How does the network layer use the MTU value?
- The network layer depends on the higher level layers to determine the MTU.
- The network layer depends on the data link layer to set the MTU, and adjusts the speed of transmission to accommodate it.
- The MTU is passed to the network layer by the data link layer.
- To increase speed of delivery, the network layer ignores the MTU.
Explanation: The data link layer indicates to the network layer the MTU for the medium that is being used. The network layer uses that information to determine how large the packet can be when it is forwarded. When packets are received on one medium and forwarded on a medium with a smaller MTU, the network layer device can fragment the packet to accommodate the smaller size.
Exam with this question: 8.6.2 Module Quiz – Network Layer Answers
Exam with this question: Networking Devices and Initial Configuration Module 5.4.3 Network Layer Quiz
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