NTFS Permissions vs Share Permissions
Permissions control who can do what to which file or folder in a modern file system. NTFS stands for New Technology File System, which is a new file system from the software giant Microsoft. The main difference between NTFS permissions and share permissions is the location of the person that is affected by either one. NTFS permissions apply to local users or those who has physical access to the machine. Share permissions apply only to folders and files that have been shared to the network. When accessing the shared folders from another computer, share permissions apply.
To protect the computer from unauthorized executions of applications, NTFS permissions include the option to disallow the execution of applications. This is separate to read operations and users can still read the file but not execute it. Share permissions lack the said control as executing the application would not result in it launching in the computer where it is stored. The only way to prevent the execution of applications in the shared folder is to disallow read access in the first place.
Once you have installed an operating system that uses NTFS, all files and folders have NTFS permissions, although a huge majority of the files have their permissions set to full control. Once the administrator has created new accounts on the system, it is only a matter of modifying the permissions that are already there. On a freshly installed operating system, no shares are defined and therefore no share permissions exist. Users need to share their folders first before they can define the permissions that govern the share. Even when set-up only a few folders and files are shared on the network while most are kept private.
NTFS and share permissions are very important in securing your computer and the files that are contained therein. These two work hand in hand and users do not need to choose one over the other when considering how to secure your files. Employing both permission types should allow the user greater control on who gets to do what on and off the said computer.
Summary:
NTFS permissions apply to the users who locally use the machine while share permissions apply only to users who remotely access the machine from a remote terminal
NTFS permissions can control whether the a user or a group is able to execute programs while share permissions do not
All folders have NTFS permissions while only a select few have share permissions
Showing posts with label Difference Between. Show all posts
Showing posts with label Difference Between. Show all posts
Saturday, 24 April 2010
Difference Between Hub and Switch
Hubs and Switches are two terms that are used interchangeably when referring to the network component that connects all the nodes in network. Even if most devices in existence today are switches, most people still call them hubs and get away with it. The difference between the two types of devices is the overall speed that they can broadcast data across the network. Switches are able to transmit data a lot faster compared to hubs.
Hubs are very simplistic devices that accept a single data packet then sends it out to all the computers that are connected to it. This means that only one data packet can pass through the hub at a time and all the data must wait for its turn. The overall bandwidth of the router is then shared by all the computers and that degrades the speed. This method often leads to a collision of data where a computer tries to send a packet of data to the hub while it is broadcasting. In order to detect and correct such collisions, most hubs employ added hardware that could slow down the total speed even more; an additional effect that it has is the limit on the number of elements you can have on your network.
Switches do not broadcast the data to all the computers in the network. Whenever a computer wishes to connect to another computer, the internal circuitry of the switch creates a bridge between the two; very comparable to old telephone operators who operate switchboards. This means that multiple paths can exist in the switch at the same time, making it possible for computers to send data at full speed regardless of what other network elements are doing. Collisions do not happen on switches, this lifts the speed and element limits seen on hubs.
The reason why hubs gained early prominence was the high price of switches. But today, the prices of switches have gone down significantly that there is no longer any reason to choose a hub over a switch. Because of that, hubs have become obsolete for all usual applications except for a couple of specialized niches.
Summary:
1. Bandwidth is shared among network elements causing slowdown
2. Collisions don’t happen in switches but are very common in hubs
3. The number of elements are severely limited for hubs compared to switches
4. Hubs were cheaper in the past but switch prices have come down significantly
5. Switches have replaced hubs in most modern day applications
Hubs are very simplistic devices that accept a single data packet then sends it out to all the computers that are connected to it. This means that only one data packet can pass through the hub at a time and all the data must wait for its turn. The overall bandwidth of the router is then shared by all the computers and that degrades the speed. This method often leads to a collision of data where a computer tries to send a packet of data to the hub while it is broadcasting. In order to detect and correct such collisions, most hubs employ added hardware that could slow down the total speed even more; an additional effect that it has is the limit on the number of elements you can have on your network.
Switches do not broadcast the data to all the computers in the network. Whenever a computer wishes to connect to another computer, the internal circuitry of the switch creates a bridge between the two; very comparable to old telephone operators who operate switchboards. This means that multiple paths can exist in the switch at the same time, making it possible for computers to send data at full speed regardless of what other network elements are doing. Collisions do not happen on switches, this lifts the speed and element limits seen on hubs.
The reason why hubs gained early prominence was the high price of switches. But today, the prices of switches have gone down significantly that there is no longer any reason to choose a hub over a switch. Because of that, hubs have become obsolete for all usual applications except for a couple of specialized niches.
Summary:
1. Bandwidth is shared among network elements causing slowdown
2. Collisions don’t happen in switches but are very common in hubs
3. The number of elements are severely limited for hubs compared to switches
4. Hubs were cheaper in the past but switch prices have come down significantly
5. Switches have replaced hubs in most modern day applications
Difference Between Upload and Download
Upload vs Download
Upload and download are both terms used for data transfer linked with data storage on networks particularly the Internet. You can, however, also download and upload data to a single computer unit as well from storage devices like floppy and pen drives.
When it comes to networks like the Internet, data placed on to the world wide web in portals, for exchange, viewing or storage it is called uploading. This is done from a computer linked to the Internet. On the other hand when data is retrieved from the Internet to a computer it is called downloading. Data can be retrieved from one junction on the network to another and in that case any retrieval is called downloading while disemmination is called uploading.
Uploading necessarily leads to some kind of storage with a complete file being made available for users. In case of downloading, data may be sequentially used during the process of retrival and not stored at all but in a temporary folder. This is also called streaming and is used in viewing videos and listening to songs on the Internet. Temporary downloading or streaming has been particularly useful for maintaining copyright security of entertainment multimedia material.
Downloading is receipt of data to a local system from a remote system and is accessible by only the individual computer system. Uploading is more generic and it allows access to a wider network or people simultaneously as compared to downloading.
In local networks, the differences between uploading and downloading are somewhat blurred as both the source and destination of the data can be controled by the local users. For this purpose, download as given way to the term ’sideload’ in local area networks.
Technology has advanced enough to allow both downloading and uploading from mobile devices like PDAs and cellphones. Downloading and uploading have also revolutionized the information sector, the socio-cultural sector and personal and business relationships.
Upload and download are both terms used for data transfer linked with data storage on networks particularly the Internet. You can, however, also download and upload data to a single computer unit as well from storage devices like floppy and pen drives.
When it comes to networks like the Internet, data placed on to the world wide web in portals, for exchange, viewing or storage it is called uploading. This is done from a computer linked to the Internet. On the other hand when data is retrieved from the Internet to a computer it is called downloading. Data can be retrieved from one junction on the network to another and in that case any retrieval is called downloading while disemmination is called uploading.
Uploading necessarily leads to some kind of storage with a complete file being made available for users. In case of downloading, data may be sequentially used during the process of retrival and not stored at all but in a temporary folder. This is also called streaming and is used in viewing videos and listening to songs on the Internet. Temporary downloading or streaming has been particularly useful for maintaining copyright security of entertainment multimedia material.
Downloading is receipt of data to a local system from a remote system and is accessible by only the individual computer system. Uploading is more generic and it allows access to a wider network or people simultaneously as compared to downloading.
In local networks, the differences between uploading and downloading are somewhat blurred as both the source and destination of the data can be controled by the local users. For this purpose, download as given way to the term ’sideload’ in local area networks.
Technology has advanced enough to allow both downloading and uploading from mobile devices like PDAs and cellphones. Downloading and uploading have also revolutionized the information sector, the socio-cultural sector and personal and business relationships.
Difference Between http and https
The significance of S:
Http or the hypertext transfer protocol is something we use when we access the internet. Though we seldom notice it if at all, it plays a very essential role. Http defines the methodology and rules of transporting data from the servers of the site we like to view down to our computer and vice versa. To most of us non-technical people, this should no longer be our concern just as long as we get what we asked the server for.
The problem with http though is that it is vulnerable to people who might want to eavesdrop or see what your activity is all about. This too shouldn’t really be a serious problem if all you are doing is watching stupid videos in youtube or googling your assignment. Most of our activity on the internet isn’t really that important for people to really care about. And even though it is there to see, no one who knows how to do it would actually bother to waste the time or face the possible legal implications of such acts.
