Calculate the size of the largest possible UDP message when using IPv4 and IPv6. . (Hint: the entire UDP message must fit in an IP datagram.)

What will be an ideal response?


Theoretically, the maximum allowable IP packet size (including header) is 65535 bytes. The
normal (without options) IP header is 5x4 bytes. The UDH header is 2x4 = 8 bytes. The total number
of bytes used for header will be IP header + UDP header = 20+8 = 28 bytes. So the maximum UDP
payload will be 65535 - 28= 65507 bytes.

Computer Science & Information Technology

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