Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) — Question 512

What is a characteristic of an MPLS LSP tunnel?

Answer options

• A. bidirectional tunnel
• B. secured bidirectional tunnel
• C. hop-by-hop tunnel
• D. unidirectional tunnel

Correct answer: D

Explanation

The correct answer is D, as MPLS LSP tunnels are designed to be unidirectional, meaning data flows in a single direction from the source to the destination. Options A and B are incorrect because they imply bidirectionality, which does not apply to MPLS LSP tunnels. Option C is also incorrect since it does not accurately describe the nature of MPLS LSP tunnels.