What Is The Purpose Of The Fcs Field In A Frame?
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The FCS field in a frame is used to store a checksum value that is used to verify the integrity of the frame. The checksum is calculated by the sender and stored in the FCS field before transmission. The receiver then recalculates the checksum based on the data in the frame and compares it to the value stored in the FCS field. If the two checksums match then the frame is accepted, if not then the frame is discarded.