Refer to the exhibit. Look at the command output. What can you use to prevent this behavior？（）
A.UDLD
B.spanning-tree loopguard
C.VTP mode transparent
D.switchport mode desirable
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Refer to the exhibit. Look at the command output. Assume that there is no other path，and the configuration is correct. What would be the consequences of this situation？（）
A.Users in SW1 can ping SW2 but not vice versa.
B.Users in SW2 can ping SW1 but not vice versa.
C.Users in SW1 and SW2 can ping each other.
D.Users in SW1 and SW2 cannot ping each other.
A.Multicast Source Discovery Protocol mesh-groups must be configured between the two anycast RPs.
B.The RPs must be within the same IGP domain.
C.Multicast Source Discovery Protocol must be configured between the two anycast RPs.
D.The two anycast RPs must be IBGP peers.
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aaa架構(gòu)中哪個(gè)是要求用戶輸入用戶名和密碼？
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?（）
four switches， which one will be root switch.（no pic）.
what is four ospf area type？
What is the next state of initial in spanning-tree protocol？
兩ebgp鄰居發(fā)路由過來 ，哪些屬性重置？
The Frame Relay network in the diagram is not functioning properly.What is the cause of the problem?（）
Which of the following describes the roles of devices in a WAN?（）
R1 will choose which path to reach 10.1.0.0？
SPT初始狀態(tài)之后的一個(gè)狀態(tài)是什么？