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The _________ field determines the lifetime of IPv6 datagram

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The _________ field determines the lifetime of IPv6 datagram

(a) Hop limit

(b) TTL

(c) Next header

(d) Type of traffic

The question was posed to me in examination.

My doubt is from IPv6 topic in portion TCP/IP Protocol Suite of Computer Network

1 Answer

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The correct choice is (a) Hop limit

The explanation: The Hop limit value is decremented by one by a router when the datagram is forwarded by the router. When the value becomes zero the datagram is discarded. The field is 8-bits wide, so an IPv6 packet can live up to 255 router hops only.

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