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Computer Networks
Data Link Layer
Q
Automatic repeat request error management mechanism is provided by ________
AA. Logical link control sublayer
BB. Media access control sublayer
CC. Network interface control sublayer
DD. Application access control sublayer
Correct Answer:
A. A. Logical link control sublayer
Explanation:
The logical link control is a sublayer of data link layer whose main function is to manage traffic, flow and error control. The automatic repeat request error management mechanism is provided by the LLC when an error is found in the received frame at the receiver’s end to inform the sender to re-send the frame.
