Question

question 25
when the store - and - forward method of switching is in use, what part of the ethernet frame is used to perform an error check?
crc in the trailer
destination mac address in the header
protocol type in the header
source mac address in the header

Explanation:

In the store - and - forward switching method, the Cyclic Redundancy Check (CRC) in the trailer of the Ethernet frame is used for error checking. The CRC is a mathematical algorithm that generates a checksum value based on the data in the frame. When the frame is received, the receiver recalculates the CRC and compares it with the value in the trailer to detect errors. The destination MAC address, protocol type, and source MAC address in the header are not used for error - checking purposes.

Answer:

CRC in the trailer