Cyclic Redundancy Check (CRC) in Ethernet frames is how many bytes?

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Multiple Choice

Cyclic Redundancy Check (CRC) in Ethernet frames is how many bytes?

Explanation:
Ethernet frames carry a trailer called the Frame Check Sequence that holds a 32-bit CRC, i.e., four bytes. This CRC is computed over the frame’s header and payload, and the receiver recalculates it on arrival to verify integrity by comparing it to the FCS. If they match, the frame is considered intact; if not, it’s discarded as corrupted. A 16-bit CRC would offer less protection, an 8-byte field is larger than standard for Ethernet, and six bytes is the length of a MAC address, not the CRC.

Ethernet frames carry a trailer called the Frame Check Sequence that holds a 32-bit CRC, i.e., four bytes. This CRC is computed over the frame’s header and payload, and the receiver recalculates it on arrival to verify integrity by comparing it to the FCS. If they match, the frame is considered intact; if not, it’s discarded as corrupted. A 16-bit CRC would offer less protection, an 8-byte field is larger than standard for Ethernet, and six bytes is the length of a MAC address, not the CRC.

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