Network is backbone for communication.For communication ,we need
* . Communication Media
* . Protocols
* . E-Mail
* . Cryptography
Communication Media is devices used for communication namely coaxial cable,Twisted Pair,Optical fiber etc
Protocols is a set of rules & procedures for the way to communicate.
E-Mailing system is used to tranfer the messages from one to other.
Cryptography is mainly for the security Purpose.Encryption & decryption Technology.
(i.e) Original data is not send as a original.
The original data is encrypted during transmission.It is decrypted when the receiver receives the messages.
More summaries about the Communication Network