Express Learning: Data Communications and Computer Networks

9

Ethernet, Virtual Circuit Networks and SONET

1. Write a short note on IEEE 802 standards.

Ans: IEEE 802 standards were developed by IEEE in 1985 for local area networks (LANs). These standards are compatible with each other at data link layer and enable intercommunication between various devices developed by different manufacturers. These standards are classified into the following categories:

	IEEE 802.1: This category defines interface primitives for LAN. It deals with internetworking aspect, which seeks to settle down the conflicts between incompatible devices.
IEEE 802.2: This category specifies the upper part of the data link layer ...