An engineer must profile new servers that have been released recently and must identify running web services on nonstandard ports. Why is the probe returning no result?
A.
Port 80 or 443 is blocked by the firewall.
B.
Servers use IPs from the DHCP server.
C.
The policy Is allowing Initial collection of data.
D.
Listening ports can use a range between 1 and 65535.
D. Listening ports can use a range between 1 and 65535.
This is the most likely reason. Web services can run on any port within the range of 1 to 65535. If the probe is only scanning a limited range of ports (e.g., only well-known ports or a predefined subset), it will miss services running on nonstandard ports. To identify all running web services, the probe must scan the entire port range (1–65535).
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