Which tool is used to detect listening ports to find information about the nature of services running on the target machine?

Which tool is used to detect listening ports to find information about the nature of services running on the target machine?

• A. Traceroute
• B. Cheops
• C. Port scanners
• D. Packet flooding

Answer: (C)

Detecting listening ports to learn what services are running on a target is done with port scanners. A port scanner probes a range of ports on the host to see which are open or closed, and an open port typically indicates a service is listening there. By mapping these open ports, you infer which services are likely running (and often their versions if the scanner can perform banner grabbing or version probing). This helps build a profile of the target’s exposed services and potential vulnerabilities. Traceroute, by contrast, reveals the path packets take to reach a host, not what services are running on that host. Cheops is a network monitoring tool used for discovering and monitoring devices, not specifically for identifying listening ports and services. Packet flooding is a DoS technique used to overwhelm a target, not for discovering services.

Detecting listening ports to learn what services are running on a target is done with port scanners. A port scanner probes a range of ports on the host to see which are open or closed, and an open port typically indicates a service is listening there. By mapping these open ports, you infer which services are likely running (and often their versions if the scanner can perform banner grabbing or version probing). This helps build a profile of the target’s exposed services and potential vulnerabilities.

Traceroute, by contrast, reveals the path packets take to reach a host, not what services are running on that host. Cheops is a network monitoring tool used for discovering and monitoring devices, not specifically for identifying listening ports and services. Packet flooding is a DoS technique used to overwhelm a target, not for discovering services.