What is the size of the IP header checksum field?

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Multiple Choice

What is the size of the IP header checksum field?

Explanation:
In IPv4, the IP header checksum field is 16 bits long. This two-byte value is computed as the one's complement sum of all 16-bit words in the header, with the checksum field set to zero while calculating. The result is placed in this 16-bit field to help detect header corruption as packets traverse the network. Using 16 bits provides a good balance between error detection capability and keeping the header compact. Other sizes like 8-bit, 32-bit, or 64-bit aren’t used for this field in IPv4 headers.

In IPv4, the IP header checksum field is 16 bits long. This two-byte value is computed as the one's complement sum of all 16-bit words in the header, with the checksum field set to zero while calculating. The result is placed in this 16-bit field to help detect header corruption as packets traverse the network. Using 16 bits provides a good balance between error detection capability and keeping the header compact. Other sizes like 8-bit, 32-bit, or 64-bit aren’t used for this field in IPv4 headers.

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