Question 2525 – Process-Threads
December 5, 2023DSSSB PGT 2018 Male
December 5, 2023Stop-and-Wait-ARQ
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Question 3
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Suppose that the stop-and-wait protocol is used on a link with a bit rate of 64 kilobits per second and 20 milliseconds propagation delay. Assume that the transmission time for the acknowledgment and the processing time at nodes are negligible. Then the minimum frame size in bytes to achieve a link utilization of at least 50% is _________.
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320
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321
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322
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323
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Question 3 Explanation:
Given B = 64 kbps
Tp = 20 ms
η ≥ 50%
For η≥50% ⇒ L≥BR
⇒ L = 64×103×2×20×10-3
= 2560bits
= 320bytes
Tp = 20 ms
η ≥ 50%
For η≥50% ⇒ L≥BR
⇒ L = 64×103×2×20×10-3
= 2560bits
= 320bytes
Correct Answer: A
Question 3 Explanation:
Given B = 64 kbps
Tp = 20 ms
η ≥ 50%
For η≥50% ⇒ L≥BR
⇒ L = 64×103×2×20×10-3
= 2560bits
= 320bytes
Tp = 20 ms
η ≥ 50%
For η≥50% ⇒ L≥BR
⇒ L = 64×103×2×20×10-3
= 2560bits
= 320bytes