默认题库 - CCNP(642-902)

单选题

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.

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多选题

Which two statements are true about IS - IS?（）

A. Interfaces have a default metric of 1.
B. Level 1 is intra - area and level 2 is interarea.
C. Level 1 routing is between an end system (ES) and IS while Level 2 routing is between an IS and I
D. Hosts send ISHs while routers send ESHs.
E. IS - IS is an open standard.
F. Metrics depend on interface speed.

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多选题

What two situations could require the use of multiple routing protocols? （）

A. when all equipment is manufactured by Cisco
B. when there are multiple paths to destination networks
C. because having multiple routing protocols confuses hackers
D. when migrating from an older Interior Gateway Protocol (IGP) to a new IGP
E. when using UNIX host - based routers
F. when smaller broadcast domains are desired

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单选题

What is a key benefit of using a GRE tunnel to provide connectivity bet ween branch offices and headquarters?（）

A. authentication, integrity checking, and confidentiality
B. less overhead
C. dynamic routing over the tunnel
D. granular QoS support
E. open standard
F. scalability

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单选题

When verifying OSPF virtual link problems, which is an important item to check on the two transit OSPF routers?（）

A. OSPF process ID
B. OSPF router ID
C. OSPF network type
D. OSPF memory usage
E. OSPF CPU utilization
F. OSPF stub area configuratio

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单选题

Several links have been broken so th at for the next day or two, what was formerly a contiguous area 0 has been broken into two parts. However, both parts of area 0 have working links into area 1 using routers with RID 1.1.1.1 and 2.2.2.2. Which answers list the command on the router with RID 1.1.1.1 to create a virtual link to help solve this temporary problem?（）

A. area 0 virtual - link 2.2.2.2
B. area 1 virtual - link 2.2.2.2
C. area 0 source - rid 1.1.1.1 dest - rid 2.2.2.2
D. virtual - link transit - area 1 RID 2.2.2.2

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单选题

Which of the following answers is the least likely reason for an engineer to choose to use route redis tribution?（）

A. To exchange routes between merged companies
B. To give separate control over routing to different parts of one company
C. To support multiple router vendors
D. To knit together an OSPF area if the area becomes discontiguou

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单选题

Which of the following is an OSPF configuration parameter that is used on an ABR, but not on an internal router？（）

A virtual link to area 0.
B. OSPF summarization command.
C. default - cost extension to the area command.
D. no - summary extension to the area stub comm and.
E. None of the other alternatives apply

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单选题

An engineer is trying to summarize the following networks using the "ip summary- address eigrp"command: 10.8.88.0/25 10.8.89.48/29 10.8.64.96/27 Which network and subnet mask below would be the smallest EIGRP summary address to include all three subnets?（）

A. 10.8.64.0 255.255.224.0
B. 10.8.64.0 255.255.128.0
C. 10.8.64.0 255.255.192.0
D. 10.8.0.0 255.255.192.0

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单选题

Router R1, a branch router, connects to the Internet using DSL. Some traffic flows through a GRE and IPsec tunnel, over the DSL connection, destined for an Enterprise network. Which of the following answers best describes the router's logic that tells the router, for a given packet, to apply GRE encapsulation to the packet?（）

A. When the packet received on the LAN interface is permitted by the ACL listed on the tunnel greacl command under the incoming interface
B. When routing the packet, matching a route whose outgoing interface is the GRE tunnel interface
C. When routing the packet, matching a route whose outgoing interface is the IPsec tunnel interface
D. When permitted by an ACL that was referenced in the associated crypto ma

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