Twenty hosts are connected to a hub Host A sends a unicast m

Twenty hosts are connected to a hub. Host A sends a unicast message to Host B. Which of the following is not true?

A. Only Host B opens and processes the message.

B. All hosts receive the message.

C. All hosts open and process the message.

D. The destination address field holds Host B’s MAC address.

Solution

C is correct. Only the host that the unicast message is addressed to will open and process the message.

A, B, and D are incorrect. All hosts receive the message since they are all connected to a Layer 1 device. Only Host B will open and process the message since the destination address field matches its MAC address.