选择题：Refer to the exhibit. All multilayer switches are running PIM dense mode. Recipient A and

题目内容：

Refer to the exhibit. All multilayer switches are running PIM dense mode. Recipient A and Recipient B are sending IGMPv2 joi n messages to their respective multilayer switches. Which statement is true?（）

A. The Multicast Server is the root of the multicast tree. Switches 1, 3, 4, and 5 will participate in the multicast tree once pruning has taken place.

B. The Multicast Serv er is the root of the multicast tree. Switches 4 and 5 will participate in the multicast tree once pruning has taken place.

C. Switch 3 is the root of the multicast tree. Switches 3,4, and 5 will participate in the multicast tree once pruning has taken place.

D. Switch 3 is the root of the multicast tree. Switches 1,3,4, and 5 will participate in the multicast tree once pruning has taken place.

E. Switch 1 is the root of the multicast tree. Switches 1,4, and 5 will participate in the multicast tree once pruning has taken place.

F. Switch 1 is the root of the multicast tree. Switches 1,3,4, and 5 will participate in the multicast tree once pruning has taken place.

参考答案：

选择题：Refer to the exhibit. All multilayer switches are running PIM dense mode. Recipient A and

()是种子内贮藏养分的组织。

YouneedtoconfigureanewCiscoroutertobeinstalledintheCompanyVOIPnetwork.Whichthreeinterfacec

为维护生态平衡,减少污染,化学防治应()。

放大镜工具每次放大的比例是原大小的?()

Which three statements are true about IP multicast configuration?()