Cisco CCNP Service Provider 350-501 Questions & Answers

• Question 451:

  Refer to the exhibit

  

  Router R1 and its peer R2 reside on the same subnet in the network. If an engineer implements this configuration to R1, how does it make connections to R2?

  A. R1 establishes TCP connections that are authenticated with a clear-text password.

  B. R1 establishes UDP connections that are authenticated with an MD5 password.

  C. R1 establishes UDP connections that are authenticated with a clear-text password.

  D. R1 establishes TCP connections that are authenticated with an MD5 password.

  Correct Answer: D

• Question 452:

  Refer to the exhibit.

  

  On R1, which output does the show isis neighbors command generate?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: A

• Question 453:

  Which two tasks must you perform when you implement LDP NSF on your network? (Choose two.)

  A. Enable NSF for BGP.

  B. Implement direct connections for LDP peers.

  C. Enable NSF for EIGRP.

  D. Disable Cisco Express Forwarding.

  E. Enable NSF for the link-state routing protocol that is in use on the network.

  Correct Answer: AE

  Again just repeating what people said before.

  A you do have to enable NSF for BGP.

  cant be B because it works for connected and non-connected peers.

  LDP NSF works with LDP sessions between directly connected peers and with peers that are not directly connected (targeted sessions).

  https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_ha/configuration/15-sy/mp-ha-15-sy-book/mp-ldp-grace-nsfsso.html

• Question 454:

  Refer to the exhibit:

  

  R1 and R2 are directly connected with Fast Ethernet interfaces and have the above configuration applied OSPF adjacency is not formed. When the are seen: debug ip ospf hello command is issued on R1, these log messages

  

  Which command can be configured on routers R1 and R2 on f0/0 interfaces to form OSPF adjacency?

  A. ip ospf network point-to-multipoint non-broadcast

  B. ip ospf network non-broadcast

  C. ip ospf network broadcast

  D. ip ospf network point-to-point

  Correct Answer: D

  Reference: https://community.cisco.com/t5/routing/ospf-point-to-point-links/td-p/1913398

• Question 455:

  Refer to the exhibit.

  

  Which configuration prevents the OSPF neighbor from establishing?

  A. default-metric

  B. duplex

  C. network statement

  D. mtu

  Correct Answer: D

• Question 456:

  Which three OSPF parameters must match before two devices can establish an OSPF adjacency? (Choose three.)

  A. IP address

  B. subnet mask

  C. interface cost

  D. process ID

  E. area number

  F. hello timer setting

  Correct Answer: BEF

• Question 457:

  Refer to the exhibit

  

  Which condition must be met by the OSPF peer of router R1 before the two devices can establish communication?

  A. The OSPF peer must use clear-text authentication.

  B. The OSPF peer must be configured as an OSPF stub router.

  C. The interface on the OSPF peer may have a different key ID, but it must use the same key value as the configured interface.

  D. The interface on the OSPF peer must use the same key ID and key value as the configured interface.

  Correct Answer: D

  Reference: https://networklessons.com/ospf/how-to-configure-ospf-md5-authentication

• Question 458:

  Refer to the exhibit

  

  Which statement about the neighbor statements for 192.168.1.1 is true?

  A. The router sends BGP labels for its prefixes to this peer.

  B. The router must have TDP configured for the send-label command to operate.

  C. The neighbor router receives at least four labels from this router.

  D. The router sends only a label for the prefix for Loopback0.

  Correct Answer: A

• Question 459:

  Refer to the exhibit.

  

  Which statement about the status of the neighbor relationship between R1 and R2 is true?

  A. The neighbor relationship is down because the two routers are configured with different area types.

  B. The neighbor relationship is down because the two routers are in the same subnet.

  C. The neighbor relationship is up because R2 is level 1 and Ievel 2 router.

  D. The neighbor relationship is down because R2 is operating as a Level 1 router and the two routers are in different areas.

  Correct Answer: D

  For the answer A, we have 3 cases when they have same area type:

  1.

  both are in area type 1 -> it will not work because different area (0011 vs 0022)

  2.

  both are in area type 2 -> it will work because area difference does not matter

  3.

  both are in area type1-2 -> it will work because area difference does not matter So the logic tells us that case 1 will invalidate this answer. The remaining vaild answer is D

• Question 460:

  A customer of an ISP requests support to setup a BGP routing policy. Which BGP attribute should be configured to choose specific BGP speakers as preferred points for the customer AS?

  A. lowest multi-exit discriminator

  B. highest local preference outbound

  C. lowest local preference inbound

  D. highest local preference inbound

  Correct Answer: D