Which of the following is the main difference between a dos attack and a ddos attack?

Answer: The DDoS attack uses zombie computers

Explanation:

A DDoS attack uses zombie computers to overload a target's server with traffic in order to crash the system or take it offline. In contrast, a DOS attack utilizes bots that send requests to the target computer in such large numbers that it can slow or halt normal operations.

Both attacks are designed to cause disruption and damage, but they have different goals. A DOS attack is designed to disrupt an individual machine while a DDoS attack can ultimately damage or take down a website or server.