单项选择题

Which of the following is not considered a common approach to narrow the field of potential problem causes（）

A.Following the traffic path
B.Top-down
C.Comparing configurations
D.Bottom-up
E.Divide and conquer
F.ExamineS LAs

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多项选择题

Which two of the following descriptions are correct according to the displayed output of thecommand show ip bgp summary？（）

A.The BGP session to the 10.1.1.1 neighbor is established
B.The router is trying to create a BGP peering session with the 10.1.1.1 neighbor
C.The BGP session to the 10.3.3.3 neighbor is created， but the router received no BGP routingupdates from the 10.3.3.3 neighbor
D.The router is attempting to establish a BGP peering session with the 10.2.2.2 neighbor

单项选择题

Which of the following topology situations would be a qood candidate for configuring DMVPN（）

A.Extranet VPN
B.Managed overlay VPN topology
C.Hub-and-spoke VPN topology
D.Central-site VPN topology
E.Full mesh VPN topology
F.Remote-access VPN topology