GATE CS 2023 Set 1 — Question 17
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Computer Networks → Data Link Layer → Efficiency Numericals
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Question
Suppose two hosts are connected by a point-to-point link and they are configured to use Stop-and-Wait protocol for reliable data transfer. Identify in which one of the following scenarios, the utilization of the link is the lowest.
Correct answer
(B) Longer link length and higher transmission rate
Solution
The efficiency (utilization) of the Stop-and-Wait protocol is given by:where .
- (Propagation Delay) . Thus, longer link length increases .
- (Transmission Delay) . Thus, higher transmission rate decreases .
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