Juniper Exam JN0-664 Topic 5 Question 53 Discussion

Actual exam question for Juniper's JN0-664 exam

Question #: 53
Topic #: 5

[All JN0-664 Questions]

Exhibit

Which two statements about the output shown in the exhibit are correct? (Choose two.)

AThe PE is attached to a single local site.

BThe connection has not flapped since it was initiated.

CThere has been a VLAN ID mismatch.

DThe PE router has the capability to pop flow labels

Show Suggested Answer

Suggested Answer: A, B

The output is from the show l2vpn connections command on a Juniper router. This command is used to verify the status of Layer 2 VPN (L2VPN) pseudowires between Provider Edge (PE) routers.

Breakdown of Key Information:

Instance: vpn-A

This is the L2VPN instance being monitored.

Connection Status (St)

The connection status is 'Up', meaning the pseudowire is operational.

Local Site: CE1-2 (2)

The PE router is attached to a single local site (CE1-2).

Uptime & Connection Flaps

The output shows the last time the connection was up:

Time last up: Apr 11 14:35:27 2020

The '# Up trans' value is 1, meaning this connection has been established once and has not flapped since it was initiated.

VLAN ID Mismatch Check

The legend includes 'VM -- VLAN ID mismatch', but this status is not present in the connection output.

This means there is NO VLAN ID mismatch.

Flow Labels

The Flow Label Transmit is No, and the Flow Label Receive is No.

This means the PE router does NOT have the capability to pop flow labels.

by Titus at Aug 18, 2025, 11:33 AM

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Edwin

5 days ago

I think option B sounds familiar; I remember something about connection stability in our practice questions.

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Jarod

11 days ago

This is right up my alley! I've dealt with similar issues before, so I'm confident I can identify the two correct statements about the output.

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Stephaine

16 days ago

Ugh, network troubleshooting is not my strong suit. But I'll give it a try and see if I can at least eliminate a couple of the options.

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Clorinda

21 days ago

Okay, I think I've got a handle on this. The key is to focus on the details provided in the output and match them up with the answer choices. I'll give it my best shot.

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Karrie

26 days ago

Hmm, I'm not too familiar with the specific terminology used in this output. I'll need to think through each option carefully and see if I can eliminate any incorrect answers.

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Aleshia

1 months ago

This looks like a pretty straightforward question about network connectivity. I'll carefully review the output and see if I can identify any clues about the connection status.

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