Computer Networks · Question 10 · Medium
A Go-Back-N ARQ protocol uses 3-bit sequence numbers. What is the maximum sender window size?
- 4
- 8
- 3
- 7
Answer and explanation
Answer: D. 7
Explanation: With n-bit sequence numbers, Go-Back-N allows a window of at most 2^n - 1 = 7. Selective Repeat would allow at most 2^(n-1) = 4.
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