Exam 350-501 topic 1 question 155 discussion

Answer is: 1-1; 2-2; 3-4; 4-3; 5-5. - 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.

if an event is triggered that requires the computation of a set of paths, the PCC sends a path computation request to the PCE ([RFC5440], Section 4.2.3)

Check this: Path computation element (PCE) • Computes network paths (topology, paths, etc.) • Stores TE topology database • May initiate path creation • Stateful - stores path database including constraints Path computation client (PCC): • May send path computation requests to PCE • May send path state updates to PCE https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2020/pdf/BRKSPG-2305.pdf

It looks correct as it is

these BS cisco question exams I cant stand them LOL. gotta go what this answer says

I agreed, for I dont know the answer.

I agree, D&D is correct

Additionally Page 38 at https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2018/pdf/BRKSPG-2210.pdf

I confirm the answers are correct!

I verified the answers against Juniper CLOUD curriculum and the RFC. I’m positive about the given answers. I vote for this D&D as to be correct.

None of these terms match those defined in the RFC for PCEP, or any Cisco, Juniper or Huawei documentation.