ExamTopics Logo
Mail Us[email protected]
Menu
Cisco Discussions
exam questions

Exam 350-501 All Questions

View all questions & answers for the 350-501 exam
Go to Exam

Exam 350-501 topic 1 question 4 discussion

Actual exam question from Cisco's 350-501
Question #: 4
Topic #: 1
[All 350-501 Questions]

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.
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
by cerifyme85 at Sept. 11, 2023, 11:17 p.m.

Comments

Chosen Answer:
This is a voting comment (?). It is better to Upvote an existing comment if you don't have anything to add.
Switch to a voting comment New
Submit Cancel
ric859
7 months ago
D is correct. A link-state routing protocol is required because link information, such as available bandwidth is crucial for the operation of TE tunnels.
upvoted 1 times
...
cerifyme85
1 year, 9 months ago
Information distribution is a link state protocol, such as Open Shortest Path First (OSPF) or Intermediate System-to-Intermediate System (IS-IS), which is necessary to discover the topology. These protocols have been enhanced to carry additional information related to TE, such as bandwidth available and other related parameters. IS-IS uses new Type Length Values (TLVs) and OSPF uses Type 10 (Opaque) Link State Advertisements (LSAs) for this purpose. Other IGPs cannot be used to implement MPLS TE. https://community.cisco.com/t5/networking-knowledge-base/how-mpls-traffic-engineering-works/ta-p/3128593
upvoted 1 times
...
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.

SaveCancel