Which utility sends ICMP Echo requests to test connectivity?

Which utility sends ICMP Echo requests to test connectivity?

• A. Ping
• B. Tools
• C. Registration Table
• D. Station Mode

Answer: (A)

Testing connectivity with ICMP Echo requests is about verifying that a path to another host is reachable and measuring response time. The Ping utility does exactly this: it sends ICMP Echo Request packets to the target and waits for ICMP Echo Reply responses. When replies come back, you gain confirmation that the route is reachable and you can gauge latency and loss from the round-trip times. If replies don’t arrive, it points to potential issues like a down host, a blocked ICMP path, or network congestion. The other options aren’t used for this specific diagnostic: a generic term like Tools isn’t a command, Registration Table isn’t about reachability, and Station Mode refers to a wireless operation mode rather than a diagnostic tool.

Testing connectivity with ICMP Echo requests is about verifying that a path to another host is reachable and measuring response time. The Ping utility does exactly this: it sends ICMP Echo Request packets to the target and waits for ICMP Echo Reply responses. When replies come back, you gain confirmation that the route is reachable and you can gauge latency and loss from the round-trip times. If replies don’t arrive, it points to potential issues like a down host, a blocked ICMP path, or network congestion. The other options aren’t used for this specific diagnostic: a generic term like Tools isn’t a command, Registration Table isn’t about reachability, and Station Mode refers to a wireless operation mode rather than a diagnostic tool.