Huawei Certified Network Associate – Routing and Switching (HCNA-RS, legacy) — Question 72

A network administrator uses the ping command to check for points of failure in the network.
Which protocols will be used during this process? (Choose two)

Answer options

• A. ICMP
• B. TCP
• C. ARP
• D. UDP

Correct answer: A, C

Explanation

The correct answer is A and C because the ping command relies on the Internet Control Message Protocol (ICMP) to send echo requests and receive echo replies. Address Resolution Protocol (ARP) is also involved in resolving IP addresses to MAC addresses, which can aid in identifying points of failure. TCP and UDP are transport layer protocols and are not directly used by the ping command.