Cisco 642-902

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Cisco Implementing cisco ip routing Sample Questions:

1. A router is running BGP and receives more than one route for a particular prefix. Assume all the routes for this prefix have the same attributes. Which three path features would be reasons be for the router to ignore some of the routes and not consider them as candidates for the best path? (Choose three.)

A) paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH
B) paths for which the NEXT_HOP is inaccessible
C) paths from an internal BGP (iBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH
D) paths that are marked as not synchronized in the show ip bgp output
E) paths for which the NEXT_HOP is accessible
F) paths that are marked as synchronized in the show ip bgp output

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

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

3. Exhibit:

Refer to the topology diagram R3 is redistributing the EIGRP routers into OSPF. What will the EIGRP routes appear in the routing table of R1?

A) E2
B) O
C) D
D) D EX
E) O IA

4. Which BGP attribute is used by BGP to prevent routing loops?

A) origin
B) next-hop
C) weight
D) local preference
E) AS-path
F) MED

5. During BGP configuration on a router that has peered with other BGP speakers, the BGP command aggregate-address 172.32.0.0 255.255.252.0 is issued. However, the peers do not receive this aggregate network in BGP advertisements. Also, the router does not have this aggregate network in its BGP table. Which option indicates a possible reason this command did not cause the router to advertise the aggregate network to its peers?

A) The BGP command no auto-summary is missing.
B) The BGP command no synchronization is missing.
C) The next hop IP address must be a loopback address.
D) Interface NULL 0 is likely shutdown.
E) Subnets of 172.32.0.0/22 do not exist in the BGP table.
F) The IGP running on this router does not have network 172.32.0.0/22 installed.

Solutions: