A set of rules for a particular type of communication.
Two types of Protocol
1.Connection Oriented 2.Connectionless Oriented
Connection Oriented
1.Follows the same path for data transfer
2.Acknowledgement
3.Reliable
4.e.g. TCP, SPX, AppleTalk datagram protocol
Connectionless Oriented
1.Follows the path where less traffic is found
2.No Acknowledgement
3.Non-Reliable
4.e.g. IP, IPX, UDP, AppleTalk protocol