The true problem arises when you are sending or receiving data that is confidential or sensitive. You sure wouldn’t want other people knowing what your personal emails contain. Private messages should stay private. Then there are on-line transactions, when you buy something and you pay for it with your credit card, your credit card number gets sent across the internet every time. And if you are using http to do this then it should be real easy for malicious people to do harm to you or your finances.
The Internet’s answer to this is https or HTTP over SSL is a secured connection that transmits data over the internet in an encrypted form. This security method means that even if someone is eavesdropping, the data they get would not be comprehensible or usable because they don’t have the means to decrypt it. The entire message is decrypted only when it arrives at its designated location.
So why don’t we shift everything to https? So that everything is secured. Although that is possible, it isn’t very advisable. Transmitting data via https require additional processing power to encrypt/decrypt the data. When you think about the servers who process millions if not billions of data in a day, that could result In massive slowdowns. That is why https is only used in certain pages that contain sensitive information like credit card numbers or passwords.
Http or the hypertext transfer protocol is something we use when we access the internet. Though we seldom notice it if at all, it plays a very essential role. Http defines the methodology and rules of transporting data from the servers of the site we like to view down to our computer and vice versa. To most of us non-technical people, this should no longer be our concern just as long as we get what we asked the server for.
The problem with http though is that it is vulnerable to people who might want to eavesdrop or see what your activity is all about. This too shouldn’t really be a serious problem if all you are doing is watching stupid videos in youtube or googling your assignment. Most of our activity on the internet isn’t really that important for people to really care about. And even though it is there to see, no one who knows how to do it would actually bother to waste the time or face the possible legal implications of such acts.
The true problem arises when you are sending or receiving data that is confidential or sensitive. You sure wouldn’t want other people knowing what your personal emails contain. Private messages should stay private. Then there are on-line transactions, when you buy something and you pay for it with your credit card, your credit card number gets sent across the internet every time. And if you are using http to do this then it should be real easy for malicious people to do harm to you or your finances.
The Internet’s answer to this is https or HTTP over SSL is a secured connection that transmits data over the internet in an encrypted form. This security method means that even if someone is eavesdropping, the data they get would not be comprehensible or usable because they don’t have the means to decrypt it. The entire message is decrypted only when it arrives at its designated location.
So why don’t we shift everything to https? So that everything is secured. Although that is possible, it isn’t very advisable. Transmitting data via https require additional processing power to encrypt/decrypt the data. When you think about the servers who process millions if not billions of data in a day, that could result In massive slowdowns. That is why https is only used in certain pages that contain sensitive information like credit card numbers or passwords.
Difference Between TCP and UDP
TCP vs UDP
The flow of traffic across the Internet is on the basis of protocols which are TCP (Transmission Control Protocol) and UDP (User Datagram Protocol).
While TCP is more popular across the Internet, the UDP cannot be rendered completely redundant. TCP allows error correction but UDP does not. In the case of UDP, there is a guarantee of the data delivery at the download or addresse point. This is made possible by ‘flow control’ which determines the requirement for resending data. Flow control also checks and stops the transmission of data unless previous packets have been successfully delivered. This is based on the process in which the client can request a resending of a particular packet from the server until the entire packet has been received as in its original form.
UDP is also common but it cannot be relied upon for sending important data like secure files, important webpages etc. It is used mostly for streaming media including audio and video. UDP is faster than TCP and media players work best with it. There is no flow control or error correction but the speed is far greater so despite streaming media not being of high quality, it can be viewed properly with UDP.
TCP is safer as compared to UDP as the latter serves as an adequate cover for viruses. TCP also has a complicated frame structure. In case of UDP, the operating system has to do very little work to translate the data.
UDP is connection less while TCP is connection-oriented which requires the latter protocal to establish full connection between the receiver and the sender. The connection needs to be closed after the transfer is complete to free up system resources that were being used by the protocol. UDP requires no authorization and is okay for free-floating dissemination of data.
The flow of traffic across the Internet is on the basis of protocols which are TCP (Transmission Control Protocol) and UDP (User Datagram Protocol).
While TCP is more popular across the Internet, the UDP cannot be rendered completely redundant. TCP allows error correction but UDP does not. In the case of UDP, there is a guarantee of the data delivery at the download or addresse point. This is made possible by ‘flow control’ which determines the requirement for resending data. Flow control also checks and stops the transmission of data unless previous packets have been successfully delivered. This is based on the process in which the client can request a resending of a particular packet from the server until the entire packet has been received as in its original form.
UDP is also common but it cannot be relied upon for sending important data like secure files, important webpages etc. It is used mostly for streaming media including audio and video. UDP is faster than TCP and media players work best with it. There is no flow control or error correction but the speed is far greater so despite streaming media not being of high quality, it can be viewed properly with UDP.
TCP is safer as compared to UDP as the latter serves as an adequate cover for viruses. TCP also has a complicated frame structure. In case of UDP, the operating system has to do very little work to translate the data.
UDP is connection less while TCP is connection-oriented which requires the latter protocal to establish full connection between the receiver and the sender. The connection needs to be closed after the transfer is complete to free up system resources that were being used by the protocol. UDP requires no authorization and is okay for free-floating dissemination of data.
Difference Between Internet Explorer and Firefox
People browse the internet on a daily basis. It has moved from being a novelty into a necessity for most people. Most office jobs nowadays require some access to the internet in order to do research, send communications, or validate inventories. The range of tasks that can be done over the internet is very wide and so is the range of tools available. Even a single task like browsing has a lot of competing software available. Two of these are Internet Explorer and Firefox.
Internet Explorer is a program developed by Microsoft to be included in every Windows operating system that is sold. It is the most widely used browser due to the fact that has been around the longest and it is included with Windows and most people do not bother with finding another one. The features of Internet Explorer are pretty basic and straightforward, and most of the time you won’t have to do anything special in order to use it aside from installing plug-ins.
Firefox is an internet browser from the software maker Mozilla. It is the primary threat to the dominance of Internet Explorer since it holds the biggest market share next to Internet Explorer. It is also preferred by most people who have tried it due to the fact that it is more stable and faster than Internet Explorer. It is also one of the first browsers to offer tabbed browsing that cleaned up the taskbar, unlike IE that opened a lot of windows and cluttered the taskbar. One great advantage that Firefox has over IE is the fact that it has an eager community behind it that creates a lot of add-ons that are compatible for Firefox. These add-ons extend the capability of Firefox and make it a lot more customizable to the user.
When you come to think of it, it all boils down to preference. If you are not bothered by the less than stellar performance of IE and you don’t want to go through installing a new browser then IE should be your best bet. It already comes preinstalled and you would only need to download patches every now and then, which IE should automatically do. But if you don’t care about the added hassle of installing a new browser and you prefer to be up to date with the most recent features then you should look into Firefox. It is updated regularly with security patches and new features which you might like.
Internet Explorer is a program developed by Microsoft to be included in every Windows operating system that is sold. It is the most widely used browser due to the fact that has been around the longest and it is included with Windows and most people do not bother with finding another one. The features of Internet Explorer are pretty basic and straightforward, and most of the time you won’t have to do anything special in order to use it aside from installing plug-ins.
Firefox is an internet browser from the software maker Mozilla. It is the primary threat to the dominance of Internet Explorer since it holds the biggest market share next to Internet Explorer. It is also preferred by most people who have tried it due to the fact that it is more stable and faster than Internet Explorer. It is also one of the first browsers to offer tabbed browsing that cleaned up the taskbar, unlike IE that opened a lot of windows and cluttered the taskbar. One great advantage that Firefox has over IE is the fact that it has an eager community behind it that creates a lot of add-ons that are compatible for Firefox. These add-ons extend the capability of Firefox and make it a lot more customizable to the user.
When you come to think of it, it all boils down to preference. If you are not bothered by the less than stellar performance of IE and you don’t want to go through installing a new browser then IE should be your best bet. It already comes preinstalled and you would only need to download patches every now and then, which IE should automatically do. But if you don’t care about the added hassle of installing a new browser and you prefer to be up to date with the most recent features then you should look into Firefox. It is updated regularly with security patches and new features which you might like.
