Host A and Host B are connected to the same switch and Host

Host A and Host B are connected to the same switch, and Host A sends a message to Host B. When the switch starts receiving the bits, it reads the destination MAC address, determines the port Host B is on, and immediately opens a channel to that port while bits are still being received. Which switch mode is being used?

A. Cut through

B. Store and forward

C. Fragment free

D. Full duplex

Solution

Answer: A. Cut through

Cut through is correct. Cut through switches begin delivering the frame as sooon as a destination address discovered.

Store and forward is incorrect becuase Store and forward receives the entire frame before forwarding, Injcting additional latency but examining it for errors.

Fragment free is incorrect because Fragment free reads the first 64 bytes before delivering the frame

Full duplex is incorrect because Full duplex does not apply in this case.