Computer Networking

Ing network computer is a process of communication and shared resources between two or more connected computers. Shared resources you can turn on the printer, a fax modem, hard drive, CD-DVD-Rom, databases and data files. Computer network can be divided into small or local network, network ing between computers in the Office (LAN), medium network (MAN), network between all network WAN network between computers and two branches in the city, it is saved on the local and the other one can be thousands of miles away in any other country in the world.
Connectivity is achieved by network device known as the "Router" Internet is the world's largest global network where millions of computers from all over the world and relate to each other.
Ing network is the practice of combining two or more computers or devices with each other. connection can be wired or wireless network. Computer network can be classified differently, as mentioned above, depending on the geographic area.
There are two main types of network client server and peer-to-peer. Client server computing, the computer plays an important role, known as the server where the database files, the data in the form of Web pages, documents, or spread sheet files, videos, and resources are placed.
All other client and server computers network referred to as a client, and they get their data from the server.In a peer-to-peer network all play the same role and not a computer as a centralized server.In large enterprises worldwide client server network model is large.
Topology network defines the structure, design and layout network. There are various bus topology, ring, Star, mesh, hybrid, etc. Star topology is the most commonly used network topology.Star topology, all computers in network linked to a central device such as a hub or switch is thus forms a star like structure if the switch node fails for any reason, all connections and communications between computers in network will be stopped.
In General network language used computers and network devices and this language is called protocols commonly used and popular protocols on the Internet and in home and other network s called TCP/IP: TCP/IP is not singleprotocol, but it is a set of multiple protocols.
Network can be wired or wireless connection and TCP/IP can function as types network.
Dataflow computer network can be divided into seven logical tiers, called OSI layersmodel, Intel and Xerox Corporation and has been standardized BY ISO.
1. application layer
2. presentation layer
3. Session layer
4. transport layer
Network level
6. data link layer
a. Media access control layer sub-
b. logical link control layer sub-
7. physical layer.
In network can be divided into different levels and ranges and it depends on the requirements network and geographical location. computer network can be divided into local network, personal room network Centre network, wireless LAN, urban network network and all network.
There are several Network connection, HomePNA, power line communication method. (a) the Ethernet and WiFi network also may be divided into several different types, based on services provided by a server farm, storage area network s, the costs of managing network s, additional network s, SMALL network, wireless network and jungle network sec.