Which option performs a UDP Ping to ports 100 and 90?

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Multiple Choice

Which option performs a UDP Ping to ports 100 and 90?

Explanation:
UDP Ping probes in Nmap send UDP packets to specified ports to check if a host is alive, especially useful when ICMP is blocked. To target particular ports, you specify the UDP ping option followed by a comma-separated list of ports. Using -PU100,90 sends UDP probes to ports 100 and 90, making it the exact method for performing a UDP Ping to those ports. The other options don’t fit this purpose: -PS100,90 uses TCP SYN probes to those ports, not UDP. -PI is an ICMP-based ping method, not UDP. -sU turns on a UDP port scan, which scans UDP ports for open services rather than performing a focused UDP ping to specific ports.

UDP Ping probes in Nmap send UDP packets to specified ports to check if a host is alive, especially useful when ICMP is blocked. To target particular ports, you specify the UDP ping option followed by a comma-separated list of ports. Using -PU100,90 sends UDP probes to ports 100 and 90, making it the exact method for performing a UDP Ping to those ports.

The other options don’t fit this purpose: -PS100,90 uses TCP SYN probes to those ports, not UDP. -PI is an ICMP-based ping method, not UDP. -sU turns on a UDP port scan, which scans UDP ports for open services rather than performing a focused UDP ping to specific ports.

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