Question: In 2014, 4,278 IP addresses of zombie computers were used to flood a business with over one million packets per minute for about one hour. What is this type of attack called?

1. a salami attack
2. a DoS (Denial of Service) attack
3. a DDoS (Distributed Denial of Service) attack
4. a botnet attack

Answer: The correct answer of the above question is Option C:a DDoS (Distributed Denial of Service) attack