Which is a function of a layer 2 switch?
Answer Options
Forwarding the data based on logical addressing
Repeating the electrical signal to all ports
Learning the MAC address by examining the destination MAC addresses
Determining the forwarding interfaces based upon the destination MAC address and tables
Correct Answer: D
Explanation
The switch learns MAC addresses based upon incoming ports and examination of the source MAC address. It will build a MAC address table for future lookups. It then determines forwarding interfaces based on the destination MAC address contained in the frame. Forwarding of data is based on a data-link layer address 'burned' into the network interface card (NIC) called a MAC address. Repeating electrical signals to all ports describes how a dumb hub would operate. MAC addresses are learned by the source MAC address on incoming frames to the switch, not the destination frames.