Difference Between Adware and Spyware
Adware vs Spyware
The Internet is now the one-stop shop where people can find anything and everything that they are looking for. From providing a venue to start up their own business to connecting friends through any of the numerous social network websites found here, the Internet has definitely made things a lot more convenient for everyone.
Since many new businesses have established websites to help promote their businesses, there are now a number of software applications that are used in order to track the Internet traffic that their websites and other marketing tools are generating to determine which ones are the most effective. These are categorized into two groups: adware and spyware applications.
Adware are software applications that are designed to allow a number of pop up advertisements straight to the personal computers of potential customers and clients. These advertisements allow Internet browsers to download certain programs free of charge since these pop up advertisements contribute to the payment of the use of these programs. These are currently seen in trial programs which offer the potential customer the ability to evaluate and make his or her decision on whether to purchase the license or not. For as long as the customer does not purchase the program and is still within the trial period, the adware application will generate a variety of relevant advertisements to provide free usage of the said program without compromising the amount of profit generated by the company that developed the program. Once the customer purchases the program over the Internet, the adware software application is then disabled by the computer program and the user can now be able to utilize the computer program without the advertisements.
On the other hand, spyware software applications are programs that are embedded to certain websites in order to track the purchasing habits of existing customers. The name spyware comes from the fact that the users are not aware of these applications. While they are surfing through the website and make a purchase, the spyware gathers the purchase information and stores it in a database to allow the company to keep track of the types of the products and services that a particular client avails and the frequency of the purchases made. With the help of these applications, companies are then able to generate a number of Internet marketing strategies to directly market future products and services to these customers to further increase the amount of the profit that they generate.
The Internet is now the one-stop shop where people can find anything and everything that they are looking for. From providing a venue to start up their own business to connecting friends through any of the numerous social network websites found here, the Internet has definitely made things a lot more convenient for everyone.
Since many new businesses have established websites to help promote their businesses, there are now a number of software applications that are used in order to track the Internet traffic that their websites and other marketing tools are generating to determine which ones are the most effective. These are categorized into two groups: adware and spyware applications.
Adware are software applications that are designed to allow a number of pop up advertisements straight to the personal computers of potential customers and clients. These advertisements allow Internet browsers to download certain programs free of charge since these pop up advertisements contribute to the payment of the use of these programs. These are currently seen in trial programs which offer the potential customer the ability to evaluate and make his or her decision on whether to purchase the license or not. For as long as the customer does not purchase the program and is still within the trial period, the adware application will generate a variety of relevant advertisements to provide free usage of the said program without compromising the amount of profit generated by the company that developed the program. Once the customer purchases the program over the Internet, the adware software application is then disabled by the computer program and the user can now be able to utilize the computer program without the advertisements.
On the other hand, spyware software applications are programs that are embedded to certain websites in order to track the purchasing habits of existing customers. The name spyware comes from the fact that the users are not aware of these applications. While they are surfing through the website and make a purchase, the spyware gathers the purchase information and stores it in a database to allow the company to keep track of the types of the products and services that a particular client avails and the frequency of the purchases made. With the help of these applications, companies are then able to generate a number of Internet marketing strategies to directly market future products and services to these customers to further increase the amount of the profit that they generate.
Difference Between Gateway and Router
Connecting to the internet requires a few steps that are totally hidden from the user. There are two things that your computer must know in order to contact the server hosting the files. One is the DNS server which would resolve the domain name into the equivalent IP address, the second is the gateway or the point in your network that is connected to the internet. Commonly, a network gateway is a role that is fulfilled by your router. A router is a device that controls the flow of data from one network to another; or in most cases, from a local network to the internet.
The function of a gateway can be performed by hardware, as in the case of routers, or software. An example of a software gateway is when you use Internet Connection Sharing (ICS) in Windows in order to share your internet connection to multiple computers without the use of a router. The computer that is connected to the internet acts as a gateway and all communications are sent through that computer. A gateway doesn’t only relay information across networks, it also performs the conversion of protocols along the 7 layers of the OSI model. It is also responsible for Network Access Translation or NAT in order to deliver the packets to its destination.
All the functionalities of a gateway have been built into routers for a considerable period of time. Advances in microchip technologies have increased enough that all the algorithms required to have a fully functional gateway can be placed into a few microchips that is then included into most routers. A common modern router has the basic features of a router, a wireless base station, a gateway, and a switch all rolled into one device that is about the size of a book. The prices of routers for sale in the market differ with the features that it has. Some routers have advanced gateway features and cost more while some don’t have it and cost less. It would just depend on the user on which one suits his needs.
Routers present a quick and easy to implement an internet gateway, regardless of what its extra features are. But for those people whose networks carry a lot of traffic, most routers cannot cope with the amount of data that flows through it. Other options would be to install a router OS into a computer and let it act as the router and gateway. Using this method allows the administrator a lot more freedom and flexibility in configuring his router and gateway.
The function of a gateway can be performed by hardware, as in the case of routers, or software. An example of a software gateway is when you use Internet Connection Sharing (ICS) in Windows in order to share your internet connection to multiple computers without the use of a router. The computer that is connected to the internet acts as a gateway and all communications are sent through that computer. A gateway doesn’t only relay information across networks, it also performs the conversion of protocols along the 7 layers of the OSI model. It is also responsible for Network Access Translation or NAT in order to deliver the packets to its destination.
All the functionalities of a gateway have been built into routers for a considerable period of time. Advances in microchip technologies have increased enough that all the algorithms required to have a fully functional gateway can be placed into a few microchips that is then included into most routers. A common modern router has the basic features of a router, a wireless base station, a gateway, and a switch all rolled into one device that is about the size of a book. The prices of routers for sale in the market differ with the features that it has. Some routers have advanced gateway features and cost more while some don’t have it and cost less. It would just depend on the user on which one suits his needs.
Routers present a quick and easy to implement an internet gateway, regardless of what its extra features are. But for those people whose networks carry a lot of traffic, most routers cannot cope with the amount of data that flows through it. Other options would be to install a router OS into a computer and let it act as the router and gateway. Using this method allows the administrator a lot more freedom and flexibility in configuring his router and gateway.
Difference Between Dynamic and Static IP
A dynamic IP is one that changes every time you connect to the network and a static IP is one that remains the same no matter how many times you connect and disconnect from the network. Whether you have a static or dynamic IP address is up to the administrator of the said network.
A dynamic IP changes every time you connect to the network; this is a method of freeing up IP addresses when the number of clients that connect the network is greater than what it can usually handle. This can be seen in wireless access points where there could be a great number of users but not at the same time. The control and distribution of dynamic addresses is often handled by a DHCP (Dynamic Host Configuration Protocol) server which keeps track of which addresses are free and which ones are being used. Even though a DHCP server is meant for sending out dynamic IP addresses, it can also be used to assign static ones.
A static IP address can be acquired via DHCP when the administrator knows the MAC address of your network card is and assign a specific IP address to that. After that, you would get that specific IP address every time you connect and it is reserved for you only and nobody can use it. Another method of setting a static IP is to manually set it on your network card. You just have to be careful not to assign the same IP address to two or more computers or assign an IP address that is included in the DHCP pool.
There is also an advantage when having a static IP address when connected to the Internet. When running your own server, a static IP address would mean that you only need to have the DNS point to your IP address and you are done. With dynamic IP addresses, you would need to utilize a dynamic DNS service that you can update with your new IP address every time you connect.
Although having a static IP address has some advantages of its own, it is not necessary for the usual everyday use at home or in the office. Having a dynamic IP address in these cases is not a cause for concern and should just be left as it is. But for those who do need to have a static IP address, you might try asking your ISP if they can provide you with one for a fee.
A dynamic IP changes every time you connect to the network; this is a method of freeing up IP addresses when the number of clients that connect the network is greater than what it can usually handle. This can be seen in wireless access points where there could be a great number of users but not at the same time. The control and distribution of dynamic addresses is often handled by a DHCP (Dynamic Host Configuration Protocol) server which keeps track of which addresses are free and which ones are being used. Even though a DHCP server is meant for sending out dynamic IP addresses, it can also be used to assign static ones.
