642-902 Q&A – Implement an eBGP based solution (46-49)

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

QUESTION NO: 46
If a metric is not specified for routes that are redistributed into OSPF, the default metric that is assigned to the routes is 20, except for redistributed BGP routes. What is the metric that is assigned to redistributed BGP routes? Select the best response.
A.0
B.1
C.10
D.200
Answer: B

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642-902 Q&A – Implement an eBGP based solution (41-45)

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

QUESTION NO: 41
What are the two reasons for the appearance of 0.0.0.0 as the next hop for a network in the show ip bgp command output? (Choose two.) Select 2 response(s).
A. The network was originated via redistribution of an interior gateway protocol into BGP.
B. The network was defined by a static route.
C. The network was originated via a network or aggregate command.
D. The network was learned via EBGP.
E. The network was learned via IBGP.
Answer: AC

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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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