多項(xiàng)選擇題Which of the following characteristics describe the BPDU Guard feature（）

A.ABPDU Guard port should only be configured on ports with PortFast enabled.
B.BPDU Guard and PortFast should not be enabled on the same port.
C.BPDU Guard is used to ensure that superior BPDUs are not received on a switch port.
D.ABPDU Guard port receiving a BPDU will go into err-disablestate.
E.ABPDU Guard port receiving a BPDU will be disabled.
F.BPDU Guard can be enabled on any switch port.


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3.單項(xiàng)選擇題Which command should you use to verify what networks are being routed by a given OSPFprocess？（）

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

4.多項(xiàng)選擇題While troubleshooting some connectivity issues， you issue the "show ip ospf database" in order toexamine the link state database. Which three of the statements below are true regarding theOSPF link state database？（）

A.Each router has an identical link state database
B.External routes are imported into a separate link state database
C.Synchronization of link state databases is maintained via flooding of 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 refreshed every 10 minutes in the absence of topologychanges

6.多項(xiàng)選擇題Which three of the following network features are methods used to achieve high availability（）

A.Spanning Tree Protocol（STP）
B.Delay reduction
C.Hot Standby Routing Protocol（HSRP）
D.Dynamic routing protocols
E.Quality of Service（QoS）
F.Jitter management

7.單項(xiàng)選擇題

Refer to the exhibit. On the basis of the information presented， which statement is true？（）

A.OSPF router 5.0.0.2 is an ABR
B.Network 6.0.0.0/8 was learned from an OSPF neighbor within the area
C.The default route is learned from an OSPF neighbor
D.A default route is configured on the local router

8.單項(xiàng)選擇題


From the perspective of routerPG-1，what kind of router is the router with IP address 192.23.1.1（）

A.A peer router runningIBGP
B.A peer router runningEBGP
C.A community member running IBGP
D.A peer group member running IBGP
E.A peer group member running EBGP

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