You are troubleshooting a network issue where devices on VLAN 10 cannot communicate with devices on VLAN 20 across a trunk link. You suspect a native VLAN mismatch. What is a common symptom of this issue?

The trunk link goes down because the native VLANs do not match.

Untagged frames are placed into the wrong VLAN, causing broadcast traffic to leak between VLANs.

Tagged frames are dropped because the native VLAN IDs do not match.

All traffic is forwarded to the management VLAN.

Which Junos log message or condition is typically observed when a native VLAN mismatch exists on a trunk?

All VLANs are automatically pruned from the trunk.

The switch reboots to recover from the mismatch.

A syslog message indicating a native VLAN mismatch is generated.

The trunk interface is placed in an error-disabled state.

Which Junos command verifies that an IP phone has received the voice VLAN ID via LLDP-MED?

show ethernet-switching interface

You are configuring a voice VLAN on a Junos access port. The IP phone supports LLDP-MED. What is the purpose of enabling LLDP-MED in this scenario?

To automatically inform the phone of the voice VLAN ID.

To authenticate the phone on the network.

To increase the speed of the phone's network connection.

To provide power over Ethernet to the phone.

Which Junos operational command verifies the native VLAN configured on a trunk interface?

show ethernet-switching interface

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

Domain 1Objective 5

Native VLANs and Voice VLANs JN0-352 Practice Questions (Page 1)

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 1–5

1expert · medium
You are troubleshooting a network issue where devices on VLAN 10 cannot communicate with devices on VLAN 20 across a trunk link. You suspect a native VLAN mismatch. What is a common symptom of this issue?
Select an answer first
2foundation · easy
Which Junos log message or condition is typically observed when a native VLAN mismatch exists on a trunk?
Select an answer first
3foundation · easy
Which Junos command verifies that an IP phone has received the voice VLAN ID via LLDP-MED?
Select an answer first
4application · medium
You are configuring a voice VLAN on a Junos access port. The IP phone supports LLDP-MED. What is the purpose of enabling LLDP-MED in this scenario?
Select an answer first
5foundation · easy
Which Junos operational command verifies the native VLAN configured on a trunk interface?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to JN0-352

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by Juniper Networks. “JN0-352” is a trademark of its owner, used for identification only.