Certified Network Defender (CND) — Question 141

Which of the following fields in the IPv6 header is decremented by 1 for each router that forwards the packet?

Answer options

• A. Flow label
• B. Next header
• C. Traffic class
• D. Hop limit

Correct answer: D

Explanation

The correct answer is D, Hop limit, because this field is specifically designed to prevent packets from circulating indefinitely by decreasing its value with each hop. The other options—Flow label, Next header, and Traffic class—do not serve this purpose and remain unchanged during the forwarding process.