Cisco Implementing Cisco Service Provider Advanced Routing Solutions - 300-510 Exam Practice Test
Refer to the exhibit. Networks 172.16.31.0/24 and 172.16.30.0/24 are advertised in area 34, and network 172.22.10.0/24 is advertised in area 0. A recent security review discovered that users connected to routers R1 and R2 have been making unauthorized access to an application running on network 172.16.31.0/24. An engineer determined that routers R1 and R2 are receiving updates for network 17.16.31.0/24. Which action resolves the issue?
Correct Answer: C
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Refer to the exhibit. ISP_A in AS 635 has four BGP neighbors connected one-by-one, starting from AS 12. R1 has been configured with bgp deterministic-med and bgp additional-paths install to influence egress traffic. After a recent reload of R10, all traffic was automatically re-routed via AS 87. A network engineer must correct the traffic flow and route the traffic via AS 101. Which configuration must the engineer apply to R1 to correct the problem without affecting the second BGP attribute?
Correct Answer: C
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Refer to the exhibit. Router R1 is configured to advertise outgoing SA messages to routers R2 and R3, but to receive incoming SA messages only from R2. Which additional configuration must an engineer apply to router R1 so it filters all MSDP SA messages from Domain-C?
Correct Answer: A
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Refer to the exhibit. A Tier 1 ISP provides connectivity services to two regional ISPs, ISP1 and ISP2, leveraging the MPLS network. OSPF is used as an internal routing protocol, and BGP is used for communication with external customers. After maintenance work on the backbone, connectivity between ISP1 and ISP2 started to fail. A network engineer for the Tier 1 ISP determined that hosted shared resources with IP prefix 192.0.21.0/24 are not reachable from the IPS2 side. Which action must be taken to restore connectivity?
Correct Answer: B
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After you change the IP address on an IOS XR router, you cannot ping the new address.
Which step did you forget to complete?
Which step did you forget to complete?
Correct Answer: D
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Refer to the exhibit. An engineer is troubleshooting a networking issue with several symptoms.
The shortest path from router R1 to R8 is underused and the longest path is overused. Traffic from 10.1.1.1 to 10.8.8.8 is routed on the longest path. Traffic between the R1 and the application server is experiencing packet drops and latency problems.
Which action resolves the issue?
The shortest path from router R1 to R8 is underused and the longest path is overused. Traffic from 10.1.1.1 to 10.8.8.8 is routed on the longest path. Traffic between the R1 and the application server is experiencing packet drops and latency problems.
Which action resolves the issue?
Correct Answer: D
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Refer to the exhibit. After maintenance to activate BGP neighbors connecting a new data center attached to R1, L3VPN customers attached to OSPF domain 100 lost connectivity to services in OSPF 200 and OSPF 300. However, Unified MPLS services within OSPF 100 remain reachable.
Which action must the network engineer take to resolve the outage?
Which action must the network engineer take to resolve the outage?
Correct Answer: B
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Which types of multicast distribution tree can PIM-SM use?
Correct Answer: E
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For which reason do you deploy BGP confederations within a BGP transit backbone?
Correct Answer: D
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Refer to the exhibit. Routers R1, R2, R3, and R4 are peer routers that reside in different administrative domains. PIM-SM is running in each autonomous system, and EBGP is configured between the peers. A network administrator has just implemented MSDP between the connected peers. When the administrator enabled the MSDP configuration, R1 and R2 failed to establish a peering relationship. All other connected routers successfully established peering sessions.
Which action must the engineer take to resolve the issue between R1 and R2?
Which action must the engineer take to resolve the issue between R1 and R2?
Correct Answer: C
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