welcome to networking

 A Computer network or data network is a telecommunication network which allows nodes to share resource. in computer networks , networked computing device exchange data with each other.
using a data link. The connection between nodes are established using either cable media or wireless media. the best-known computer network is the internet.

Computer network differ in the transmission medium used to carry their singles, communication protocols to organize  network traffic , the network size , topology and organizational intent. 
Computer network support an enormous number of application and service such as access to the word wide web, digital video, digital audio, shared use of application and storage servers , printer and fax machines, use of email and instant messaging application as well as many other .
In most cases, application -specific communication protocols are layered over other more general communication protocols. This formidable collection of information technology requires skilled network management to keep it all running reliably.


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A network can be defined as a group of computer and other device connected in some ways so as to be able to exchange data.
Each of device on the network can be thought of as a node; each node has a unique address.
Addresses are numeric quantities that are easy for computers to work with,but not for humans to remember.
Some network also provide names that humans can more easily remember than numbers.
Example:www.javasoft.com,corresponding to the above  numeric address.


 – Consists of 4 bytes separated by periods
– The R first bytes correspond to the network address.
– The remaining H byte are used for host machine


Organization in charge of the allocation of the address range corresponding to network.
-Geographical area


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