Which process is described as listing the open ports and services by sending a sequence of messages to identify the services on the target computer?

Which process is described as listing the open ports and services by sending a sequence of messages to identify the services on the target computer?

• A. Network Scanning
• B. Port Scanning
• C. Vulnerability Scanning
• D. Push (PSH)

Answer: (B)

Identifying open ports and the services listening on them by sending a sequence of messages is port scanning. The goal is to probe the target to see which ports are open or filtered and to infer which service is bound to each open port, often using banner grabbing or protocol-specific probes to identify the service. This is more focused than general network scanning, which includes discovering devices and mapping networks, and different from vulnerability scanning, which looks for known weaknesses after services are identified. Push (PSH) is just a TCP flag used in data transmission and isn’t a scanning method, so it doesn’t fit here.

Identifying open ports and the services listening on them by sending a sequence of messages is port scanning. The goal is to probe the target to see which ports are open or filtered and to infer which service is bound to each open port, often using banner grabbing or protocol-specific probes to identify the service. This is more focused than general network scanning, which includes discovering devices and mapping networks, and different from vulnerability scanning, which looks for known weaknesses after services are identified. Push (PSH) is just a TCP flag used in data transmission and isn’t a scanning method, so it doesn’t fit here.