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Which of the following are shared distribution tree characte

题目
多选题
Which of the following are shared distribution tree characteristics？ （Choose all that apply.）（）
A

Memory requirements are higher for shared distribution tree than for source distribution tree

B

Creates a tree from a central RP to all last-hop routers

C

Uses a rendezvous point

D

An optimal path is created between each source router and each last-hop router

E

Place （S，G） entry in each router’s multicast routing table

F

Place （*，G） entry in a router’s multicast routing to table

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相似问题和答案

第1题：

Which two of these are correct regarding the recommended practice for distribution layer design based on the following configuration?()

A. use a Layer 2 link between distribution switches

B. use a Layer 3 link between distribution switches

C. use a redundant link to the core

D. use a Layer 3 link between distribution switches with route summarization


参考答案：C, D

第2题：

Which of the following words is entirely arbitrary?

A.tree
B.typewriter
C.crash
D.bang

答案：A
解析：
tree是一个任意词。

crash是一个缩略语，故排除。

typewriter是复合词，故排除。

bang是拟声词，故排除。

所以只有tree的形成比较任意,综上，A选项正确。

故A选项正确。

第3题：

Which of the following is not an AVL tree?

A．

B．

C．

D．


正确答案：B

第4题：

What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM-SM operations？（）

  • A、immediately after receiving the first packet on the shared tree for a given （S，G）
  • B、after receiving over 1 kb/s traffic onthe shared tree for a given （S，G）
  • C、10 seconds after receiving the first packet on the shared tree for a given （S，G）
  • D、30 seconds after receiving the first packet on the shared tree for a given （S，G）
  • E、after receiving over 10 kb/s traffic onthe shared tree for a given （S，G）

正确答案:A

第5题：

Which of the following are spanning tree port states?（）

  • A、Learning
  • B、Spanning
  • C、Listening
  • D、Forwarding
  • E、Initializing
  • F、Filtering
  • G、Permitting

正确答案:A,C,D

第6题：

Which of the following usually causes a tree to grow unhealthy?

A. Giving a tree a special shape and a definite height.

B. Removing small side branches and making a tree look less thick.

C. Allowing too many branches to grow in the middle.

D. Having a tree surrounded by many other trees.


正确答案：C

42．答案为C  根据第二段A tree may grow healthier by removing the branches that are locking up the centre可知树中间的枝杈不利于树木生长，C与文章内容相反，因此错误。

第7题：

Which two of these statements correctly describe classic PIM-SM？（）

  • A、The IOS default is for a last-hop router to trigger a switch to the shortest path tree as soon as a new source is detected on the shared tree.
  • B、The IOS default is for every one of the routers on the shared tree to trigger a switch to the shortest path tree as soon as a new source is detected on the shared tree.
  • C、The default behavior of switching to the shortest path tree as soon as a new source is detected on the shared tree can be disabled by setting the value in the ip pim spt-threshold command to "infinity."
  • D、The default behavior of switching to the shortest path tree as soon as a new source is detected on the shared tree can be disabled by setting the value in the ip pim spt-threshold command to "zero."

正确答案:A,C

第8题：

Which of the following are shared distribution tree characteristics()

A.Memory requirements are higher for shared distribution tree than for source distributiontree.

B.Creates a tree from a central RP to all last-hoprouters.

C.Uses a rendezvous point.

D.An optimal path is created between each source router and each last-hoprouter.

E.Place（S，G）entry in each router’smulticast routing table.

F.Place（*，G）entry in a router’smulticast routing to table.


参考答案：B, C, F

第9题：

Which of the following statements is correct regarding PIM Sparse Mode operations？（）

  • A、It does not support all underlying unicast routing protocols like GBP
  • B、It supports shared trees only assuming all hosts want the multicast traffic
  • C、Receivers are registered with RP by their first-hop router
  • D、Receivers are joinedto the Shared Tree（rooted the rp ）by their local Designated Router（DR）
  • E、From the RP，traffic flows down a Source Tree to each receiver

正确答案:D

第10题：

Which of the following is true regarding Label Distribution Protocol （LDP）？（）

  • A、It is a label distribution protocol for MPLS
  • B、It is a set of procedures and messages by which LSRs establish Label Switch Paths （LSPs） through a network
  • C、Tag distribution Protocol （TDP） was the basis for LDP
  • D、All of the above are true

正确答案:D

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