Which type of attack is characterized by overwhelming a system with traffic to disrupt services?

• A. Denial of service attack
• B. Man-in-the-middle attack
• C. Social engineering attack
• D. SQL injection attack

Answer: (A)

A denial of service attack is characterized by overwhelming a system with excessive traffic, aiming to disrupt services and render them unavailable to legitimate users. This type of attack typically involves a single system or multiple systems being directed to flood a target with requests, effectively exhausting its resources—such as bandwidth or processing power—leading to performance degradation or total service disruption. This action can prevent users from accessing the services or applications that rely on the affected system, highlighting the critical nature of cybersecurity measures that organizations need to implement to mitigate such risks.

In contrast, other types of attacks, such as man-in-the-middle attacks, involve intercepting communications between two parties; social engineering attacks leverage human interaction to manipulate individuals into divulging confidential information; and SQL injection attacks exploit vulnerabilities in applications that interact with databases to manipulate or access data improperly. Each of these attacks has different methodologies and targets, distinctly separating them from the straightforward objective of a denial of service attack, which focuses solely on disrupting service availability.