In IPv4, fragmented datagrams fragment size should have first byte number divisible by .....

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

In IPv4, fragmented datagram’s fragment size should have first byte number divisible by ____

A	2
B	4
C	8
D	16

Explanation:

Detailed explanation-1: -When an IPv4 packet must be fragmented, the data must be divided on a multiple of eight octets . That is because the Fragment Offset field is three bits smaller than the Total Packet Length field, and 2^3 = 8 . The last fragment does not need to be a multiple of eight. RFC 791, Internet Protocol explains fragmentation.

Detailed explanation-2: -IP fragmentation is an Internet Protocol (IP) process that breaks packets into smaller pieces (fragments), so that the resulting pieces can pass through a link with a smaller maximum transmission unit (MTU) than the original packet size. The fragments are reassembled by the receiving host.

Detailed explanation-3: -The IP protocol allows a gateway to fragment a packet if it is too large to be transmitted. Fragmentation is at best a neces-sary evil; it can lead to poor performance or complete communication failure.

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