Which frame field is responsible for error checking A Preamb

Which frame field is responsible for error checking?

A. Preamble

B. SFD

C. FCS

D. Length/Type

Solution

C is correct. The Frame Check Sequence (FCS) field provides a CRC or checksum for error checking.

A, B, and D are incorrect. A is incorrect because the preamble indicates a frame is coming. B is incorrect because the start frame delimiter indicates the preamble is finishing, and the next bits begin the frame. D is incorrect because the length/type indicates the length of frame or type of Layer 3 protocol transmitted.