Cisco CCNP Service Provider 300-515 Questions & Answers

• Question 51:

  

  Refer to the exhibit. A network operator is implementing EVPN IRB on PE1. Which two command placements enable the advertisement of Type 2 routes and what information do Type 2 routes contain? (Choose two.)

  A. The operator adds in "host-routing" under the VRF EVPN.

  B. Type 2 routes contain MAC/IP information.

  C. Type 2 routes contain Ethernet Auto-Discovery information.

  D. The operator adds in "host-routing" under the BVI651 interface.

  E. Type 2 routes contain inclusive source-specific multicast route information.

  Correct Answer: BD

  Reference: https://www.cisco.com/c/en/us/td/docs/iosxr/ncs5500/vpn/61x/b-ncs5500-l2vpn-configuration-guide-61x/b-ncs5500-l2vpn-configuration-guide-61x_chapter_01010.html

• Question 52:

  An engineer needs to improve MPLS network management by implementing a set of tools to support the NOC engineers in troubleshooting network failures. Which feature should the engineer implement to check the connectivity of the MPLS LSP between the ingress and egress PE routers?

  A. MPLS OAM

  B. MPLS-TP

  C. LDP autodiscovery

  D. extended ping

  Correct Answer: A

  Reference: https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k_r5-3/mpls/configuration/guide/b-mpls-cg53x-asr9k/b-mpls-cg53x-asr9k_chapter_01000.html

• Question 53:

  Which two BGP attributes prevent loops in a route reflector environment? (Choose two.)

  A. cluster ID

  B. local preference

  C. origin

  D. originator ID

  E. AS_PATH

  Correct Answer: AD

  Reference: https://www.ciscopress.com/articles/article.asp?p=2756480andseqNum=10

• Question 54:

  While configuring the VRF Selection feature, you get an error message after typing the below statement:

  Router(config)#no vrf selection source 172.16.0.0 255.255.0.0 vrf VRF1

  Which action caused this message?

  A. the entry of an inconsistent IP address and mask for VRF Selection

  B. an attempt to configure a VRF instance on an interface that already has VRF Selection configured

  C. an attempt to remove a VRF Selection entry that does not exist

  D. an attempt to configure a VRF Selection table that does not exist

  Correct Answer: C

  Reference: https://www.cisco.com/c/en/us/td/docs/ios/12_2/12_2sz/feature/guide/122szvrf.html

• Question 55:

  An ISP provides a major client MPLS VPN for managed services. The MPLS engineering team needs to use the advanced VPN feature of selective VRF import so that only specific prefixes are present in the required VPNs. Which aspect of this feature must the team consider?

  A. A route must pass the import route map first and then the route target import filter.

  B. The routers that are imported in the VRF can be BGP and IGP routes, so other match conditions in the route map, besides communities, can be used.

  C. The import-map command is applied under the PE interface that connects to the CE router.

  D. A route is imported into the VRF only when at least one RT that is attached to the route matches one RT that is configured in the VRF and the route is permitted by the import route map.

  Correct Answer: D

  Reference: https://www.ccexpert.us/mpls/configuring-selective-vrf-import.html

• Question 56:

  In a typical service provider environment, which two tools are used to help scale PE router connectivity requirements? (Choose two.)

  A. route reflectors

  B. VPNv4 address family

  C. originator ID

  D. cluster ID

  E. confederations

  Correct Answer: AE

• Question 57:

  Which tool identifies the point of failure in a P2MP LSP from the ingress LSR?

  A. Jitter TLV

  B. SPAN

  C. P2MP traceroute

  D. P2MP ping

  Correct Answer: C

  Reference: https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k_r5-3/mpls/configuration/guide/b-mpls-cg53x-asr9k/b-mpls-cg53x-asr9k_chapter_01000.html

• Question 58:

  An engineer is troubleshooting an ongoing network outage. Which command should he use that can display the live log files for a process or service running on a network device?

  A. traceroute

  B. show run

  C. ping

  D. debug

  Correct Answer: D

• Question 59:

  

  Refer to the exhibit. Which statement about this output is true?

  A. The router IP 192.168.1.2 sent an implicit null, and the output is from the penultimate LSR.

  B. The adjacent router is the egress LSR and has mpls ldp explicit-null configured.

  C. The adjacent LSR router configured mpls label range 0.

  D. The zero in the second column is the normal behavior of an egress router LSR.

  Correct Answer: B

• Question 60:

  An engineer is investigating an MPLS LDP issue. Which command should an engineer use on a Cisco IOS XE device to display the contents of the LFIB?

  A. show mpls forwarding-table

  B. show mpls ldp neighbors

  C. show mpls ldp labels

  D. show mpls ldp bindings

  Correct Answer: A

  Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mpls/command/mp-cr-book/mp-s2.html