Which multicast scoping mechanism uses the TTL field in IP packets to limit how far multicast traffic can propagate?

Reverse path forwarding (RPF) check

A network engineer is configuring PIM-SM with a bootstrap router (BSR) in a large enterprise network. The engineer wants to ensure that only the designated router in the core can become the BSR. Which configuration should be applied?

Disable BSR on all routers except the core router.

Configure the BSR address on all routers to point to the core router.

Configure the BSR priority on the core router to be higher than all other routers.

Configure the core router as the RP and use static RP on all other routers.

A host on a LAN segment is not receiving multicast traffic for group 239.1.1.1. The router interface is configured for IGMP. The administrator runs 'show igmp group' and sees the group listed with a single member. However, the host still does not receive the traffic. Which next step should the administrator take to isolate the problem?

Reboot the host to force a new IGMP join.

Increase the IGMP query interval on the interface.

Verify the multicast route table entry for the group on the router.

Check the IGMP version configured on the host.

Juniper NetworksCertified Professional, Enterprise Routing and Switching (JNCIP-ENT)

Domain 3Objective 3

Multicast Configuration and Operations JN0-650 Practice Questions (Page 4)

Part of the IP Multicast domain, which makes up ~8% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~3–5 in this domain), expect 1–2 from this objective — we provide 21 practice questions to prepare you well beyond it. (estimate)

21questions here

5free pages

6concepts

Questions 16–20

16foundation · medium
Which multicast scoping mechanism uses the TTL field in IP packets to limit how far multicast traffic can propagate?
Select an answer first
17application · medium
A network engineer is configuring PIM-SM with a bootstrap router (BSR) in a large enterprise network. The engineer wants to ensure that only the designated router in the core can become the BSR. Which configuration should be applied?
Select an answer first
18foundation · medium
Which IGMP version supports source-specific multicast (SSM) group membership reporting?
Select an answer first
19foundation · medium
Which multicast route table entry type indicates that traffic is flowing on the shared tree (RPT) in PIM-SM?
Select an answer first
20application · medium
A host on a LAN segment is not receiving multicast traffic for group 239.1.1.1. The router interface is configured for IGMP. The administrator runs 'show igmp group' and sees the group listed with a single member. However, the host still does not receive the traffic. Which next step should the administrator take to isolate the problem?
Select an answer first

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Multicast Configuration and Operations JN0-650 Practice Questions (Page 4)

Questions 16–20

Which multicast scoping mechanism uses the TTL field in IP packets to limit how far multicast traffic can propagate?

A network engineer is configuring PIM-SM with a bootstrap router (BSR) in a large enterprise network. The engineer wants to ensure that only the designated router in the core can become the BSR. Which configuration should be applied?

Which IGMP version supports source-specific multicast (SSM) group membership reporting?

Which multicast route table entry type indicates that traffic is flowing on the shared tree (RPT) in PIM-SM?

Keep studying — IP Multicast