Cisco CCNP Service Provider 350-501 Questions & Answers

• Question 491:

  Refer to the exhibit

  

  BGPsec is implemented on R1, R2, R3, and R4. BGP peering is established between neighboring autonomous systems. Which statement about implementation is true?

  A. BGP updates from the iBGP peers are appended with a community of local-as.

  B. BGP updates from the all BGP peers are appended with a community of no-export.

  C. BGP updates from the eBGP peers are appended with an additional AS path value that is statically set by the domain administrator.

  D. BGP updates from the eBGP peers are appended with a BGPsec attribute sequence that includes a public key hash and digital signature.

  Correct Answer: D

• Question 492:

  Which component is similar to an EVPN instance?

  A. router distinguisher

  B. MPLS label

  C. IGP router ID

  D. VRF

  Correct Answer: D

• Question 493:

  Why do Cisco MPLS TE tunnels require a link-state routing protocol?

  A. The link-state database provides segmentation by area, which improves the path-selection process.

  B. The link-state database provides a data repository from which the tunnel endpoints can dynamically select a source ID.

  C. Link-state routing protocols use SPF calculations that the tunnel endpoints leverage to implement the tunnel.

  D. The tunnel endpoints use the link-state database to evaluate the entire topology and determine the best path.

  Correct Answer: D

• Question 494:

  Refer to the exhibit

  

  P3 and PE4 are at the edge of the service provider core and serve as ABR routers. Aggregation areas are on either side of the core. Which statement about the architecture is true?

  A. To support seamless MPLS, the BGP route reflector feature must be disabled.

  B. If each area is running its own IGP, BGP must provide an end-to-end MPLS LSP.

  C. If each area is running its own IGP, the ABR routers must redistribute the IGP routing table into BGP.

  D. To support seamless MPLS, TDP must be used as the label protocol.

  Correct Answer: B

  Reference: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9600/software/release/16-12/configuration_guide/mpls/b_1612_mpls_9600_cg/configuring_seamless_mpls.html

• Question 495:

  A router is advertising multiple networks to its BGP neighbor in AS 5200 with peer IP address 1.1.1.1. Which configuration must be applied so that the router permits updates only for networks with a prefix mask length less than or equal to 21?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: D

• Question 496:

  Which feature describes the weight parameter for BGP path selection?

  A. Its value is local to the router

  B. Its value is set either locally or globally.

  C. Its default value is 0.

  D. Its value is global to the router.

  Correct Answer: A

• Question 497:

  

  Refer to the exhibit. ISP_A is about to launch a new internet service. ISP_A is already providing MPLS VPN Layer 3 services to Customer_A and Customer_B, which are connected to ISP_A via OSPF. A network engineer completed the BGP and VRF configurations on R2 to support the new internet service. Which additional action completed the launch?

  A. Implement the BGP routing protocol in the customer VRFs on R1 and R2

  B. Import route-target 62:101 into the customer VRFs on R1 and R3.

  C. Enable the route-replicate command under the customer VRFs on R1 and R2

  D. Activate NAT CE in the customer VRFs on R1. R2. and R3.

  Correct Answer: A

• Question 498:

  According to RFC5305 on IS-IS extensions for traffic engineering, what is the 4-octet sub- TLV type 10 of extended IS-IS reachability TLV type 22?

  A. TE default metric

  B. maximum reservable link bandwidth

  C. administrative group (color)

  D. IPv4 neighbor address

  Correct Answer: B

• Question 499:

  

  Refer to the exhibit. An engineer configured several network devices to run REST APIs. After testing, the organization plans to use REST APIs throughout the network to manage the network more efficiently. What is the effect if this script?

  A. It returns an AAA users with the last name CiscoTest.

  B. It creates a class map named aaauser with traffic tagged from AAA.

  C. It queries the local database to find a user named aaaUser.Json

  D. It adds the user CiscoTest to the AAA database located at 192.168.201.10.

  Correct Answer: A

• Question 500:

  

  Refer to the exhibit. A network engineer must deny access from spoofed addresses to the LAN. The edge router currently has two active BGP sessions established with Tier 1 ISP_A. Due to asymmetric routing, no ACL is configured on either interface. Which two configurations must the engineer perform on the edge router to complete the task? (Choose two.)

  A. ip verify unicast source reachable-via tx under FA0/0

  B. ip verify unicast source reachable-via under FA0/1

  C. ip verify unicast source reachable-via any under FA0/1

  D. ip verify unicast source reachable-via both under FA0/0

  E. ip verify unicast source reachable-via any under FA0/0

  Correct Answer: CE