A static IP address can be acquired via DHCP when the administrator knows the MAC address of your network card is and assign a specific IP address to that. After that, you would get that specific IP address every time you connect and it is reserved for you only and nobody can use it. Another method of setting a static IP is to manually set it on your network card. You just have to be careful not to assign the same IP address to two or more computers or assign an IP address that is included in the DHCP pool.
There is also an advantage when having a static IP address when connected to the Internet. When running your own server, a static IP address would mean that you only need to have the DNS point to your IP address and you are done. With dynamic IP addresses, you would need to utilize a dynamic DNS service that you can update with your new IP address every time you connect.
Although having a static IP address has some advantages of its own, it is not necessary for the usual everyday use at home or in the office. Having a dynamic IP address in these cases is not a cause for concern and should just be left as it is. But for those who do need to have a static IP address, you might try asking your ISP if they can provide you with one for a fee.
Difference Between IIS and Tomcat
IIS vs Tomcat
Deploying an internet server isn’t a one step deal. You would need to install a couple of servers that handle different aspects of a web server. The first one that you would need to install is the HTTP server. IIS (Internet Information Services) is a web server developed by Microsoft and a good choice for most people who are already comfortable with using Windows. Tomcat is another server, but it isn’t meant to process HTML documents, it is intended to run Java and JSP applications. The tomcat was developed by Apache as a Java/JSP server. It is developed primarily to communicate with Apache’s own web server but it is also compatible with IIS or any other web server available.
IIS was developed by Microsoft for use in its NT OS that is intended for mainframes and web servers. It is currently considered as the second most popular web server in use today; second only to Apache. Despite being behind in standings, Microsoft has been gradually developing IIS along with its companion programs SQL Server and Silverlight which are both from Microsoft. These programs along with Microsoft’s .Net Framework and the familiarity of most people to the Windows operating system makes IIS a very compelling web server choice. But in order to run Java and JSP programs on their server, users would need to install server program from its competitor; the Tomcat.
Tomcat was the name given to the open source Java/JSP server that was developed by Apache to work in tandem with their own web server. Tomcat is undoubtedly the best in what it does partly because its only competition, JRun, has been problematic to most users. It is also very popular with most developers due to the simple fact that it is free and there is a lot of support from the open source community.
Choosing a web server for your own site is usually up to the user. Although it is better for most users to stick to a single source of programs to ensure that they work together flawlessly, it is sometimes necessary to cross into the competing software provider for support with certain languages. This is the case with IIS and Tomcat. Most users of IIS choose to use it because they are already accustomed to the Windows environment and they prefer to have the proper customer support that a large company can provide. But Tomcat is the only program that can easily and reliably execute JSP and Java applications, leaving the user no option. It might be a little bit trickier to implement due to minor glitches, but IIS and Tomcat can work together.
Deploying an internet server isn’t a one step deal. You would need to install a couple of servers that handle different aspects of a web server. The first one that you would need to install is the HTTP server. IIS (Internet Information Services) is a web server developed by Microsoft and a good choice for most people who are already comfortable with using Windows. Tomcat is another server, but it isn’t meant to process HTML documents, it is intended to run Java and JSP applications. The tomcat was developed by Apache as a Java/JSP server. It is developed primarily to communicate with Apache’s own web server but it is also compatible with IIS or any other web server available.
IIS was developed by Microsoft for use in its NT OS that is intended for mainframes and web servers. It is currently considered as the second most popular web server in use today; second only to Apache. Despite being behind in standings, Microsoft has been gradually developing IIS along with its companion programs SQL Server and Silverlight which are both from Microsoft. These programs along with Microsoft’s .Net Framework and the familiarity of most people to the Windows operating system makes IIS a very compelling web server choice. But in order to run Java and JSP programs on their server, users would need to install server program from its competitor; the Tomcat.
Tomcat was the name given to the open source Java/JSP server that was developed by Apache to work in tandem with their own web server. Tomcat is undoubtedly the best in what it does partly because its only competition, JRun, has been problematic to most users. It is also very popular with most developers due to the simple fact that it is free and there is a lot of support from the open source community.
Choosing a web server for your own site is usually up to the user. Although it is better for most users to stick to a single source of programs to ensure that they work together flawlessly, it is sometimes necessary to cross into the competing software provider for support with certain languages. This is the case with IIS and Tomcat. Most users of IIS choose to use it because they are already accustomed to the Windows environment and they prefer to have the proper customer support that a large company can provide. But Tomcat is the only program that can easily and reliably execute JSP and Java applications, leaving the user no option. It might be a little bit trickier to implement due to minor glitches, but IIS and Tomcat can work together.
Difference Between LAN and WAN
LAN vs WAN
Local area networks and wide area networks are essentially the same in many aspects. They only differ in the area that is covered by the network. LANs are networks that are limited to a small geographic location. The computers connected to the network could be in a single room, a few rooms, or spread out in an entire building. WANs, on the other hand, cover great distances and are not limited to a single location. The biggest and most popular example of a WAN is the internet, which spans the whole globe and has millions of computers connected to it.
LANs are very common nowadays, it is commonplace in a work environment and even at home. It is necessary to implement a local area network in order to connect multiple computers to the internet using a single DSL line. With regards to speed, LAN usually operates at much higher rates compared to WAN. This is largely due to the proximity of the computers and the lack of congestion in most cases. It is common to experience up to 80 or 90 mbps in a LAN while achieving 10 to 20mbps is already a great achievement for WAN.
Security wise, LAN can be more secure due to the fact that all the computers are within a specific area and are physically easier to secure. The data on a wide area network needs to pass across public phone lines in order to reach its intended destination. The data is then vulnerable to attack by anyone with the right skills to penetrate your network. Unlike LAN, there is just no physical way of securing it, which is why electronic features are the only defense structure in place.
Cost also varies greatly between the two. Deploying a LAN is relatively much easier and cheaper than a WAN. It wouldn’t require more than the cables, some switches, and optionally, routers to those who want to connect to the internet. With WAN, the long distances that the data travels would need miles and miles of cabling, or in some cases satellites. Signal deterioration is also a very real problem for WANs, that’s why repeaters are used at intervals to amplify or rebuild the original signal.
Summary:
1. LAN covers a small area while WAN covers a significantly larger area.
2. LAN speeds are also significantly faster than WAN.
3. LAN is more secure than WAN.
4. WAN is much more expensive to implement than LAN.
Local area networks and wide area networks are essentially the same in many aspects. They only differ in the area that is covered by the network. LANs are networks that are limited to a small geographic location. The computers connected to the network could be in a single room, a few rooms, or spread out in an entire building. WANs, on the other hand, cover great distances and are not limited to a single location. The biggest and most popular example of a WAN is the internet, which spans the whole globe and has millions of computers connected to it.
LANs are very common nowadays, it is commonplace in a work environment and even at home. It is necessary to implement a local area network in order to connect multiple computers to the internet using a single DSL line. With regards to speed, LAN usually operates at much higher rates compared to WAN. This is largely due to the proximity of the computers and the lack of congestion in most cases. It is common to experience up to 80 or 90 mbps in a LAN while achieving 10 to 20mbps is already a great achievement for WAN.
Security wise, LAN can be more secure due to the fact that all the computers are within a specific area and are physically easier to secure. The data on a wide area network needs to pass across public phone lines in order to reach its intended destination. The data is then vulnerable to attack by anyone with the right skills to penetrate your network. Unlike LAN, there is just no physical way of securing it, which is why electronic features are the only defense structure in place.
Cost also varies greatly between the two. Deploying a LAN is relatively much easier and cheaper than a WAN. It wouldn’t require more than the cables, some switches, and optionally, routers to those who want to connect to the internet. With WAN, the long distances that the data travels would need miles and miles of cabling, or in some cases satellites. Signal deterioration is also a very real problem for WANs, that’s why repeaters are used at intervals to amplify or rebuild the original signal.
Summary:
1. LAN covers a small area while WAN covers a significantly larger area.
2. LAN speeds are also significantly faster than WAN.
3. LAN is more secure than WAN.
4. WAN is much more expensive to implement than LAN.
Difference Between HTTP and WWW
HTTP vs WWW
HTTP is an acronym for Hypertext Transfer Protocol; this is the most popular protocol in use today. It is the communication standard used by your web browser in order to communicate with the server of the website that you are viewing. WWW or the World Wide Web is a prefix to a certain name in order to identify that it is a web site that you are visiting.
There are many existing protocols in the internet today and in order to differentiate which one you want to use, they are given specific protocol names that should be present when connecting to a web site or any other source of data. Some protocols that are accepted by browsers are: HTTP, HTTPS, FTP, NEWS, and FILE. Although most sites are purely web servers, some sites host multiple services in a single domain name and in order to identify which one you are trying to access you must indicate the protocol that the service uses. You can see what protocol is currently in use by looking at the first word in the address bar.
Most websites come in a certain format, mostly it is www.anything.com. The word at the end identifies the site as commercial, the word in the middle is the domain name, and the WWW in the beginning indicates that it is a website and it uses the HTTP protocol. It is therefore redundant to have “http://www.anything.com” since the WWW tells the browser to use HTTP when it is already in use. But because most people are already used to having a URI written this way, it is left as is by most experts.
Aside from the protocol names that are already reserved for obvious reasons, you can use any other prefix in order to establish a sub domain on your site. A sub domain can be a totally different web site that is sharing the domain name. In the case of sub domains, you can no longer use a prefix in order to identify the protocol in use, that is why you must specify the protocol by using HTTP://, FTP://, or any other protocol name.
Summary:
1. HTTP is the protocol used to transfer data to and from the website.
2. WWW is the identifier that indicates that it is a web site and it uses the HTTP protocol.
3. HTTP://anything.com, WWW.anything.com, HTTP://WWW.anything.com leads to the same site.
4. Any prefix that is not reserved to a protocol can be used as a sub domain.
HTTP is an acronym for Hypertext Transfer Protocol; this is the most popular protocol in use today. It is the communication standard used by your web browser in order to communicate with the server of the website that you are viewing. WWW or the World Wide Web is a prefix to a certain name in order to identify that it is a web site that you are visiting.
There are many existing protocols in the internet today and in order to differentiate which one you want to use, they are given specific protocol names that should be present when connecting to a web site or any other source of data. Some protocols that are accepted by browsers are: HTTP, HTTPS, FTP, NEWS, and FILE. Although most sites are purely web servers, some sites host multiple services in a single domain name and in order to identify which one you are trying to access you must indicate the protocol that the service uses. You can see what protocol is currently in use by looking at the first word in the address bar.
Most websites come in a certain format, mostly it is www.anything.com. The word at the end identifies the site as commercial, the word in the middle is the domain name, and the WWW in the beginning indicates that it is a website and it uses the HTTP protocol. It is therefore redundant to have “http://www.anything.com” since the WWW tells the browser to use HTTP when it is already in use. But because most people are already used to having a URI written this way, it is left as is by most experts.
Aside from the protocol names that are already reserved for obvious reasons, you can use any other prefix in order to establish a sub domain on your site. A sub domain can be a totally different web site that is sharing the domain name. In the case of sub domains, you can no longer use a prefix in order to identify the protocol in use, that is why you must specify the protocol by using HTTP://, FTP://, or any other protocol name.
Summary:
1. HTTP is the protocol used to transfer data to and from the website.
2. WWW is the identifier that indicates that it is a web site and it uses the HTTP protocol.
3. HTTP://anything.com, WWW.anything.com, HTTP://WWW.anything.com leads to the same site.
4. Any prefix that is not reserved to a protocol can be used as a sub domain.
Difference Between FTP and HTTP
FTP vs HTTP
HTTP (Hypertext Transfer Protocol) and FTP (File Transfer Protocol) are only two of the multitude of protocols that are being used in the internet, each with its own function. The purpose of HTTP is to serve as a means of accessing the world wide web. Websites are accessed using http with the help of browsers. FTP, as the name implies, is used in transferring files from one computer to another. It is a less popular protocol due to small number of people who actually use FTP, and even fewer people who know that they are using it.
Most people don’t actually know it, but the HTTP protocol is in use every time we open a site, check our email, or update our blogs. This can be easily checked by looking at the address bar and looking at the very first few letters; chances are its HTTP. The great majority of people who use the FTP protocol are the people who maintain and routinely upload files to websites. FTP provides an easy and hassle free method of site maintenance.
FTP is also a good option for people who want to download files. There are FTP servers who host files and allow people to anonymously login to their site and download huge files. But downloading isn’t a capability that is purely held by FTP, it can also be done with HTTP. The rise in popularity of downloads in HTTP is due largely to its linkage with the world wide web. Most sites that offer content for downloads have their files hosted in an HTTP server so that visitors can easily browse and select their files.
FTP is already old and most of the newer users are beginning to adapt other protocols as a replacement like gopher. It would only be a matter of time before FTP becomes totally obsolete. HTTP, on the other hand, is still going strong and would remain as the dominant internet protocol for years to come. There are multiple languages that are being developed for use with and to improve the HTTP protocol.
Summary:
1. HTTP is used to view websites while FTP is used to access and transfer files.
2. The common HTTP client is the browser while FTP can be accessed via the command line or a graphical client of its own.
3. Most people use HTTP while only a few use FTP, mostly people who maintain websites.
4. Downloading files can either be via HTTP or FTP.
5. FTP is slowly being replaced by other protocols while HTTP will remain for the foreseeable future.
HTTP (Hypertext Transfer Protocol) and FTP (File Transfer Protocol) are only two of the multitude of protocols that are being used in the internet, each with its own function. The purpose of HTTP is to serve as a means of accessing the world wide web. Websites are accessed using http with the help of browsers. FTP, as the name implies, is used in transferring files from one computer to another. It is a less popular protocol due to small number of people who actually use FTP, and even fewer people who know that they are using it.
Most people don’t actually know it, but the HTTP protocol is in use every time we open a site, check our email, or update our blogs. This can be easily checked by looking at the address bar and looking at the very first few letters; chances are its HTTP. The great majority of people who use the FTP protocol are the people who maintain and routinely upload files to websites. FTP provides an easy and hassle free method of site maintenance.
FTP is also a good option for people who want to download files. There are FTP servers who host files and allow people to anonymously login to their site and download huge files. But downloading isn’t a capability that is purely held by FTP, it can also be done with HTTP. The rise in popularity of downloads in HTTP is due largely to its linkage with the world wide web. Most sites that offer content for downloads have their files hosted in an HTTP server so that visitors can easily browse and select their files.
FTP is already old and most of the newer users are beginning to adapt other protocols as a replacement like gopher. It would only be a matter of time before FTP becomes totally obsolete. HTTP, on the other hand, is still going strong and would remain as the dominant internet protocol for years to come. There are multiple languages that are being developed for use with and to improve the HTTP protocol.
Summary:
1. HTTP is used to view websites while FTP is used to access and transfer files.
2. The common HTTP client is the browser while FTP can be accessed via the command line or a graphical client of its own.
3. Most people use HTTP while only a few use FTP, mostly people who maintain websites.
4. Downloading files can either be via HTTP or FTP.
5. FTP is slowly being replaced by other protocols while HTTP will remain for the foreseeable future.
Difference Between WLAN and WiMax
WLAN vs WiMax
Wireless Local Area Network, also known as WLAN or Wi-Fi, is the alternative to cabled LAN. It provides users mobility to move from one location to another without thinking about the wires. It has grown in popularity along with the rise of laptop computers and low cost netbooks that made mobile computing within reach for most people. WiMax stands for Worldwide interoperabiliy for Microwave Access and it provides high speed internet access to areas the WLAN cannot reach.
WiMax is a new technology that is still not very popular but is gaining widespread attention due to the niche it serves. WiMax equipment provides services that are in between high speed, low range WLAN and low speed, high range 3G and 2G technologies.
