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單項(xiàng)選擇題

At which layer of the OSI model does the Spanning Tree Protocol （STP） operate at？（）

A.Layer 5
B.Layer 4
C.Layer 3
D.Layer 2
E.Layer 1

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單項(xiàng)選擇題

Which command would display OSPF parameters such as filters，default metric，maximum paths，and number of areas configured on a outer（）

A.show ip protocol
B.show ip route
C.show ip ospfinterface
D.show ip ospf
E.show ip nterface
F.None of the other alternatives apply

多項(xiàng)選擇題

An OSPF link can be in multiple states at any givenmoment(ie.Exstart,exchange,full). Which two IOS commands let you view the state of the link（）

A.show ip ospf
B.show ip protocols
C.show ip ospfneighbor
D.show ip ospfinterface

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