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Directions (Q36–40): A 3000 km long trunk operates at 1.536 Mbps and is used to transmit 64-byte frames using a sliding window protocol. The propagation delay is 6 μs/km.

The sender window size to get the maximum efficiency is

Pick an option to check yourself, or open the answer below.

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Correct answer: B. 109

Explanation

W = 1 + 2a = 1 + 2 × 54 = 109.

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