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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1.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

2.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

4.單項(xiàng)選擇題Which command should you use to verify what networks are being routed by a given OSPF process（）

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

5.多項(xiàng)選擇題While troubleshooting some connectivity issues，you issue the “show ip ospf database”in order to ex amine the link state database. Which three of the statements below are true regarding the OSPF link state database（）

A.Each router has an identical link state database.
B.External routes are imported into a separate link state database.
C.Syn chronization of link state databases is maintained via floodingo f LSAs.
D.Information in the link state database is used to build a routing table by calculating a shortest-path tree.
E.By default,link state databases are refreshede very 10 minutes in the absence of topology changes.

7.多項(xiàng)選擇題EIGRP is being used as the routing protocol on the PassGuide network. Whiletroubleshooting some network connectivity issues，you notice a large number of EIGRP SIA（StuckinActive）messages. What causes these SIA routes（）

A.The neighboring router stops receiving ACK packets from this router.
B.The neighboring router starts receiving route updates from this router.
C.The neighboring router is too busy to answer the query(generally caused by high CPU utilization).
D.The neighboring router is having memory problems and cannot allocate the memory to process the query or build the reply packet.

8.單項(xiàng)選擇題At which lay er of the OSI model does the Spanning Tree Protocol (STP) operate at（）

A.Lay er 5
B.Lay er 4
C.Lay er 3
D.Lay er 2
E.Lay er 1

9.多項(xiàng)選擇題Which two statements about the Cisco Aironet Desktop Utility (ADU) are true（）

A.The Aironet Desktop Utility （ADU ）profile manager feature can create and manage only one profile for the wireless client adapter.
B.The Aironet Desktop Utility (ADU) can support only one wireless client adapter installed and used at a time.
C.The Aironet Desktop Utility (ADU) can be used to establish the association between the client adapter and the access point , manage authentication to the wireless network , and enable encryption.
D.The Aironet Desktop Utility (ADU) and the Microsoft Wireless Configuration Manager can be used at the same time to configure the wireless client adapter.

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