单项选择题

Refer to the exhibit. OSPF is configured on all routers in the network. On the basis of the show ip ospf n eighbor output, what prevents R1 from establishing a full adjacency with R2? ()

A. Router R1 will only establish full adjacency with the DR and BDR on broadcast multi- access networks.
B. Router R2 has been elected as a DR for the broadcast multiaccess  network in OSPF area 1.
C. Routers R1 and R2 are configured as stub routers for OSPF area 1 and OSPF area 2.
D. Router R1 and R2 are configured for a virtual link between OSPF area 1 and OSPF area 2.
E. The Hello parameters on routers R1 and R2 do not m atch.


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1.单项选择题When troubleshooting an EIGRP connectivity problem, you notice that two connected EIGRP routers are not becoming EIGRP neighbors. A ping between the two routers was successful.What is the next thing that should be checked?()

A. Verify that the EIGRP hello and hold timers match exactly.
B. Verify that EIGRP broadcast packets are not being dropped between the two routers with the show ip EIGRP peer command.
C. Verify that EIGRP broadcast packets are not being dropped between the two routers with the show ip EIGRP traffic command.
D. Verify that EIGRP is enabled for the appropriate networks on the local and neighboring router.

2.单项选择题

Refer to the exhibit. Routing updates for the 192.168.1.0 network are being received from all three neighbors. Which statement is correct regarding the result of the con figuration shown? ()

A. The router will prefer the next hop of 172.16.1.1 for packets destined for the 192.168.1.0 network.
B. The router will prefer the next hop of 172.26.1.1 for packets destined for the 192.168.1.0 network.
C. The router will adve rtise the 192.168.1.0 network only to 172.30.1.1.
D. The router will advertise the 192.168.1.0 network only to 172.26.1.1.
E. The router will prefer the next hop of 172.26.1.1 for packets except those destined for the 192.168.1.0 network.

3.单项选择题

Refer to the e xhibit. It is desired to set up a BGP neighbor relationship between routers R1 and R4. BGP packets between them could travel through R2 or R3. What is the simplest configuration that will allow for failover?()

A. Configure BGP n eighbor relationships between all interfaces on R1 and R4.
B. Install a direct connection between R1 and R4.
C. Configure loopback interfaces on R1 and R4 to provide the update source address for BGP packets.
D. Configure only one neighbor relationship between R1's 192.168.1.2 interface and R4's 172.16.10.2 interface.

4.单项选择题When implementing OSPFv3, which statement describes the configuration of OSPF areas?()

A. In interface configuration mode, the OSPFv3 area ID combination assigns interfaces to OSPFv3 areas.
B. In router configuration mode, the network wildcard area ID combination assigns networks to OSPFv3 areas.
C. In interface configuration mode, the IPv6 OSPF process area ID combination assigns interfaces to OSPFv3 areas.
D. In router configuration mode, the IPv6 OSPF interface area ID combination assigns interfaces to OSPFv3 areas.

5.多项选择题The IP multicast global configuration command ip  pirn send - rp - announce IoopbackO scope 31 group - list 5 issued on multicast router RTA. What are the two results? ()

A. RTA will forward RP announcements provided they are within the scope of 31.
B. RTA will originate RP announcements with TTL s et to 31.
C. RTA will originate RP announcements for multicast groups that match access - list 5.
D. RTA will drop all RP announcements it receives if the TTL field is greater than 31.

6.单项选择题Route redistribution (RR) has become an integral part of IP network design as the res ult of a growing need for disseminating certain routes across routing protocol boundaries. By default, which description is true when redistributing routes from other routing protocols into OSPF?()

A. Summarized routes are unacceptable
B. They will appe ar in the OSPF routing table as type E2 routes
C. Only routes with lower administrative distances will be imported
D. All imported routes are to be automatically summarized if possible

8.单项选择题

Refer to the exhibit. Routers R1 and R2 have been configured to operate with OSPF. Routers R1 and R3 have been configured to operate with RIP. After configuring the redistribution between OSPF a nd RIP on R1, no OSPF routes are distributed into RIP. What should be done to correct this problem? ()

A. The redistribution command should be reentered with the match route - type parameter included.
B. The redistribution command should be reentered wit h the route - map map - tag parameter included.
C. The redistribution command should be reentered with the metric metric - value parameter included.
D. Routes will first need to be distributed into another protocol, and then into RIP.

9.单项选择题

Refer to the exhibit. What is required to complete the IPv6 routing configurations shown?()

A. Interface authentication must be configured
B. The routing processes must be configured with an area ID
C. IP unicast routing must be enabled
D. IPv4 ad dresses must be applied to the interfaces

10.单项选择题

Refer to the parti al configurations in the exhibit. What address is utilized for DR and BDR identification on Router1?()

A. the serial 1/1 address
B. the serial 2/0 address
C. a randomly generated internal address
D. the configured router - id address

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