The type of attack designed to overload a server and render it unavailable is known as a DDoS attack (Distributed Denial of Service). In a DDoS attack, multiple compromised devices are used to flood a target server with a massive volume of traffic, significantly degrading its performance or completely shutting it down. The primary goal of such an attack is to disrupt services, causing inconvenience and potential financial loss to businesses. Preventative measures, including traffic monitoring and mitigation strategies, are essential to safeguard systems against DDoS attacks, ensuring continued availability and uptime.