A default Frame Relay WAN is classified as what type of physical network?（）

A network administrator is troubleshooting the OSPF configuration of routers R1 and R2.The routers cannot establish an adjacency relationship on their common Ethernet link.The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2.Based on the information in the graphic,what is the cause of this problem?（）

As a CCNA candidate,you must have a firm understanding of the IPv6 address structure.Refer to IPv6 address,could you tell me how many bits are included in each filed?（）

The Frame Relay network in the diagram is not functioning properly.What is the cause of the problem?（） 

Refer to the exhibit.How many broadcast domains exist in theexhibited topology？（）

What is method list for configure aaa？

當(dāng)將多個(gè)交換機(jī)加入到MST region當(dāng)中會(huì)發(fā)生什么（what happen）？

問(wèn)一個(gè)怎么樣的屬性，能讓路由不通告給任何的peer？

Refer to the exhibit.Which statement describes DLCI 17?（）

Refer to the exhibit.The network administrator is in acampus building distant from Building B.WANRouter is hosting a newly installed WAN link on interface S0/0.The new link is not functioning and the administrator needs to determine if the correct cable has been attached to the S0/0 interface.How can the administrator accurately verify the correct cable type on S0/0 in the most efficient manner?（）