Which of the following fields in the IPv6 header is decremented by 1 for each router that forwards the packet?
- A.Flow label
- B.Next header
- C.Traffic class
- D.Hop limit
eccouncil · 312-38 · Q425 · multiple_choice · topic_1
Which of the following fields in the IPv6 header is decremented by 1 for each router that forwards the packet?
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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