Which term refers to a huge network of compromised devices used to perform distributed denial-of-service attacks?

• A. Bots
• B. Hit-list Scanning
• C. Botnet
• D. Local Subnet Scanning

Answer: (C)

A botnet is a large network of compromised devices that are under the control of an attacker to carry out coordinated actions like distributed denial-of-service attacks. Each infected machine becomes a bot, and together they form the botnet, allowing the attacker to flood a target from many different sources simultaneously. This distributed approach makes it harder to stop the attack because filtering out one source still leaves many others driving traffic. In contrast, a bot is just a single compromised device, not the entire network; and hit-list scanning or local subnet scanning are reconnaissance techniques used to identify targets, not to execute coordinated attacks via a network of bots.