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Tricky Network Security

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Tricky Network Security

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?

A. 150 frames
B. 80 frames
C. 135 frames
D. 96 frames

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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 500 frames per second?

A. 146 frames
B. 92 frames
C. 38 frames
D. 156 frames

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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 250 frames per second?

A. 38 frames
B. 48 frames
C. 96 frames
D. 126 frames

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A slotted ALOHA network transmits 200-bit frames using a shared channel with a 200-kbps bandwidth. Find the throughput if the system (all stations together) produces 500 frames per second.

A. 92 frames
B. 368 frames
C. 276 frames
D. 151 frames

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A network using CSMA/CD has a bandwidth of 10 Mbps. If the maximum propagation time (including the delays in the devices and ignoring the time needed to send a jamming signal, as we see later) is 25.6 μs, what is the minimum size of the frame?

A. 128 bytes
B. 32 bytes
C. 16 bytes
D. 64 bytes

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In collision free protocol channel efficiency is given by-

A. D/(d + log2(n))
B. D*(d + log2(n))
C. Log2(n)
D. (d + log2(n))

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Find the distance from source A to destination D using Dijkstra algorithm.

A. A-b-c-j-d-k
B. A-b-c-g-h-d-k
C. A-e-d-k
D. A-e-g-h-d-k

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