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單項(xiàng)選擇題

You have a multi-area OSPF network and you’re concerned because one of the sites is havingconnectivity problem to resources in a different area. Which IOS privileged mode command wouldyou enter to confirm that your network: 
(A) has a path to its ABR, 
(B) has a path to its ASBR, and 
(C)the SPF calculation is functional?()

A.show ip protocols
B.show running-config
C.show ip ospf neighbor
D.show ip ospf border-routers

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