A network administrator wants to ensure that voice traffic from IP phones is separated from data traffic on access ports. The phones do not support LLDP-MED. What is the best approach?

Use a trunk port and manually assign the phone to a VLAN.

Configure the voice VLAN on the access port and manually configure the phone to use that VLAN.

Place the phone in the same VLAN as the PC and rely on QoS to prioritize voice traffic.

Use a separate physical switch for voice traffic.

A Junos switch is configured with a trunk interface. You want to ensure that untagged frames received on the trunk are dropped. What is the correct configuration?

Set the native VLAN to a VLAN that is not used on the trunk.

Remove the native VLAN from the trunk's allowed VLAN list.

Disable the native VLAN feature on the interface.

What is a common symptom of a native VLAN mismatch between two switches connected by a trunk?

The trunk interface goes down automatically.

Untagged traffic is placed in the wrong VLAN on one switch.

All traffic on the trunk is dropped.

All VLANs become untagged on the trunk.

You are troubleshooting intermittent connectivity between two switches connected by a trunk. You suspect a native VLAN mismatch. Which command would you use to verify the native VLAN configuration on the local interface?

show ethernet-switching interface ge-0/0/1

show configuration interfaces ge-0/0/1

You are troubleshooting a native VLAN mismatch between two switches. You have verified that the native VLAN on the local interface is 10. What is the next step to confirm the mismatch?

Check the MAC address table for the remote switch's MAC address.

Check the native VLAN on the remote switch using 'show ethernet-switching interface'.

Check the LLDP neighbors to see the remote switch's native VLAN.

Check the routing table for the remote switch's management IP.

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

Domain 1Objective 5

Native VLANs and Voice VLANs JN0-352 Practice Questions (Page 2)

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 6–10

6application · medium
A network administrator wants to ensure that voice traffic from IP phones is separated from data traffic on access ports. The phones do not support LLDP-MED. What is the best approach?
Select an answer first
7application · medium
A Junos switch is configured with a trunk interface. You want to ensure that untagged frames received on the trunk are dropped. What is the correct configuration?
Select an answer first
8foundation · easy
What is a common symptom of a native VLAN mismatch between two switches connected by a trunk?
Select an answer first
9expert · medium
You are troubleshooting intermittent connectivity between two switches connected by a trunk. You suspect a native VLAN mismatch. Which command would you use to verify the native VLAN configuration on the local interface?
Select an answer first
10expert · medium
You are troubleshooting a native VLAN mismatch between two switches. You have verified that the native VLAN on the local interface is 10. What is the next step to confirm the mismatch?
Select an answer first

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