Cisco CCNP Service Provider 350-501 Questions & Answers

• Question 431:

  Refer to the exhibit.

  

  After implementing a new design for the network, a technician reviews the pictures CLI output as part of the MOP. Which two elements describe what the technician can ascertain from the ImpNull output? (Choose two.)

  A. Ultimate Hop Popping is in use for the prefix displayed.

  B. Penultimate Hop Popping is in use for the prefix displayed.

  C. Label 0 is used for the prefix displayed, but will not be part of the MPLS label stack for packets destined for 192.168.10.10.

  D. Label 3 is in use for the prefix displayed and will be part of the MPLS label stack for packets destined for 192.168.10.10.

  E. Label 0 is used for the prefix displayed and will be part of the MPLS label stack for packets destined for 192.168.10.10.

  Correct Answer: BD

  Implicit null is by default which means penultimate router should only send IP packet thus it pops the label (popping the label known as PHP and this is done to reduce the load on last hop router)

  References: https://community.cisco.com/t5/mpls/implicit-null-and-explicit-null/td-p/1496792 https://networkzblogger.com/2017/03/21/mpls-explicit-and-implicit-null-label/

• Question 432:

  Refer to the exhibit.

  

  With which router does IOSXRV-1 have LDP session protection capability enabled but session hold up is not active?

  A. 192.168.0.4

  B. 192.168.0.5

  C. 192.168.0.1

  D. 192.168.0.3

  Correct Answer: D

• Question 433:

  Refer to the exhibit.

  

  A network operator working for service provider with an employee id: 1234:56:789 applied this configuration to a router. Which additional step should the engineer use to enable LDP?

  A. Enable MPLS LDP on the interface.

  B. Disable Cisco Express Forwarding globally.

  C. Delete the static router ID.

  D. Configure the both keyword to enable LDP globally.

  Correct Answer: A

• Question 434:

  Which utility can you use to locate MPLS faults?

  A. MPLS LSP ping

  B. QoS

  C. MPLS traceroute

  D. EEM

  Correct Answer: C

• Question 435:

  When configuring traffic engineering tunnels in Cisco MPLS core network, you see the traffic is not tacking the expected path in the core. Which command do you use to quickly check path of a TE tunnel?

  A. traceroute

  B. show mpls traffic-engineering tunnels

  C. Ping

  D. traceroute mpls ipv4

  Correct Answer: D

• Question 436:

  Refer to the exhibit.

  

  When implementing an LDP protocol, an engineer experienced an issue between two directly connected routers and noticed that no LDP neighbor exists for 1.1.1.1. Which factor should be the reason for this situation?

  A. LDP needs to be enabled on the R2 loopback interface.

  B. LDP needs to be enabled on the R2 physical interface.

  C. R2 does not see any hellos from R1.

  D. R2 sees the wrong type of hellos from R1.

  Correct Answer: B

• Question 437:

  In an MPLS network, which protocol can be used to distribute a Segment Prefix?

  A. LDP

  B. EIGRP

  C. OSPF

  D. RSVP-TE

  Correct Answer: C

• Question 438:

  Refer to the exhibit

  

  Which effect of this configuration is true?

  A. R1 can support a peer that is configured for LDP SSO/NSF as the peer recovers from an outage.

  B. R1can support a graceful restart operation on the peer, even if graceful restart is disabled on the peer.

  C. R1 can failover to any peer.

  D. R1 can failover only to a peer that is configured for LDF SSO/NSF.

  Correct Answer: A

  Reference: https://www.cisco.com/en/US/docs/general/Test/kwoodwar/fsgr29s.html

• Question 439:

  You are testing the capabilities of MPLS OAM ping. Which statement is true?

  A. An LSP is not required for the reply to reach the ingress MPLS router.

  B. An LSP breakage results in the ingress MPLS router never receiving any reply.

  C. MPLS OAM ping works solely with P2P LSPs.

  D. MPLS OAM ping works solely with Cisco MPLS TE.

  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 440:

  How can shared services in an MPLS Layer 3 VPN provide Internet access to the Customers of a central service provider?

  A. Static routes on CE routers allow route leakage from a PE global routing table.

  B. The CE router can establish a BGP peering to a PE router and use the PE device to reach the Internet.

  C. The customer VRF uses route targets to import and export routes to and from a shared services VRF.

  D. Route distinguishers are used to identify the routes that CEs can use to reach the Internet.

  Correct Answer: C

  Reference: https://community.cisco.com/t5/service-providers-documents/providing-internet-access-for-mpls-l3-vpns/ta-p/3109924