CompTIA Network+ (N10-009) — Question 144

A VoIP phone is plugged in to a port but cannot receive calls. Which of the following needs to be done on the port to address the issue?

Answer options

• A. Trunk all VLANs on the port.
• B. Configure the native VLAN.
• C. Tag the traffic to voice VLAN.
• D. Disable VLANs.

Correct answer: C

Explanation

The correct answer is C because tagging the traffic to the voice VLAN allows the VoIP phone to communicate on the appropriate network segment for voice. Options A and D do not specifically address the need for voice traffic, and option B, while potentially useful, does not ensure that the VoIP traffic is prioritized and properly routed.