Which of the following types of attacks is targeting a Web server with multiple compromised computers that are simultaneously sending hundreds of FIN packets with spoofed IP source IP addresses?

A Distributed Denial of Service (DDoS) attack is characterized by multiple compromised systems (bots) simultaneously sending a flood of traffic, such as a high volume of FIN packets with spoofed IP addresses, to a target web server. This overwhelming traffic consumes the server's resources, preventing legitimate users from accessing the service and causing a denial of service.

An evasion attack attempts to bypass security controls without being detected, which is distinct from overwhelming a server with traffic to deny service.

An insertion attack involves injecting malicious data into a legitimate data stream to trick a security device, not flooding a server with FIN packets.

A dictionary attack is a type of brute-force attack that tries common passwords from a dictionary to gain unauthorized access, completely unrelated to network traffic flooding.