WAN - Wide Area Network
Because the condition implies, a WAN spans a big physical length. The Net is the biggest WAN, traversing the Earth.
A WAN are a geographically-dispersed collecting of LANs. A network device called a router links LANs to a WAN. In IP networking, the router maintains both a LAN address and a WAN address.
A WAN differs of a LAN in several important ways. Most WANs (like the Internet) are not owned up by any one administration but rather exist under collective or distributed ownership and management. WANs tend to use technology like ATM, Frame Relay and 10.25 for connectivity over the longest distances.
Saturday, January 30, 2010
LAN -Local Area Nertwork
LAN - Local Area Network
A local area network connects net devices across a relatively short space. A networked office block, school, or home commonly contains a single local area network, though some of the times one building leave bear a few small local area network* (perhaps one per room), and at times a local area network will span a grouping from near buildings. In TCP/IP networking, a local area network is often but not always implemented because a single IP subnet.
In addition to controlling in a limited distance, LANs are also commonly owned, controlled, and managed by a single person or organization. They also tend to use sure connectivity technologies, chiefly Ethernet and Token Ring.
A local area network connects net devices across a relatively short space. A networked office block, school, or home commonly contains a single local area network, though some of the times one building leave bear a few small local area network* (perhaps one per room), and at times a local area network will span a grouping from near buildings. In TCP/IP networking, a local area network is often but not always implemented because a single IP subnet.
In addition to controlling in a limited distance, LANs are also commonly owned, controlled, and managed by a single person or organization. They also tend to use sure connectivity technologies, chiefly Ethernet and Token Ring.
Sunday, January 10, 2010
Computer Network-Network Topology-Lan and Wan
A computer network are an group of two or many computers connected to each electronically. These means that the computers could "speak" to one another and that all computer in the network can send data to the other people. Commonly, these means that the speed of the connection are fast - faster than a normal connection to the Internet. In fact, two computers connected across the Internet isn't considered a computer network. A few basic characters by computer networks let in:
* A local area network (a great deal called a local area network) connects two or many computers in a home or an business office.
* A corporate network enables communicating one of various business office* by the same administration.
* An "internet work", some of the times called a WAN (because of the wide distance between networks) links two or more littler networks together. The biggest internetwork are called the Internet.
Out of this LAN and WAN are the two central networks designated about the base of their breadth.
Networks could as well live divided supported their organization. This may be Peer to Peer Network, Server-based Network or Client-Server Network, cross Network etc.
Computers can be break of more another networks. Networks could as well cost breaks by larger networks. The local area network in a department memory are generally connected to the corporate network of the bring up caller, and might accept favours with the corporate network of a bank building. Whatever connected machine at whatever charge of the administration possibly able to access the Internet, e.g. to show computers in the memory, show its catalogue through a internet server, or change accepted arranges into shipping instructions.
Microsoft Windows, Linux and most extra operating systems apply TCP/IP for networking. Apple Macintosh computers used Appletalk in the past times, but it uses TCP/IP at once.
To arrange a network an allow media are required. This can live wired or wireless. Twisted-pair, co-axial or fiber-optic are examples of cable and infrared radiation, blue-tooth, radio-wave, micro-wave etc. are wireless media employed for networking. When you're working on a simple LAN, computers, media and computer peripheral* are comfortable. But when you're working on a wider ambit you've use a few additional devices like bridge, gateway or router to link up another small or large networks. And obviously a communications protocol must be conserved.
To arrange a network you've to select a allow topology to arrange the hardware devices using the media. Network topology* commonly used are bus-topology, ring-topology, star-topology, tree-topology, object-oriented topology etc. Among these star-topology and tree-topology are most popular now a hours.
* A local area network (a great deal called a local area network) connects two or many computers in a home or an business office.
* A corporate network enables communicating one of various business office* by the same administration.
* An "internet work", some of the times called a WAN (because of the wide distance between networks) links two or more littler networks together. The biggest internetwork are called the Internet.
Out of this LAN and WAN are the two central networks designated about the base of their breadth.
Networks could as well live divided supported their organization. This may be Peer to Peer Network, Server-based Network or Client-Server Network, cross Network etc.
Computers can be break of more another networks. Networks could as well cost breaks by larger networks. The local area network in a department memory are generally connected to the corporate network of the bring up caller, and might accept favours with the corporate network of a bank building. Whatever connected machine at whatever charge of the administration possibly able to access the Internet, e.g. to show computers in the memory, show its catalogue through a internet server, or change accepted arranges into shipping instructions.
Microsoft Windows, Linux and most extra operating systems apply TCP/IP for networking. Apple Macintosh computers used Appletalk in the past times, but it uses TCP/IP at once.
To arrange a network an allow media are required. This can live wired or wireless. Twisted-pair, co-axial or fiber-optic are examples of cable and infrared radiation, blue-tooth, radio-wave, micro-wave etc. are wireless media employed for networking. When you're working on a simple LAN, computers, media and computer peripheral* are comfortable. But when you're working on a wider ambit you've use a few additional devices like bridge, gateway or router to link up another small or large networks. And obviously a communications protocol must be conserved.
To arrange a network you've to select a allow topology to arrange the hardware devices using the media. Network topology* commonly used are bus-topology, ring-topology, star-topology, tree-topology, object-oriented topology etc. Among these star-topology and tree-topology are most popular now a hours.
HTTP Note
HTTP stands for Hyper Text Transport Protocol. It is a communication protocol used to connect to servers on the world wide web. The primary function of HTTP is to establish a connection with a web server and transmit HTML pages to the user's browser. It allows computer user to access the internet.
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