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N10-009 · Question #14

N10-009 Question #14: Real Exam Question with Answer & Explanation

The correct answer is C: Tag the traffic to voice VLAN.. Understanding VoIP and VLANs: VoIP (Voice over IP) phones often use VLANs (Virtual Local Area Networks) to separate voice traffic from data traffic for improved performance and security. Tagging Traffic to Voice VLAN: Voice VLAN Configuration: The port on the switch needs to be c

Submitted by eva_at· Mar 6, 2026Describe Cloud Concepts

Question

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?

Options

  • ATrunk all VLANs on the port.
  • BConfigure the native VLAN.
  • CTag the traffic to voice VLAN.
  • DDisable VLANs.

Explanation

Understanding VoIP and VLANs: VoIP (Voice over IP) phones often use VLANs (Virtual Local Area Networks) to separate voice traffic from data traffic for improved performance and security. Tagging Traffic to Voice VLAN: Voice VLAN Configuration: The port on the switch needs to be configured to tag traffic for the specific voice VLAN. This ensures that voice packets are prioritized and handled correctly. VLAN Tagging: VLAN tagging allows the switch to identify and separate voice traffic from other types of traffic on the network, reducing latency and jitter for VoIP communications.

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