WLAN can provide high speeds since its hardware is not meant to transmit or receive signals from far away and it does not have to deal with the substantial attenuation that comes with long distances. The 50km range of WiMax and its superior ability to pass through obstructions makes it ideal for certain applications as a last mile connectivity replacement to cables for DSL lines. The speed that can be achieved with WiMax isn’t constant though, it is conversely proportional to the distance between the base station and the subscriber.
The two technologies also differ in the type of Media Access Controller or MAC that they utilize. Wi-Fi uses one that is contention based. This means that all clients who use the same access point are competing for bandwidth with the closest user getting the highest priority. WiMax uses a MAC with a scheduling algorithm that ensures each client gets assigned a certain time span to communicate with the access point. The time span allocated to each client can be reduced or expanded depending on the needs of the client but it cannot be used by other clients as long as he remain connected.
Regardless of the improvements of WiMax to ensure that the bandwidth isn’t taken over by a single abusive user, it can still suffer from slowdowns due the number of connected users just like Wi-Fi. The only solution to this problem would be to add more radio cards to accommodate all users.
Summary:
1. WLAN is meant for short range applications while WiMax is meant for long range applications.
2. WLAN can deliver much faster speeds compared to WiMax.
3. WiMax provides a much better method of bandwidth distribution compared to WLAN.
4. Both technologies are still susceptible to overloading.
Wireless Local Area Network, also known as WLAN or Wi-Fi, is the alternative to cabled LAN. It provides users mobility to move from one location to another without thinking about the wires. It has grown in popularity along with the rise of laptop computers and low cost netbooks that made mobile computing within reach for most people. WiMax stands for Worldwide interoperabiliy for Microwave Access and it provides high speed internet access to areas the WLAN cannot reach.
WiMax is a new technology that is still not very popular but is gaining widespread attention due to the niche it serves. WiMax equipment provides services that are in between high speed, low range WLAN and low speed, high range 3G and 2G technologies.
WLAN can provide high speeds since its hardware is not meant to transmit or receive signals from far away and it does not have to deal with the substantial attenuation that comes with long distances. The 50km range of WiMax and its superior ability to pass through obstructions makes it ideal for certain applications as a last mile connectivity replacement to cables for DSL lines. The speed that can be achieved with WiMax isn’t constant though, it is conversely proportional to the distance between the base station and the subscriber.
The two technologies also differ in the type of Media Access Controller or MAC that they utilize. Wi-Fi uses one that is contention based. This means that all clients who use the same access point are competing for bandwidth with the closest user getting the highest priority. WiMax uses a MAC with a scheduling algorithm that ensures each client gets assigned a certain time span to communicate with the access point. The time span allocated to each client can be reduced or expanded depending on the needs of the client but it cannot be used by other clients as long as he remain connected.
Regardless of the improvements of WiMax to ensure that the bandwidth isn’t taken over by a single abusive user, it can still suffer from slowdowns due the number of connected users just like Wi-Fi. The only solution to this problem would be to add more radio cards to accommodate all users.
Summary:
1. WLAN is meant for short range applications while WiMax is meant for long range applications.
2. WLAN can deliver much faster speeds compared to WiMax.
3. WiMax provides a much better method of bandwidth distribution compared to WLAN.
4. Both technologies are still susceptible to overloading.
Difference Between RSS and ATOM
RSS vs ATOM
Really Simple Syndication or RSS has been the standard for web feeds for a considerable time. Web feeds contains either a summary or the full text content of a web page. The problem with RSS is the often confusing and non standard conventions used by RSS due in part to its scattered development. The advent of the ATOM syndication standard was a response to the design flaws of the RSS standard. The primary advantage of the ATOM is its adaptation as the IETF standard.
Being an IETF standard, the ATOM needed to implement certain features that made the format easier to deal with. Each atom feed contains an explicit declaration of the format of the content along with what language is used. RSS feeds do not declare its content, but since it only contains plain text or escaped HTML, it is rather easy for the browser to distinguish which is which.
A major flaw of RSS is in its code. RSS code isn’t really very usable in other XML vocabularies since it wasn’t really intended to do so at the very beginning. ATOM code has been built from the ground with modularity in mind. Therefore, a great majority of its code is reusable even with other XML vocabularies like RSS.
Being the first syndication standard has been the primary factor in the rapid growth and popularity of RSS. RSS has been the preferred format for most people even to those who already know about the ATOM format. Podcasting was also derived from the RSS format when it added enclosure support in the 2.0 version. Even though ATOM has also been adapted to serve in podcasting, RSS still holds a great amount of this market. Most web sites, though not all, that offer web syndication only offers it in the RSS format, hampering the further advancement of the ATOM format. Supporters of the ATOM format also needs to add support for RSS so that those who only have RSS support can also see the content, which is still the great majority of people who subscribe to web feeds.
Summary:
1. ATOM is an IETF standard while RSS is not
2. ATOM feeds explicitly indicates the content while the browser is left to figure out whether the RSS feed contains plain text or escaped HTML
3. ATOM code is modular and reusable while RSS code is not
4. RSS still holds dominance in the syndication format due to its head start and popularity
Really Simple Syndication or RSS has been the standard for web feeds for a considerable time. Web feeds contains either a summary or the full text content of a web page. The problem with RSS is the often confusing and non standard conventions used by RSS due in part to its scattered development. The advent of the ATOM syndication standard was a response to the design flaws of the RSS standard. The primary advantage of the ATOM is its adaptation as the IETF standard.
Being an IETF standard, the ATOM needed to implement certain features that made the format easier to deal with. Each atom feed contains an explicit declaration of the format of the content along with what language is used. RSS feeds do not declare its content, but since it only contains plain text or escaped HTML, it is rather easy for the browser to distinguish which is which.
A major flaw of RSS is in its code. RSS code isn’t really very usable in other XML vocabularies since it wasn’t really intended to do so at the very beginning. ATOM code has been built from the ground with modularity in mind. Therefore, a great majority of its code is reusable even with other XML vocabularies like RSS.
Being the first syndication standard has been the primary factor in the rapid growth and popularity of RSS. RSS has been the preferred format for most people even to those who already know about the ATOM format. Podcasting was also derived from the RSS format when it added enclosure support in the 2.0 version. Even though ATOM has also been adapted to serve in podcasting, RSS still holds a great amount of this market. Most web sites, though not all, that offer web syndication only offers it in the RSS format, hampering the further advancement of the ATOM format. Supporters of the ATOM format also needs to add support for RSS so that those who only have RSS support can also see the content, which is still the great majority of people who subscribe to web feeds.
Summary:
1. ATOM is an IETF standard while RSS is not
2. ATOM feeds explicitly indicates the content while the browser is left to figure out whether the RSS feed contains plain text or escaped HTML
3. ATOM code is modular and reusable while RSS code is not
4. RSS still holds dominance in the syndication format due to its head start and popularity
Difference Between Broadband and DSL
Broadband vs DSL
In order to enjoy the amenities that are provided by the internet, users need a data link to connect; the faster the better. For an extended period of time, the world used dial-up connections via the widespread telephone system. This was very slow at a theoretical maximum of only 56kbps and a lot of people experimented on some solutions to solve this bottleneck. Broadband is the term used to refer to any technology that provided substantially faster connection speeds compared to dial-up. Direct Subscriber line, commonly known as DSL, is one of these technologies and it is one of the most popular technologies used in homes.
Broadband has opened up the internet to more than simple data. It allowed people to use the internet for listening to music, watching videos, and even sharing photos and other files. Peer to peer networks also started to appear after higher data speeds made it more feasible.
DSL is not the only technology that is capable of providing high speed access. There is ISDN, satellite internet, cellular broadband, and power-line internet to name a few. Each of these technologies has their own advantages and disadvantages that make them better for one application but not for another. DSL is widely preferred by a lot of homes and phone companies because they use the same infrastructure as standard telephone lines. It is easier for telephone companies because they don’t have to lay new lines. All it takes on the subscriber’s end is a line splitter/filter that separates the frequencies used for voice and the frequency used for data, and DSL modem. It also requires a lot less expense in terms of hardware compared to wireless technologies like cellular and satellite.
