Question

A hub transmits all incoming messages to all of its ports except the port where the messages came in. A switch usually sends messages only to the destination computer. What information does a switch collect from messages crossing its interfaces so it knows where to send data in future transmissions?

a. IP address
b. MAC address
c. Port number
d. FQDN"

Answer 1

A switch collects the MAC address from messages crossing its interfaces to know where to send data in future transmissions.

Step-by-step explanation:

A switch collects the MAC address from messages crossing its interfaces to determine where to send data in future transmissions. The MAC address is a unique identifier that is assigned to the network interface card of each device on a network.

Unlike a hub, which broadcasts incoming messages to all ports, a switch uses the MAC address to direct messages specifically to the destination computer, improving network efficiency.

Therefore, the correct answer to the question is b. MAC address.