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DATA COMMUNICATION Lecture-36
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Recap of Lecture 35 Checksum Single-Bit Error Correction
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Overview of Lecture 36 Hamming Code Data Link Control Line Discipline
ENQ/ACK POLL/SELECT Flow Control
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Hamming Code Each r bit is the VRC bit for one combination of data bits r1(r2) bit is calculated using all bit positions whose binary representation includes a 1 in the first(second) position, and so on
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Hamming Code
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Data Link Layer Functions
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Data Link Layer Functions
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Line Discipline The line discipline functions of the data link layer oversee The establishment of link The right of a particular device to transmit at a given time
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Line Discipline Line discipline can be done in two ways ENQ/ACK
(peer-to-peer communication) Poll/select (primary-secondary communication)
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Line Discipline
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Summary Hamming Code Data Link Control Line Discipline ENQ/ACK
POLL/SELECT Flow Control
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Suggested Reading Section 9.7, 10.1 “Data Communications and Networking” 2nd Edition by Behrouz A. Forouzan
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