ARQ Protocol

Question 1

In a sliding window ARQ scheme, the transmitter's window size is N and the receiver's window size is M. The minimum number of distinct sequence numbers required to ensure correct operation of the ARQ scheme is

A
min (M,N)
B
max (M,N)
C
M + N
D
MN
       Computer Networks       ARQ Protocol       Gate 2004-IT
Question 1 Explanation: 
For such a scheme to work properly, we will need a total of M+N distinct sequence numbers.
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