The _________ layer performs error checking which is redundant to some extent with the function of the _________ layer.
A)application, presentation
B)physical, data link
C)transport, data link
D)presentation, transport
E)network, physical

Question

Quizplus · Accepted Answer

The transport layer performs error checking using checksums, which verifies the integrity of the data. This is to some extent redundant with the functionality of the data link layer, which also performs error checking using CRCs. However, the transport layer provides end-to-end error checking and flow control, whereas the data link layer is responsible for error detection and correction within a single network segment. Therefore, Option C is the best choice for the two layers that perform redundant error-checking.

The _________ Layer Performs Error Checking Which Is Redundant to Some