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The header length of an IPv6 datagram is ___________

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The header length of an IPv6 datagram is ___________

(a) 10bytes

(b) 25bytes

(c) 30bytes

(d) 40bytes

I had been asked this question by my school teacher while I was bunking the class.

My question comes from IPv6 topic in portion TCP/IP Protocol Suite of Computer Network

1 Answer

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Best answer
Correct answer is (d) 40bytes

The explanation is: IPv6 datagram has fixed header length of 40bytes, which results in faster processing of the datagram. There is one fixed header and optional headers which may or may not exist. The fixed header contains the mandatory essential information about the packet while the optional headers contain the optional “not that necessary” information.

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