What corrective action can be taken to resolve an RPF failure caused by a missing unicast route to the multicast source?

Disable multicast on the router

Increase the TTL on the multicast packets

Add a static route to the source with the correct next hop

Change the multicast group address

What is the primary purpose of Reverse Path Forwarding (RPF) in multicast routing?

To ensure multicast packets are forwarded only out of interfaces that lead back to the source

To select the best path for multicast packets based on multicast routing metrics

To forward multicast packets to all interfaces except the one they arrived on, regardless of source

To prevent multicast loops and duplicate packets by verifying that a packet arrives on the interface that the unicast routing table would use to reach the source

What is a common cause of RPF failures in a network?

The multicast packet being fragmented

The multicast source using a high TTL

The multicast group having too many receivers

Asymmetric routing, where the return path to the source differs from the forward path

In PIM-DM, how does RPF affect the forwarding of multicast packets?

RPF is not used in PIM-DM because it is a dense-mode protocol

RPF is used to select the designated router on each segment

Packets that fail the RPF check are discarded, preventing loops in the dense-mode flooding

RPF is used to determine the rendezvous point for the group

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

Domain 5Objective 3

Reverse Path Forwarding (RPF) JN0-664 Practice Questions (Page 2)

Part of the IP Multicast domain, which makes up ~18% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~6–11 in this domain), expect 1–1 from this objective — we provide 14 practice questions to prepare you well beyond it. (estimate)

14questions here

3free pages

8concepts

Questions 6–10

6foundation · easy
What corrective action can be taken to resolve an RPF failure caused by a missing unicast route to the multicast source?
Select an answer first
7foundation · easy
What is the primary purpose of Reverse Path Forwarding (RPF) in multicast routing?
Select an answer first
8application · medium
A multicast source is connected to a router via a static route. The static route points out interface ge-0/0/0. The multicast traffic from the source arrives on ge-0/0/0. The engineer wants to verify that the RPF check is passing. Which Junos command should be used?
Select an answer first
9foundation · easy
What is a common cause of RPF failures in a network?
Select an answer first
10foundation · easy
In PIM-DM, how does RPF affect the forwarding of multicast packets?
Select an answer first

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