The definition of broadband has been evolving for as long as its existence. As of 2009, the FCC defines broadband as any internet technology that exceeds 768kbps. This excludes a lot of what we traditionally know as broadband. DSL has kept pace with the evolution of broadband internet and higher speeds are quite possible, as long as the provider is capable. Speeds of over 1mbps is quite commonplace and is even insufficient for a lot of users.
Summary:
1. Broadband is the umbrella terminology used for high speed internet access while DSL is only one of these technologies
2. There are other broadband technologies in use aside from DSL
3. DSL is advantageous compared to other broadband technologies as it can integrate to existing telephone systems
In order to enjoy the amenities that are provided by the internet, users need a data link to connect; the faster the better. For an extended period of time, the world used dial-up connections via the widespread telephone system. This was very slow at a theoretical maximum of only 56kbps and a lot of people experimented on some solutions to solve this bottleneck. Broadband is the term used to refer to any technology that provided substantially faster connection speeds compared to dial-up. Direct Subscriber line, commonly known as DSL, is one of these technologies and it is one of the most popular technologies used in homes.
Broadband has opened up the internet to more than simple data. It allowed people to use the internet for listening to music, watching videos, and even sharing photos and other files. Peer to peer networks also started to appear after higher data speeds made it more feasible.
DSL is not the only technology that is capable of providing high speed access. There is ISDN, satellite internet, cellular broadband, and power-line internet to name a few. Each of these technologies has their own advantages and disadvantages that make them better for one application but not for another. DSL is widely preferred by a lot of homes and phone companies because they use the same infrastructure as standard telephone lines. It is easier for telephone companies because they don’t have to lay new lines. All it takes on the subscriber’s end is a line splitter/filter that separates the frequencies used for voice and the frequency used for data, and DSL modem. It also requires a lot less expense in terms of hardware compared to wireless technologies like cellular and satellite.
The definition of broadband has been evolving for as long as its existence. As of 2009, the FCC defines broadband as any internet technology that exceeds 768kbps. This excludes a lot of what we traditionally know as broadband. DSL has kept pace with the evolution of broadband internet and higher speeds are quite possible, as long as the provider is capable. Speeds of over 1mbps is quite commonplace and is even insufficient for a lot of users.
Summary:
1. Broadband is the umbrella terminology used for high speed internet access while DSL is only one of these technologies
2. There are other broadband technologies in use aside from DSL
3. DSL is advantageous compared to other broadband technologies as it can integrate to existing telephone systems
Difference Between MAC and IP Address
MAC vs IP Address
MAC (Media Access Control) and IP (Internet Protocol) are the two addresses that identifies your computer in a network. It is usually used to track data packets to ensure that they get to where it was intended. An IP address is usually assigned by the network administrator or internet service provider, you are either provided a static one at the beginning or given a dynamic one every time you connect to the network. This is not true with MAC addresses as it is already embedded on the device or the network card during manufacturing. It is supposed to be permanent and could not be changed by anyone as it was meant to identify a specific network interface card no matter where it is in the world.
Experienced IT people can deduce from an IP address to which network that computer is connected to and consequently its approximate location. Certain addresses should only be from certain regions or countries and are thus a little bit easier to track. With a MAC address, this is not possible as the address itself does not contain information that lets you identify its location. For this reason, it is more comparable to a name than an address.
One of the uses of a MAC address which people are most likely to encounter is in MAC filtering, used by wireless routers to allow or disallow certain computer from accessing the network. This is a quick and easy method if you only want a handful of computers or laptops to connect. A MAC address can also be used to assign an IP address to a certain computer. The server queries the MAC address of the network card, looks it up in a list, and assigns the corresponding IP address,
Despite all the security measures put in place. MAC and IP address spoofing is still easy for those who knows how to do it. It is therefore still possible to gain access to a WiFI network by monitoring it and intercepting the MAC address of an authorized computer. IP address spoofing is also possible, a common practice for people who do not want to be found.
Summary:
1. MAC address is supposedly unique to each network interface card while an IP address is usually replaced
2. An IP address reveals which element on which network it is while the same cannot be extracted from a MAC address
3. MAC is one of the security methods in WiFi
4. Both IP and MAC addresses can still be spoofed or copied.
MAC (Media Access Control) and IP (Internet Protocol) are the two addresses that identifies your computer in a network. It is usually used to track data packets to ensure that they get to where it was intended. An IP address is usually assigned by the network administrator or internet service provider, you are either provided a static one at the beginning or given a dynamic one every time you connect to the network. This is not true with MAC addresses as it is already embedded on the device or the network card during manufacturing. It is supposed to be permanent and could not be changed by anyone as it was meant to identify a specific network interface card no matter where it is in the world.
Experienced IT people can deduce from an IP address to which network that computer is connected to and consequently its approximate location. Certain addresses should only be from certain regions or countries and are thus a little bit easier to track. With a MAC address, this is not possible as the address itself does not contain information that lets you identify its location. For this reason, it is more comparable to a name than an address.
One of the uses of a MAC address which people are most likely to encounter is in MAC filtering, used by wireless routers to allow or disallow certain computer from accessing the network. This is a quick and easy method if you only want a handful of computers or laptops to connect. A MAC address can also be used to assign an IP address to a certain computer. The server queries the MAC address of the network card, looks it up in a list, and assigns the corresponding IP address,
Despite all the security measures put in place. MAC and IP address spoofing is still easy for those who knows how to do it. It is therefore still possible to gain access to a WiFI network by monitoring it and intercepting the MAC address of an authorized computer. IP address spoofing is also possible, a common practice for people who do not want to be found.
Summary:
1. MAC address is supposedly unique to each network interface card while an IP address is usually replaced
2. An IP address reveals which element on which network it is while the same cannot be extracted from a MAC address
3. MAC is one of the security methods in WiFi
4. Both IP and MAC addresses can still be spoofed or copied.
Difference Between Blog and Website
A website is a group of pages that are placed in a server meant to deliver or gather information. It is organized in such a manner that you can navigate from one page to another with the links that are provided. There are many types of websites that exist. There are websites for selling products, for providing after sales support, and there are even websites that operate just on information. A blog is a type of website that is maintained solely to provide information to people. It is just one subcategory of websites that can be built. A blog is an informal media for sharing news, information, views, and ideas about a niche topic. It doesn’t have to be as formal as a book, or even as a newspaper article. Sometimes, an eclectic collection of information on a given subject is the best way to go. Usually the posts in the blog is in reverse chronological order.
A blog can be built on a variety of topics available; there are blogs about current events, fashion, religion, and so much more. The proliferation of blogs is due in part to the simplicity in creating one. You wouldn’t need to have in depth skills in making your own webpage just as long as you can follow the basic format that some of the CMS for blogging offers. There are even preloaded themes that can take care of the majority of the tasks you need to do in setting up a blog. The only real job that bloggers need to take care of is the content that they input. It should be attention grabbing in order to entice a great number of readers. And the blogger should maintain the quality of his content so that the readers would keep coming back.
Building a website could be as easy or as difficult as you would want it to be. You could stick to static html pages that offer the barest of essentials or go all out with dynamic and interactive pages that employ multiple technologies like PHP, AJAX, Java, and many more. Having a website could be a lot more difficult since you don’t have the templates that are provided to you in blogs, you would need to build the necessary structure and links that would lead to your various pages. But building a website provides you with a great amount of flexibility than with blogs.
If you want to create something that would fit in a blog format and you don’t really want to delve into the inner workings of website building then blogging is the best option for you. It is hassle free and you could get started in as short as a day. But if you want to build a website that would require adding a lot of content, menus, and other navigation aids, then you would need to create your own website because that is beyond a blogs capabilities.
A blog can be built on a variety of topics available; there are blogs about current events, fashion, religion, and so much more. The proliferation of blogs is due in part to the simplicity in creating one. You wouldn’t need to have in depth skills in making your own webpage just as long as you can follow the basic format that some of the CMS for blogging offers. There are even preloaded themes that can take care of the majority of the tasks you need to do in setting up a blog. The only real job that bloggers need to take care of is the content that they input. It should be attention grabbing in order to entice a great number of readers. And the blogger should maintain the quality of his content so that the readers would keep coming back.
