How often does a host issue IGMP Host Membership Reports for group 224.0.0.1?
A. Every 60 seconds
B. Every 30 seconds
C. Whenever it receives a query
D. Every 260 seconds
E. Never
F. Every 120 seconds
正解:E
質問 2:
Which of the following describes a purpose of MP-BGP as used in NG MVPN?
A. Building GRE tunnels to carry multicast traffic.
B. Exchanging multicast routing information between CE routers.
C. Allowing a PE to discover the other PE routers in an MVPN.
D. Building MPLS tunnels to carry multicast traffic.
正解:C
質問 3:
Which of the following statements regarding the BSR and RP is FALSE?
A. A router can be configured as both a candidate-BSR and a candidate-RP.
B. A router configured as a candidate-BSR can also be configured as a static RP.
C. A converged multicast network with BSR can have multiple routers elected as RPs.
D. A router configured as a candidate-RP can also be configured as a static RP.
E. A converged multicast network with BSR can have multiple routers elected as BSRs.
正解:E
質問 4:
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.
正解:C
質問 5:
What impact does an asymmetric IGP routing topology have on the PIM RPF check?
A. The PIM RPF check may fail, since traffic from the source may arrive on one interface, while the IP route to the source may point to another interface on the PIM router.
B. PIM does not work in an asymmetric topology, therefore there is no RPF check at all.
C. There is not enough information provided here to answer the question.
D. There is no impact, since the Shared and Source Path Trees are built from the receiver to the source.
正解:D
質問 6:
Which of the following Query messages are supported by IGMP version 3? (Choose three)
A. Group Membership Query
B. Group-and-Source Specific Query
C. Group Specific Query
D. Source Specific Query
E. Host Query
正解:A,B,C
解説: (Pass4Test メンバーにのみ表示されます)
質問 7:
When a BSR message with a higher priority is seen, will a new BSR election occur?
A. Yes, after a bootstrap message wait interval
B. Yes, immediately
C. No, the new election only occurs when the elected BSR fails
D. Depends on the local configuration of whether to allow the new election or not
正解:B
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中川** -
4A0-108模試が2回分あるためほとんどの出題範囲をカバーしている 解説も丁寧に記載してある。合格だ。役に立ちました。Alcatel-Lucentさんこれからもお世話になります。