Data Communications and Computer Networks by Pearson

Error Detection and Correction

 1. Explain various design issues of the data link layer.

 Ans: Datalinklayer is responsibleforefficien andreliable transmission offramesbetweentwo

adjacentnodesconnectedviaasinglecommunicationchannel.However,sometime,theefficienc of

datatransferissignificantl affectedduetofinit datarateofcommunicationcircuits,non-zeropropa-

gationdelaybetweenthesendingandthereceivingtimesofabit,anderrorsinconnection.Thus,to

achieveefficien datatransmission,allthesefactorsmustbekeptinmind.Someoftheimportantdesign

issuesofdatalinklayerareasfollows: ...