CCNA: Cisco Certified Network Associate — Question 1183

A Cisco IP phone receives untagged data traffic from an attached PC. Which action is taken by the phone?

Answer options

• A. It drops the traffic.
• B. It allows the traffic to pass through unchanged.
• C. It tags the traffic with the native VLAN.
• D. It tags the traffic with the default VLAN.

Correct answer: B

Explanation

The correct answer is B because a Cisco IP phone is designed to allow untagged traffic from a connected device, like a PC, to pass through without modification. The other options are incorrect as the phone does not drop the traffic, nor does it tag it with the native or default VLAN.