CERTIFIED-IN-CYBERSECURITY Question #433: Real Exam Question with Answer & Explanation

Question

Which of the following is TRUE about Denial of Service (DoS)?

Options

• AIt is a type of attack used to disrupt normal operations
• BIt is a type of attack used to gain access to a system
• CIt is a type of attack used to bypass authentication
• DIt is a type of attack used to prevent encryption

Explanation

A Denial of Service (DoS) attack is a cyber attack in which the perpetrator attempts to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting the services of a host connected to the Internet (see ISC2 Study Guide, