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This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Networking knowledge and support exam preparation. Choose a topic below to get started.
1. |
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)) |
Answer» B. d*(d + log2(N)) | |
2. |
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 s, what is the minimum size of the frame? |
A. | 128 bytes |
B. | 32 bytes |
C. | 16 bytes |
D. | 64 bytes |
Answer» E. | |
3. |
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 |
Answer» E. | |
4. |
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 |
Answer» B. 48 frames | |
5. |
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 |
Answer» C. 38 frames | |
6. |
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 |
Answer» D. 96 frames | |
7. |
A pure ALOHA network transmits 200-bit frames on a shared channel of 200 kbps. What is the requirement to make this frame collision-free? |
A. | 2msec |
B. | 4msec |
C. | 2sec |
D. | 4sec |
Answer» B. 4msec | |