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Protocols
Protocols are set of rules and procedures for communicating.
There are many protocols are used but some are commonly used
protocols. They are:
TCP/IP
NetBEUI
DECnet
X.25
IPX/SPX and
AppleTalk
But the most important
protocol is TCP/IP. In this protocol data transmission is
managed by dividing the data into different pieces called
packets. Each packet of data contains a part of actual data,
source computer address, destination address, and
information for reassembling data at destination computer.
These packets of data travel along the fastest available
path in the network. This type of data transmission is
called packet switching and is used in internet
communication. This is the reason that the protocol is also
called Internet Protocol.
TCP/IP is divided into 3
usable classes and 2 experimental classes.
Class A, B, C are usable classes and D, E are experimental
classes. We can not use experimental classes in network.
Classes
Range
A
1.X.X.X
126.X.X.X
B
128.X.X.X
191.X.X.X
C
192.X.X.X 223.X.X.X
D
224.X.X.X 239.X.X.X
E
240.X.X.X 254.X.X.X
127.X.X.X is used for
troubleshooting.
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