Alcatel-Lucent 4A0-108 問題集

質問 1：
Is the RP mandatory in an ASM network?
A. Depends on whether there is an elected BSR. With an elected BSR, RP is not mandatory. Without an elected BSR, RP is mandatory
B. In IPv4, RP is mandatory for ASM. In IPv6, it is not
C. No
D. Yes
正解：D

質問 2：
An end station receiving a broadcast packet will always process the data up to at least which layer of the OSI stack?
A. Layer 3
B. Layer 2
C. Layer 4
D. Layer 7
E. Layer 1
正解：A

質問 3：
Select the statements that relate to the Shared Path Tree. (Choose three)
A. It is always created as a result of switchover
B. It is represented by (S, G) entries
C. It is represented by (*, G) entries
D. It is the initial forwarding path created
E. The path between receiver and source is always the shortest path
F. The RP is the root of the tree
G. The multicast source is the root of the tree
正解：C,D,F

質問 4：
Click the exhibit.

Based on the configuration, channels 239.1.1.1, 239.1.1.2, 239.1.1.3 and 239.1.1.5 have already been established. What happens when this router receives an IGMP report to join group 239.1.1.6?
A. No existing channel is torn down, and the new channel for 239.1.1.6 is established as there are enough resources.
B. The router tears down either channel 239.1.1.1 or 239.1.1.2 first, and then establishes a new channel for 239.1.1.6.
C. The router tears down channel 239.1.1.3 first, and then establishes a new channel for
239.1.1.6.
D. The new channel 239.1.1.6 cannot be established, and a log is generated.
正解：D

質問 5：
Under what circumstances will the multicast data flow remain on the Shared Path Tree in a PIM ASM network?
A. When PIM Dense Mode is in use
B. It will never remain on the Shared Path Tree
C. When multicast traffic is below a configured threshold
D. It will always remain on the Shared Path Tree
正解：C

質問 6：
How many responses should be received if IGMP version 2 is in use and a router sends a Query to a specific multicast group that has 6 active receivers on the local broadcast domain?
A. 2
B. 6
C. 7
D. It will be random
E. 1
正解：E
解説: (Topexam メンバーにのみ表示されます)

質問 7：
Which of the following is a characteristic of a packet with a destination address in the Local Network Control Block address range?
A. A packet with this address is always forwarded throughout the multicast routing domain but never forwarded outside the multicast routing domain
B. A packet with this address is never forwarded beyond the local link regardless of the TTL
C. A packet with this address can only be processed by a router
D. A packet with this address is never forwarded beyond the local link unless the TTL is greater than 1
正解：B