Huawei Certified ICT Associate – Data Center Network (HCIA-DCN) — Question 35

What is the protocol number of OSPF at the network layer?

Answer options

• A. 0
• B. 1
• C. 6
• D. 89

Correct answer: D

Explanation

The correct answer is D, as OSPF (Open Shortest Path First) is assigned the protocol number 89 at the network layer. Options A, B, and C are incorrect as they do not correspond to OSPF; 0, 1, and 6 represent other protocols, such as ICMP and TCP.