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NO.1 How does IGMP snooping eliminate multicast flooding on the LAN?

A. The switch populates multicast source addresses into the forwarding table

B. The switch acts as an IGMP proxy for the receiver

C. The switch inspects IGMP messages between receivers and routers and populates the forwarding

table with active multicast group addresses

D. The switch inspects all multicast traffic between receivers and routers and populates the

forwarding table with active multicast group addresses

Answer: C

NO.2 Which of the following about PIM messages for IPv6 multicast routing is FALSE?

A. Hello and Join/Prune messages use All-PIM-Routers multicast address (FF02::D) as

destination.

B. Register messages use the RP's global unicast IPv6 address as destination.

C. Hello and Join/prune messages use the outgoing interface's global unicast IPv6 address as source

address.

D. Register messages use the outgoing interface's global unicast IPv6 address as source address.

Answer: C

NO.3 How does the RP get the first multicast data packet from source?

A. Via the Source Path Tree

B. Via a Register Message which encapsulates the multicast traffic

C. Via a Bootstrap Message which encapsulates the multicast traffic

D. Via the Shared Path Tree

Answer: B

NO.4 Which MAC address will the IPv4 multicast address 239.231.42.11 be translated to?

A. 01-00-5e-66-3a-6b

B. 01-00-5e-75-2a-0b

C. 01-00-5e-67-2a-0b

D. 00-01-5e-a1-2a-6b

E. 00-01-5e-67-2a-0b

F. 00-01-5e-76-2b-cc

Answer: C

NO.5 What is the destination address for MLDv2 general query?

A. FF02::1

B. FF02::2

C. FF02::16

D. The multicast group address which the router assumes its hosts might have interest in.

Answer: A

NO.6 Which of the following data delivery models are most applicable to multicast data delivery?

(Choose two)

A. One to one

B. Many to all

C. One to many

D. Many to many

E. One to all

Answer: C,D

NO.7 Which of the following are characteristics of the one-to-many model of multicast data delivery?

(Choose two)

A. Receivers are generally unknown by the source.

B. Receivers are generally known by each other.

C. It is well suited for applications in which the receivers provide feedback to each other and the

source.

D. There is a single data flow for each group on the source segment.

E. All devices are potentially capable of generating multicast data.

F. It is well suited for applications such as video on demand, where each source sends a separate

data stream to each of the many different receivers.

Answer: A,D

NO.8 Which of the following statements is true regarding BSR and RP?

A. The same router cannot be configured as a BSR candidate and as a static RP

B. The same router cannot be a candidate-RP and a BSR-candidate at the same time

C. There is only one active RP in a multicast routing domain at anytime

D. There is only one elected BSR in a multicast routing domain at anytime

Answer: D