Gce Model Questions Vol1 2017 Computer Studies Question 4

Practice objective / multiple choice question 4 from the 2017 Gce Model Questions Vol1 Computer Studies examination.

Gce Model Questions Vol1 2017 Computer Studies Objective / Multiple Choice Medium Difficulty
Question 4 GCE_MODEL_QUESTIONS_VOL1 • 2017 • COMPUTER_STUDIES • objective

In a LAN operating at \(100\text{ Mbps}\), the maximum Ethernet frame size is \(1500\text{ bytes}\). In a star topology the central hub introduces a processing delay of \(2\,\mu\text{s}\) per frame, and the signal must travel \(5\,\mu\text{s}\) from the source to the hub and another \(5\,\mu\text{s}\) from the hub to the destination (propagation delay). In a bus topology there is no hub delay and the signal travels only \(5\,\mu\text{s}\) from source to destination. Assuming negligible other delays, compute the total time from the start of transmission to the end of reception for (a) the star topology and (b) the bus topology, and state the difference between the two times.

Answer Options

A. Star: 134 µs; Bus: 126 µs; Difference: 8 µs
B. Star: 130 µs; Bus: 124 µs; Difference: 6 µs
Correct Answer C. Star: 132 µs; Bus: 125 µs; Difference: 7 µs
D. Star: 135 µs; Bus: 125 µs; Difference: 10 µs
Correct Answer
C
Correct Option:
Star: 132 µs; Bus: 125 µs; Difference: 7 µs

About This Question

This is Gce Model Questions Vol1 2017 Computer Studies Question 4. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Computer Studies examination.

Difficulty level: Medium .

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