642-902 Q&A – Implement an eBGP based solution (6-10)

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

QUESTION NO: 6
Refer to the exhibit. Which statement is true about the 6.6.6.0/24 prefix? Select the best response.

6

A. If another path advertises the 6.6.6.0/24 path and has the default local preference, that path is more preferred.
B. The command neighbor send-community is configured on BGP neighbor 10.10.23.3.
C. The route 10.10.23.3 is not being advertised to other BGP neighbors.
D. Route 6.6.6.0/24 is learned by an IBGP peer.
Answer: B

QUESTION NO: 7
Observe the diagram. RTC is the hub router and RTA and RTB are the spokes. There are no virtual circuits between the spoke locations. What is needed to successfully route traffic to the 11.11.11.0/24 network from RTA? Select the best response.

7
A. The neighbor 10.10.10.1 next-hop-self command on RTA.
B. The neighbor 10.10.10.1 next-hop-self command on RTB.
C. The neighbor 10.10.10.1 next-hop-self command on RTC.
D. Nothing is required. This is the default behavior on this topology.
Answer: C

QUESTION NO: 8
Refer to the exhibit. Autonomous systems 200 and 300 have EBGP sessions established with their directly connected routers in autonomous system 100. IGP has been configured on all routers in autonomous system 100 and they successfully exchange routing updates. Traffic originated in autonomous system 200 cannot reach the destination autonomous system 300. What configuration should be done on the routers in autonomous system 100 in order for the traffic coming from autonomous system 200 to be forwarded to autonomous system 300? Select the best response.

8
A. IBGP session must be established between routers R1 and R3, and the synchronization must be turned on.
B. IBGP session must be established between routers R1 and R3, and the synchronization must be turned off.
C. IBGP session must be established between routers R1 R2 and R2 R3, and the synchronization must be turned on.
D. IBGP session must be established between routers R1 R2 and R2 R3, and the synchronization must be turned off.
E. IBGP speakers within autonomous 100 must be fully meshed, and the synchronization must be turned on.
F. IBGP speakers within autonomous 100 must be fully meshed, and the synchronization must be turned off.
Answer: F

QUESTION NO: 9
Which BGP attribute will not be advertised in routing updates to its neighboring routers? Select the best response.
A. weight
B. local preference
C. origin
D. AS_path
E. next hop
Answer: A

QUESTION NO: 10
Which two statements are true about IBGP neighbor relationships? (Choose two.)
A. An EGP or static routing is required between IBGP neighbors.
B. A full-mesh IBGP requires that neighbor relationships be established between all BGP enabled routers in the autonomous system.
C. IBGP neighbors must be in different autonomous systems.
D. The BGP split-horizon rule specifies that routes learned via EBGP are never propagated to other IBGP peers.
E. The BGP split horizon rule specifies that routes learned via IBGP are never propagated to other IBGP peers.
Answer: BE

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