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?

The correct answer is C. nmap 192.168.47.44 -Pn. By using -Pn, Nmap skips ICMP/ping host‑discovery and goes straight to a port scan. If the host is up, any open ports will respond - even if it’s blocking ping - whereas a truly down host won’t answer on any port, minimizing false “host down” results.

Troubleshooting

Question

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?

Options

Anmap 192.168.47.0/32
Bnetcat 192.168.47.44
Cnmap 192.168.47.44 -Pn
Dping -c 1 192.168.47.44

How the community answered

(27 responses)

A
4% (1)
B
7% (2)
C
78% (21)
D
11% (3)

Explanation

By using -Pn, Nmap skips ICMP/ping host‑discovery and goes straight to a port scan. If the host is up, any open ports will respond - even if it’s blocking ping - whereas a truly down host won’t answer on any port, minimizing false “host down” results.

Topics

#Network Troubleshooting#Nmap#Host Reachability#Command-line Tools

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