Computer-Networks
August 30, 2024Computer-Networks
August 30, 2024Computer-Networks
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Question 435
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Assume that source S and destination D are connected through five intermediate routers R1, R2,R3,R4 and R5. Determine how many times each packet has to visit the Network layer and the Data Link layer during transmission from S to D?
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Network Layer: 7 times, Data Link Layer: 12 times
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Network Layer: 5 times, Data Link Layer: 12 times
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Network Layer: 12 times, Data Link Layer: 12 times
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Network Layer: 7 times, Data Link Layer: 7 times
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Question 435 Explanation:
The packet will visit network layer 7 times(5 times at router and 1 time at source and another time at destination) , once at each node [S, R, R,R,R,R, D] and packet will visit Data Link layer 12 times. One time at S and one time at D, then two times for each intermediate router R[5*2=10] as data link layer is used for link to link communication.
Correct Answer: A
Question 435 Explanation:
The packet will visit network layer 7 times(5 times at router and 1 time at source and another time at destination) , once at each node [S, R, R,R,R,R, D] and packet will visit Data Link layer 12 times. One time at S and one time at D, then two times for each intermediate router R[5*2=10] as data link layer is used for link to link communication.