Question

A link has bandwidth 1 Mbps, one-way propagation delay 20 ms, and frame size 1000 bits. Using a sliding window protocol with window size W=44, what is the approximate link efficiency?

A ≈ 4.76%
B ≈ 50%
C ≈ 20%
D ≈ 100%
E ≈ 2%
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