CompTIA Network+ Practice Test

What distinguishes a Distributed Denial of Service (DDoS) attack from a standard DoS attack?

1. DDoS attacks use a single source to overwhelm resources

2. DDoS attacks involve multiple computer systems to launch the attack

3. DDoS attacks typically require physical access to the network

4. DDoS attacks are always intentional

The correct answer is: DDoS attacks involve multiple computer systems to launch the attack

A Distributed Denial of Service (DDoS) attack is characterized by the use of multiple computer systems to overwhelm a target's resources, making it distinct from a standard Denial of Service (DoS) attack, which typically originates from a single source. In a DDoS attack, the attacker often harnesses a network of compromised systems, also known as a botnet, to generate a massive volume of traffic directed at the target, thereby increasing the likelihood of disrupting services. The involvement of multiple systems allows attackers to amplify their attack's magnitude, making it more difficult for the target to mitigate compared to a single-source DoS attack that can often be defended against more easily. This collective effort in a DDoS attack results in a greater potential for harm and disruption, as the attack can come from various geographical locations and diverse IP addresses, complicating detection and response efforts. In contrast, standard DoS attacks do not harness the power of multiple sources and are usually easier to trace and block. The other choices present either features that do not hold true for DDoS attacks or are more general in nature, illustrating the unique nature of DDoS in its coordinated, distributed approach.