Which switch mode operation reads only the first 6 bytes before making a switching decision?

A. Cut-through mode
B. Frag-free mode
C. Store-and-forward mode
D. Fast switching

A. Cut-through mode copies the first 6 bytes after the preamble into memory and makes a switching decision on the destination MAC address. Many data center switches use this method of switching to provide low latency while assuming no collisions will exist.