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Question 37 - N10-009 discussion

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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?

A.
Trunk all VLANs on the port.
Answers
A.
Trunk all VLANs on the port.
B.
Configure the native VLAN.
Answers
B.
Configure the native VLAN.
C.
Tag the traffic to voice VLAN.
Answers
C.
Tag the traffic to voice VLAN.
D.
Disable VLANs.
Answers
D.
Disable VLANs.
Suggested answer: C

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.

Comparison with Other Options:

Trunk all VLANs on the port: Trunking all VLANs is typically used for links between switches, not for individual device ports.

Configure the native VLAN: The native VLAN is for untagged traffic and does not address the need for separating and prioritizing voice traffic.

Disable VLANs: Disabling VLANs would mix voice and data traffic, leading to potential performance issues and lack of traffic separation.

Implementation:

Configure the switch port connected to the VoIP phone to tag the traffic for the designated voice VLAN, ensuring proper network segmentation and quality of service.

CompTIA Network+ study materials on VLAN configuration and VoIP implementation.

asked 02/10/2024
Adrian Petrisoaia
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