Huawei Certified ICT Associate – Data Center Network (HCIA-DCN) — Question 66

The last option field (option) of an IPv4 packet is a length-variable and optional field. What is the maximum length of this field?

Answer options

• A. 40B
• B. 10B
• C. 20B
• D. 60B

Correct answer: A

Explanation

The correct answer is A, as the maximum length for the option field in an IPv4 packet is 40 bytes. The other options (10B, 20B, and 60B) do not represent valid lengths for this field, with 60B exceeding the maximum limit defined for IPv4 options.