BUSINESS DATA COMMUNICATIONS AND NETWORK
BUSINESS DATA COMMUNICATIONS AND NETWORK
13th Edition
ISBN: 9781119441113
Author: FITZGERALD
Publisher: amazon.com
Question
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Chapter 4, Problem 1Q
Program Plan Intro

Open System Interconnection (OSI) model:

  • OSI means reference model which changes the networking computing face.
  • It is referred as network model.
  • OSI layer has seven layers and data link layer is one of the OSI layers.

Expert Solution & Answer
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Explanation of Solution

Data link layer:

  • Data link layer is also called as “layer 2”.
  • Data link layer formats the message and send the data over the physical media.
  • It handles three functions, namely media access control, message description, and error control.
  • It is responsible for moving a message from one system to the next system in the overall path from the sender or receiver.
  • It marks where a message starts and where it ends and also detects and corrects the error that occurs in transmission.

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