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ISO-OSI-layers
October 5, 2023
Software-Engineering
October 6, 2023
ISO-OSI-layers
October 5, 2023
Software-Engineering
October 6, 2023

ISO-OSI-layers

Question 16
Assume that Source S and Destination D are connected through an intermediate router R. How many times a packet has to visit the network layer and data link layer during a transmission from S to D?
A
Network layer – 4 times, Data link layer – 4 times
B
Network layer – 4 times, Data link layer – 6 times
C
Network layer – 2 times, Data link layer – 4 times
D
Network layer – 3 times, Data link layer – 4 times
Question 16 Explanation: 
Source and destination are hosts. The hosts have all layers but routers have only 3 layers
i.e physical,data link and network layer. The purpose of routers is to just pass on the packet between hosts or networks.
Therefore ,
Correct Answer: D
Question 16 Explanation: 
Source and destination are hosts. The hosts have all layers but routers have only 3 layers
i.e physical,data link and network layer. The purpose of routers is to just pass on the packet between hosts or networks.
Therefore ,
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