642-902 Q&A – Implement an eBGP based solution (31-35)

Section 3 – Implement an eBGP based solution, given a network design and a set of requirements

QUESTION NO: 31
Which option is true regarding the synchronization rule?
A. Do not use or internally advertise a route until the route is learned from a source other than BGP.
B. Do not use or advertise a route until the route is learned from a BGP peer.
C. Do not use or advertise routes marked PARTIAL.
D. Wait until a CONFIRM message is received before using routes from BGP neighbors.
Answer: A

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642-902 Q&A – Implement an eBGP based solution (21-25)

Section 3 – Implement an eBGP based solution, given a network design and a set of requirements

QUESTION NO: 21
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? Select the best response.
A. Interface NULL 0 is likely shutdown.
B. The BGP command no synchronization is missing.
C. The BGP command no auto-summary is missing.
D. Subnets of 172.32.0.0/22 do not exist in the BGP table.
E. The IGP running on this router does not have network 172.32.0.0/22 installed. F. The next hop IP address must be a loopback address.
Answer: D

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642-902 Q&A – Implement an eBGP based solution (16-20)

Section 3 – Implement an eBGP based solution, given a network design and a set of requirements

QUESTION NO: 16
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 that are marked as synchronized in the show ip bgp output
B. paths that are marked as not synchronized in the show ip bgp output
C. paths for which the NEXT_HOP is accessible
D. paths for which the NEXT_HOP is inaccessible
E. paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH
F. paths from an internal BGP (iBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH
Answer: BDE

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642-902 Q&A – Implement an eBGP based solution (1-5)

Section 3 – Implement an eBGP based solution, given a network design and a set of requirements

QUESTION NO: 1
Which command displays the IBGP and EBGP neighbors that are configured?
A. show ip bgp
B. show ip bgp paths
C. show ip bgp peers
D. show ip bgp summary
Answer: D
Explanation:
Show ip bgp summary command displays the summary of all BGP connections.

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642-902 Q&A Index (Section 2 – Implement a multi-area OSPF Network)

Section 2 – Implement a multi-area OSPF Network, given a network design and a set of requirements

• Determine network resources needed for implementing OSPF on a network
• Create an OSPF implementation plan
• Create an OSPF verification plan
• Configure OSPF routing
• Verify OSPF solution was implemented properly using show and debug commands
• Document results of OSPF implementation and verification plan

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642-902 Q&A – Implement a multi-area OSPF Network (71-76)

Section 2 – Implement a multi-area OSPF Network, given a network design and a set of requirements

QUESTION NO: 71
By default, which statement is correct regarding the redistribution of routes from other routing protocols into OSPF? Select the best response.
A. They will appear in the OSPF routing table as type E1 routes.
B. They will appear in the OSPF routing table as type E2 routes.
C. Summarized routes are not accepted.
D. All imported routes will be automatically summarized when possible.
E. Only routes with lower administrative distances will be imported.
Answer: B

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