Which of the following IEEE 802.3 Ethernet Header and Trailer Fields provides a method for the receiving NIC to determine whether the frame experienced transmission errors?

(A) Frame Check Sequence
(B) Data and Pad
(C) Start Frame Delimiter
(D) Preamble

Answer:

Frame Check Sequence is the correct answer. FCS provides a method for the receiving NIC to determine whether the frame experienced transmission errors.

Preamble: Allow devices on the network to easily synchronize their receiver clocks.

Data and Pad: Holds data from a higher layer, typically an L3PDU (usually an IPv4 or IPv6 packet). The sender adds padding to meet the minimum length requirement for this field.

Start Frame Delimiter (SFD): Signifies that the next byte begins the Destination MAC Address field.