Which statement correctly describes the operation of an LDP Layer 2 circuit?

It requires the customer edge devices to run LDP to exchange labels with the provider edge routers

It carries the customer's Layer 2 frames transparently, preserving the original header and payload

It terminates the customer's Layer 2 frames and routes them based on the destination IP address

It requires a full mesh of BGP sessions between all provider edge routers

Which configuration element is required on a Juniper device to enable an LDP Layer 2 circuit?

A loopback interface with an IP address

A protocol family MPLS configuration on the core-facing interfaces

A logical interface with family 'l2circuit' and a neighbor statement specifying the remote PE and virtual circuit ID

A BGP session with the remote provider edge router

Which Junos command is used to trace LDP signaling messages for troubleshooting Layer 2 circuit establishment?

monitor traffic interface ge-0/0/1

traceoptions file ldp-log flag all

Juniper NetworksCertified Professional, Service Provider Routing and Switching (JNCIP-SP)

Domain 7Objective 3

LDP Layer 2 Circuits and Virtual Circuit Labels JN0-664 Practice Questions (Page 2)

Part of the Layer 2 VPNs domain, which makes up ~16% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~6–10 in this domain), expect 1–1 from this objective — we provide 20 practice questions to prepare you well beyond it. (estimate)

20questions here

4free pages

5concepts

Questions 6–10

6foundation · easy
Which statement correctly describes the operation of an LDP Layer 2 circuit?
Select an answer first
7foundation · easy
Which configuration element is required on a Juniper device to enable an LDP Layer 2 circuit?
Select an answer first
8application · medium
You are troubleshooting an LDP Layer 2 circuit between two PE routers. The circuit is operationally up, but customer traffic is not passing. You suspect a virtual circuit label issue. Which command would you use to verify the virtual circuit label assigned to the Layer 2 circuit on the local PE?
Select an answer first
9foundation · easy
Which Junos command is used to trace LDP signaling messages for troubleshooting Layer 2 circuit establishment?
Select an answer first
10application · medium
You are troubleshooting an LDP Layer 2 circuit. The circuit is up, but customer traffic is not passing. You suspect the virtual circuit label is not being used correctly. Which command would you use to see the virtual circuit label in the forwarding table?
Select an answer first

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LDP Layer 2 Circuits and Virtual Circuit Labels JN0-664 Practice Questions (Page 2)

Questions 6–10

Which statement correctly describes the operation of an LDP Layer 2 circuit?

Which configuration element is required on a Juniper device to enable an LDP Layer 2 circuit?

You are troubleshooting an LDP Layer 2 circuit between two PE routers. The circuit is operationally up, but customer traffic is not passing. You suspect a virtual circuit label issue. Which command would you use to verify the virtual circuit label assigned to the Layer 2 circuit on the local PE?

Which Junos command is used to trace LDP signaling messages for troubleshooting Layer 2 circuit establishment?

You are troubleshooting an LDP Layer 2 circuit. The circuit is up, but customer traffic is not passing. You suspect the virtual circuit label is not being used correctly. Which command would you use to see the virtual circuit label in the forwarding table?

Keep studying — Layer 2 VPNs