Huawei Certified ICT Associate – Data Center Network (HCIA-DCN) — Question 137

Which of the following cannot be the length of an IPv4 packet header?

Answer options

• A. 32B
• B. 64B
• C. 60B
• D. 20B

Correct answer: A

Explanation

The IPv4 packet header has a minimum length of 20 bytes and can extend up to a maximum of 60 bytes. Therefore, 32B is not a valid length for an IPv4 packet header, while 64B exceeds the maximum allowable size.