Building a website could be as easy or as difficult as you would want it to be. You could stick to static html pages that offer the barest of essentials or go all out with dynamic and interactive pages that employ multiple technologies like PHP, AJAX, Java, and many more. Having a website could be a lot more difficult since you don’t have the templates that are provided to you in blogs, you would need to build the necessary structure and links that would lead to your various pages. But building a website provides you with a great amount of flexibility than with blogs.
If you want to create something that would fit in a blog format and you don’t really want to delve into the inner workings of website building then blogging is the best option for you. It is hassle free and you could get started in as short as a day. But if you want to build a website that would require adding a lot of content, menus, and other navigation aids, then you would need to create your own website because that is beyond a blogs capabilities.
Difference Between DSL and ADSL
DSL vs ADSL
DSL (Digital Subscriber Line) is the generic term for services that provide internet connections using digital data connections between a modem and a phone line. What’s great about DSL, is that even when the phone line is in use, there is no interruption, and you can still experience a high speed internet connection even when you are making calls. The only issue is, that when you are close to the central office of the company with which you are subscribed, you will have faster internet, but when you are far from their central office, although you are within their scope, you will have a slower internet connection.
There are different types of DSL. There’s SDSL, VDSL, and ADSL. ADSL stands for Asymmetric Digital Subscriber Line. This type of service means that the speed of data sent is known as upstream, and the data received is known as downstream, and the speeds are not always guaranteed to be the same. They have different speeds that change from time to time. The most requested service is the ADSL service. In regards to ADSL, the internet service providers offer options for higher bandwidth, in upstream, downstream or both. The only thing is, they naturally charge higher rates for higher speeds.
ADSL uses a special ADSL modem, and a micro-filter in the subscriber’s telephone line.
This is what allows the ADSL service and telephone service to be used at the same time. The word ‘asymmetric’ in ADSL actually means that the downstream is faster than the upstream. ADSL supports a downstream rate of 1.5 to 9 Mbps, and an upstream rate of 16 to 640 Kbps.
When you use ADSL, your PC will always be connected to the internet, as long as the power is on, and once you ‘turn on’ your computer, your PC will automatically have an internet connection, unless you manually disconnect. Unlike dial-ups, ADSL can serve various computers within a house for multiple members simultaneously.
Summary:
The simple difference between DSL and ADSL is that DSL is the generic term for Digital Subscriber Line services, and ADSL, or Asymmetric Digital Subscriber Line, is just one of its types. There are other types of DSL, such as SDSL and VDSL.
DSL (Digital Subscriber Line) is the generic term for services that provide internet connections using digital data connections between a modem and a phone line. What’s great about DSL, is that even when the phone line is in use, there is no interruption, and you can still experience a high speed internet connection even when you are making calls. The only issue is, that when you are close to the central office of the company with which you are subscribed, you will have faster internet, but when you are far from their central office, although you are within their scope, you will have a slower internet connection.
There are different types of DSL. There’s SDSL, VDSL, and ADSL. ADSL stands for Asymmetric Digital Subscriber Line. This type of service means that the speed of data sent is known as upstream, and the data received is known as downstream, and the speeds are not always guaranteed to be the same. They have different speeds that change from time to time. The most requested service is the ADSL service. In regards to ADSL, the internet service providers offer options for higher bandwidth, in upstream, downstream or both. The only thing is, they naturally charge higher rates for higher speeds.
ADSL uses a special ADSL modem, and a micro-filter in the subscriber’s telephone line.
This is what allows the ADSL service and telephone service to be used at the same time. The word ‘asymmetric’ in ADSL actually means that the downstream is faster than the upstream. ADSL supports a downstream rate of 1.5 to 9 Mbps, and an upstream rate of 16 to 640 Kbps.
When you use ADSL, your PC will always be connected to the internet, as long as the power is on, and once you ‘turn on’ your computer, your PC will automatically have an internet connection, unless you manually disconnect. Unlike dial-ups, ADSL can serve various computers within a house for multiple members simultaneously.
Summary:
The simple difference between DSL and ADSL is that DSL is the generic term for Digital Subscriber Line services, and ADSL, or Asymmetric Digital Subscriber Line, is just one of its types. There are other types of DSL, such as SDSL and VDSL.
Difference Between HTM and HTML
HTM vs HTML
HTM and HTML refer to file extensions of HTML files. They are files of a plain text type. HTML stands for Hyper Text Markup Language, which is a markup language used for creating web pages. HTML actually uses markup tags for describing web pages. As file extensions, they are denoted as .htm or .html. If you use HTML files to create your web page, then an .html or .htm will most likely appear at the end of its URL. Here are examples: ‘http://code.google.com/chrome/extensions/samples.html’ and ‘http://edgewisdom.com/Finance1.htm’.
HTM is used only as an alternate extension to .HTML. This happens for some reasons, for example, in some operating systems, like the Disk Operating System and Window 3.X, they do not allow the use of four-letter extensions. Therefore, instead of .html they use .htm. As well as in the world of windows, three-letter extensions are most commonly used, like ‘.doc’ and ‘.exe’, therefore, .htm is more applicable here. However, there are also some cases, with other server’s, when they create their default directory to only support .html files. So it means .htm is not allowed on that server.
In actual fact, .htm was usually used back in the old days, like during the time when DOS was popular. In the present time, computers can now easily support big files and wide length of file names, therefore, having a four-letter extension is not a problem anymore.
Anyway, file extensions are useful to operating systems because it helps them identify what type of data file they are dealing with, and also so that they can find an appropriate program to read or edit it. If your computer is unable to open the files, especially files with unknown file extensions, it means that you may not have the associated program installed to be able to read it, or you may have windows registry errors related to the file extensions.
In the case of the internet, web browsers do not really see the file extensions, so when you type a URL with no HTM or HTML extension, the browser can still find the source, and display its contents. HTM and HTML are only two of the thousands of types of file extensions. Although, HTML is the most common web page format used, and that’s why they are more popular.
Summary:
HTM and HTML are both file extensions of HTML files. The only difference is that .HTM is used as an alternate to .HTML for some operating systems and servers that do not accept four-letter extensions. Although today, operating systems have developed, and can now support long file names and four-letter file extensions.
HTM and HTML refer to file extensions of HTML files. They are files of a plain text type. HTML stands for Hyper Text Markup Language, which is a markup language used for creating web pages. HTML actually uses markup tags for describing web pages. As file extensions, they are denoted as .htm or .html. If you use HTML files to create your web page, then an .html or .htm will most likely appear at the end of its URL. Here are examples: ‘http://code.google.com/chrome/extensions/samples.html’ and ‘http://edgewisdom.com/Finance1.htm’.
HTM is used only as an alternate extension to .HTML. This happens for some reasons, for example, in some operating systems, like the Disk Operating System and Window 3.X, they do not allow the use of four-letter extensions. Therefore, instead of .html they use .htm. As well as in the world of windows, three-letter extensions are most commonly used, like ‘.doc’ and ‘.exe’, therefore, .htm is more applicable here. However, there are also some cases, with other server’s, when they create their default directory to only support .html files. So it means .htm is not allowed on that server.
In actual fact, .htm was usually used back in the old days, like during the time when DOS was popular. In the present time, computers can now easily support big files and wide length of file names, therefore, having a four-letter extension is not a problem anymore.
Anyway, file extensions are useful to operating systems because it helps them identify what type of data file they are dealing with, and also so that they can find an appropriate program to read or edit it. If your computer is unable to open the files, especially files with unknown file extensions, it means that you may not have the associated program installed to be able to read it, or you may have windows registry errors related to the file extensions.
In the case of the internet, web browsers do not really see the file extensions, so when you type a URL with no HTM or HTML extension, the browser can still find the source, and display its contents. HTM and HTML are only two of the thousands of types of file extensions. Although, HTML is the most common web page format used, and that’s why they are more popular.
Summary:
HTM and HTML are both file extensions of HTML files. The only difference is that .HTM is used as an alternate to .HTML for some operating systems and servers that do not accept four-letter extensions. Although today, operating systems have developed, and can now support long file names and four-letter file extensions.
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