The _________ layer performs error checking which is redundant 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 data link layer performs error checking by adding a frame check sequence (FCS) to each frame, while the transport layer performs error checking by using checksums. These two functions are redundant, so it is important to choose a layer that does not duplicate these functions. The other options either perform different functions or duplicate functions with other layers.

The _________ Layer Performs Error Checking Which Is Redundant with the Function