Which IPv4 address range is reserved for multicast?

169.254.0.0 – 169.254.255.255

What does the (S,G) entry in a multicast forwarding table represent?

A specific source (S) sending to a specific group (G), used for source trees.

A group entry that is shared by all sources for that group.

An entry that is used only for IPv6 multicast.

An entry that only exists on the rendezvous point.

What is the result of the IPv4 multicast-to-MAC address mapping process?

Each IPv4 multicast address maps to a unique MAC address, preventing any overlap.

The mapping process results in a 32-bit overlap, causing all multicast addresses to share the same MAC address.

The mapping process is reversible, allowing the exact IPv4 address to be derived from the MAC address.

Multiple IPv4 multicast addresses can map to the same MAC address, creating a 24-bit overlap.

How does TTL scoping limit the reach of multicast traffic?

By decrementing the TTL of multicast packets and dropping them when the TTL reaches zero.

By using a special multicast TTL value that is only recognized by certain routers.

By configuring routers to only forward multicast packets with a TTL greater than a configured threshold.

By using the multicast group address to determine the maximum TTL allowed.

What is the purpose of administrative scoping in multicast?

To limit the TTL of multicast packets to a specific number of hops.

To automatically filter multicast traffic based on the source address.

To reduce the number of multicast forwarding entries by aggregating groups.

To restrict multicast traffic to a specific set of routers or interfaces using administrative boundaries.

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

Domain 5Objective 1

Multicast Addressing and Traffic Flow JN0-664 Practice Questions (Page 3)

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 15 practice questions to prepare you well beyond it. (estimate)

15questions here

3free pages

6concepts

Questions 11–15

11foundation · easy
Which IPv4 address range is reserved for multicast?
Select an answer first
12foundation · easy
What does the (S,G) entry in a multicast forwarding table represent?
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13foundation · easy
What is the result of the IPv4 multicast-to-MAC address mapping process?
Select an answer first
14foundation · easy
How does TTL scoping limit the reach of multicast traffic?
Select an answer first
15foundation · easy
What is the purpose of administrative scoping in multicast?
Select an answer first

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