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Tricky Network Security
Q
A pure ALOHA network transmits 200-bit frames on a shared channel of 200 kbps. What is the throughput if the system (all stations together) produces 1000 frames per second?
AA. 150 frames
BB. 80 frames
CC. 135 frames
DD. 96 frames
Correct Answer:
C. C. 135 frames
Explanation:
Frame transmission time Tfr= 200/200 kbps or 1 ms. If the system creates 1000 frames per second, or 1 frame per millisecond, then G = 1 S = G × e−2G = 0.135 (13.5 percent) This means that, Throughput =1000 × 0.135 = 135 frames.