The correct answer is A distributed denial-of-service (DDoS) attack is a malicious attempt to disrupt the normal traffic of a targeted server, service, or network by overwhelming the target or its surrounding infrastructure with a flood of Internet traffic.Distributed Denial of Service (DDoS) is a cyber-attack.Distributed denial-of-service attacks target websites and online services.The aim is to overwhelm them with more traffic than the server or network can accommodate.The goal is to render the website or service inoperable.