# 312-38 — Question 425

**Type:** multiple_choice
**Topics:** topic_1

## Question

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

## Correct Answer

_See scenario._

## Explanation

The hop limit field in the IPv6 header is decremented by 1 for each router that forwards a packet. The packet is discarded when the hop limit field reaches zero.
Answer option B is incorrect. Next header is an 8-bit field that specifies the next encapsulated protocol.
Answer option A is incorrect. Flow label is a 20-bit field that is used for specifying special router handling from source to destination for a sequence of packets.
Answer option C is incorrect. Traffic class is an 8-bit field that specifies the Internet traffic priority delivery value.

**Reference:** examtopics_answer_description

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Source: https://hiexam.net/q/eccouncil/312-38/425  
Practice (tracked): https://hiexam.net/study/312-38/practice