exam questions

Exam JN0-648 All Questions

View all questions & answers for the JN0-648 exam

Exam JN0-648 topic 1 question 31 discussion

Actual exam question from Juniper's JN0-648
Question #: 31
Topic #: 1
[All JN0-648 Questions]

Click the Exhibit button.

Referring to the exhibit, the source is currently sending multicast traffic using group 224.1.1.1, which is being received by R1. R2 is not receiving PIM register messages.
What would be the cause of this problem?

  • A. Tunnel services have not been enabled on R1.
  • B. All routers have not been configured with the same Auto-RP discovery group.
  • C. R5 has not received an IGMP report of 224.1.1.1.
  • D. A(*,G) tree has not been built yet.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️

Comments

Chosen Answer:
This is a voting comment (?). It is better to Upvote an existing comment if you don't have anything to add.
Switch to a voting comment New
fernster
Highly Voted 4 years, 5 months ago
A is the correct answer. The multicast traffic being sent by the source must be encapsulated into a PIM register packet. If the tunneling services under the chassis stanza is not configured, a PE (PIM Encapsulation interface) will not be present in the multicast first hop router. Anyway long story short, tunneling services must be turned on or else you will not get PIM register messages sent to the RP.
upvoted 6 times
hyena
3 years, 6 months ago
https://kb.juniper.net/InfoCenter/index?page=content&id=KB13329
upvoted 2 times
...
...
Gruizzy
Most Recent 3 years, 1 month ago
Selected Answer: A
I think it's A
upvoted 1 times
...
hyena
3 years, 6 months ago
we need both RP and RD to have tunneling services.. how do you know that R1 is the RD?
upvoted 2 times
...
dahai
4 years, 6 months ago
What about A?
upvoted 4 times
...
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.

SaveCancel
Loading ...
exam
Someone Bought Contributor Access for:
SY0-701
London, 1 minute ago