Answer to Question #327941 in Computer Networks for Tom

Question

Despite being adjacent in a protocol stack, Data Link Layer protocols and Network Layer protocols each employ a number of similar fields in their headers (i.e. a field named 'X' appears in the headers of both layers, and the role of 'X' is similar for both layers).

For each of these three fields:

a. describe its typical role, and

b. provide an example to demonstrate why their 'duplication' does not introduce unnecessary redundancy.

Answer 1

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