Cisco CCNP Service Provider 350-501 Questions & Answers

• Question 51:

  DRAG DROP

  Drag and drop the OSPF and IS-IS Cisco MPLS TE extensions from the left to their functional descriptions on the right.

  Select and Place:

  

  Correct Answer:

  

• Question 52:

  DRAG DROP

  Drag and drop the descriptions from the left onto the corresponding OS types on the right.

  Select and Place:

  

  Correct Answer:

  

  IOS XE: It uses linux-based kernel It has a separate control plane IOS: It is monolithic It shares memory space

• Question 53:

  DRAG DROP Refer to the exhibit.

  

  An engineer wants to determine which paths are best, second best, third best, and fourth best. Drag and drop the peer addresses on the left to the corresponding BGP best-path selection order on the right.

  Select and Place:

  

  Correct Answer:

  

• Question 54:

  DRAG DROP

  Drag and drop the multicast concepts from the left onto the correct descriptions on the right.

  Select and Place:

  

  Correct Answer:

  

• Question 55:

  DRAG DROP

  Drag and drop the NAT64 descriptions from the left onto the correct NAT64 types on the right.

  Select and Place:

  

  Correct Answer:

  

  Stateful (It has 1: N translation, It uses address overloading, It conservers IPv4 addresses)

  Stateless (It is limited on the number of endpoints, It mandates IPv4-translatable IPv6 address allocation)

• Question 56:

  DRAG DROP

  Drag and drop each NAT64 description from the left onto the correct NAT64 type on the right.

  Select and Place:

  

  Correct Answer:

  

  Reference: https://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/enterprise-ipv6-solution/white_paper_c11-676277.html

• Question 57:

  DRAG DROP

  Drag and drop the functionalities from the left onto the correct target fields on the right.

  Select and Place:

  

  Correct Answer:

  

• Question 58:

  DRAG DROP

  Drag and drop the LDP features from the left onto the correct usages on the right.

  Select and Place:

  

  Correct Answer:

  

• Question 59:

  DRAG DROP

  Drag and drop the functions from the left onto the correct Path Computation Element Protocol roles on the right.

  Select and Place:

  

  Correct Answer:

  

  Path Computation Element (Calculates paths through the network, keeps TE topology database information, sends path status updates) Path computation Client (sends path calculation request, sends path creation request)

  Path Computation Element (PCE)

  Represents a software module (which can be a component or application) that enables the router to compute paths applying a set of constraints between any pair of nodes within the router's TE topology database. PCEs are discovered

  through IGP.

  Path Computation Client (PCC)

  Represents a software module running on a router that is capable of sending and receiving path computation requests and responses to and from PCEs. The PCC is typically an LSR (Label Switching Router).

  Rerefing to rfc4657 section-5.1.4

  https://tools.ietf.org/html/rfc4657#section-5.1.4

  The PCE facilitates path computation requests from Path Computation Clients (PCCs) to Path Computation Elements (PCEs). Path Computation Client requests path computation (calculation in our case) to Path Computation Element.

  -Rerefing to rfc4657 section-5.3.3 https://tools.ietf.org/html/rfc4657#section-5.3.3 If an LSP fails owing to the failure of a link or node that it traverses, a new computation request may be made to a PCE in order to repair the LSP. Since the PCC cannot know that the PCE's TED has been updated to reflect the failure network information, it is useful to include this information in the new path computation request. As a conclusion, PCC requests path calculation and includes update request in path calculation request.

  https://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r5-3/mpls/configuration/guide/b-mpls-cg53x-crs/b-mpls-cg53x- crs_chapter_0110.html#con_1279822

• Question 60:

  DRAG DROP

  Drag and drop the OSs from the left onto the correct descriptions on the right.

  Select and Place:

  

  Correct Answer: