CompTIA Linux+ (XK0-005) — Question 254

A diagnostic tool reports a “host seems down” event for a server with an IP address of 192.168.47.44. Which of the following commands should the administrator use to confirm the host down event?

Answer options

• A. nmap 192.168.47.0/32
• B. netcat 192.168.47.44
• C. nmap 192.168.47.44 -Pn
• D. ping -c 1 192.168.47.44

Correct answer: D

Explanation

The correct answer is D because the ping command checks the network connectivity to the specified host and will return a response if the host is online. Options A and C are nmap commands that may not provide immediate confirmation of host status without additional parameters, and option B uses netcat, which is not primarily used for checking host availability.