What type of port might be used during a port-scanning attack?
A) Serial
B) Parallel
C) UDP
D) USB

Question

Quizplus · Accepted Answer

During a port-scanning attack, the attacker typically scans for open ports by sending connection requests to various ports on the target system. These connection requests are typically sent using the Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP). While TCP is a connection-oriented protocol that requires a three-way handshake for a successful connection, UDP is a connectionless protocol that does not require any such handshaking. As a result, UDP-based port-scanning attacks are more stealthy and harder to detect than TCP-based attacks. Therefore, choice C (UDP) is the best choice for this question.

What Type of Port Might Be Used During a Port-Scanning