You have configured a voice VLAN on an access port, but the IP phone is not receiving the correct VLAN information. Which command would you use to verify that LLDP-MED is enabled and the phone is receiving the voice VLAN advertisement?

show ethernet-switching interface

What is the purpose of using LLDP-MED in a voice VLAN configuration?

To block all non-voice traffic on the port.

To encrypt voice traffic between the phone and the switch.

To automatically assign the voice VLAN ID to the IP phone.

To increase the speed of the access port.

Two Juniper switches are connected via a trunk link. The native VLAN on Switch A is VLAN 10, and on Switch B it is VLAN 20. Both switches have VLANs 10 and 20 configured. What is the most likely result of this configuration?

Untagged frames sent by Switch A are placed into VLAN 20 on Switch B, potentially causing traffic to be forwarded to the wrong broadcast domain.

All frames, including tagged ones, will be dropped because the native VLAN mismatch causes a security violation.

The trunk link will not come up because the native VLANs must match for 802.1Q trunking to operate.

Switch B will automatically adjust its native VLAN to match Switch A to avoid misconfiguration.

What is the primary purpose of a voice VLAN on an access port?

To allow voice traffic to bypass all firewall rules.

To separate voice traffic from data traffic on the same physical port.

To provide a higher bandwidth path for voice traffic.

To encrypt voice traffic between the phone and the switch.

A company is deploying IP phones and wants to ensure that voice traffic is prioritized over data traffic. They plan to use a voice VLAN. What is the primary benefit of using a voice VLAN?

It eliminates the need for QoS policies because voice traffic is automatically prioritized.

It separates voice and data traffic into different broadcast domains, allowing for separate QoS policies.

It increases the bandwidth available to voice traffic by using a separate physical link.

It allows voice and data traffic to share the same IP subnet.

Juniper NetworksCertified Specialist, Enterprise Routing and Switching (JNCIS-ENT)

Domain 1Objective 5

Native VLANs and Voice VLANs JN0-352 Practice Questions (Page 3)

Part of the Layer 2 Switching and VLANs domain, which makes up ~15% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~5–9 in this domain), expect 1–1 from this objective — we provide 16 practice questions to prepare you well beyond it. (estimate)

16questions here

4free pages

6concepts

Questions 11–15

11application · medium
You have configured a voice VLAN on an access port, but the IP phone is not receiving the correct VLAN information. Which command would you use to verify that LLDP-MED is enabled and the phone is receiving the voice VLAN advertisement?
Select an answer first
12foundation · easy
What is the purpose of using LLDP-MED in a voice VLAN configuration?
Select an answer first
13application · medium
Two Juniper switches are connected via a trunk link. The native VLAN on Switch A is VLAN 10, and on Switch B it is VLAN 20. Both switches have VLANs 10 and 20 configured. What is the most likely result of this configuration?
Select an answer first
14foundation · easy
What is the primary purpose of a voice VLAN on an access port?
Select an answer first
15application · medium
A company is deploying IP phones and wants to ensure that voice traffic is prioritized over data traffic. They plan to use a voice VLAN. What is the primary benefit of using a voice VLAN?
Select an answer first

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