Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) — Question 277

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?

Answer options

• 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.

Correct answer: D

Explanation

The correct answer is D because listening ports can indeed span from 1 to 65535, meaning the probe could potentially identify services on nonstandard ports within that range. Option A is incorrect as the probe's focus is on nonstandard ports, not the standard ones. Option B does not impact the ability to discover services on specific ports, and Option C is irrelevant since it pertains to initial data collection rather than the operational status of web services.