WIRELESS LAN Guide
Internet was never potential without the invention of inviting switches, satellites, fibre optic cables and Lan cards. Those who find it difficult to get idea of wide area network, internet is one live example of it. Before we look into Wide Area Network (Wan), we must have an insight of what is Local Area Network (Lan).
Local Area Network, as the name suggests, is a network built in a diminutive area by using Lan cables, switches and Lan cards. One example is a network of a university or a firm office at one location. The computers on a Local Area Network are linked to a network switch. You can whether make this network a workgroup (share diminutive resources) or domain (share all kind of resources and services). On domain, you have the privilege to grant permissions to users to share resources or limit them to use obvious services. As Lan can only work within a obvious distance, we need Wan to connect institutions and offices at different locations.
Wan connects two or more Lans, and this is potential with the use of devices like routers. There are many ways to build a Wide area network. You can whether lay down your own cables in the middle of two or more locations or you can use leased lines. Most companies use leased lines as very diminutive companies can bear the cost of thousands pounds for it.
The businesses and institutions get leased lines from different assistance providers and pay them on monthly basis. Today, many companies are establishing Virtual inexpressive Network (Van) by using leased lines. A Van can be established by buying Live Ips from the assistance provider, at two or more different locations. To fetch this network, the Network Administrator uses routers and firewalls to fetch the network.
On Wan, the users at different locations are linked to a central server. The name of this computer is server because it is there to serve all the computers on the network. All the computers on the network are linked to central database on the server. These computers save data at real time, send queries to server and fetch reports at the same time. The banking system is a very good example of a Wan network.
The benefits of a Wide area network are unlimited. You sit in one country, and the office in the other country is just like a room next door. You can share documents, reports, prints, query databases, crusade through thousands of records in just quick seconds, monitor distant location offices by using digital cameras and do much more. The advantages of a Wide area network are infinite; it is up to you what benefits you want to get using this technology; the sophistication obviously increases with the cost factor.
With many advantages of Wide area network, there are also some disadvantages associated, which though can be addressed by using latest technologies. On Wan, the protection is a big factor. When you connect on the internet using Live Ips, whatever can intrude in and hack your system. For this purpose, firewalls and routers securities are implemented, which undoubtedly come with on the price of thousands pounds. The latency period on Wan is high, but it can also be addressed by taking high speed internet connections. To organize a Wide Area Network, the businesses and institutions need a lot of money, as technologies that make your network fetch as well as serve your needs are very costly.