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Directions (Q96–100): An IP datagram has arrived with the following partial header information (in hexadecimal): 45000054 00030000 2006…

What is the header size?

Pick an option to check yourself, or open the answer below.

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Correct answer: B. 20 bytes

Explanation

HLEN = 5 (second hex digit), so the header is 5 × 4 = 20 bytes.

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