CCNA: Cisco Certified Network Associate — Question 1025

PC1 tries to send traffic to newly installed PC2. The PC2 MAC address is not listed in the MAC address table of the switch, so the switch sends the packet to all ports in the same VLAN. Which switching concept does this describe?

Answer options

• A. frame flooding
• B. MAC address table
• C. spanning-tree protocol
• D. MAC address aging

Correct answer: A

Explanation

The correct answer is A, frame flooding, because the switch sends the packet to all ports when it doesn't know the destination MAC address. The other options, such as the MAC address table, describe the mechanism that stores MAC addresses, while spanning-tree protocol and MAC address aging relate to network topology management and address management respectively, but do not directly address the flooding behavior.