Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) — Question 332

What is the total length of an MPLS header?

Answer options

• A. 16 bits
• B. 20 bits
• C. 28 bits
• D. 32 bits

Correct answer: D

Explanation

The correct answer is D, as the MPLS header is 32 bits long, which includes the label, experimental bits, and the TTL field. Options A, B, and C are incorrect because they do not accurately represent the total size of the MPLS header.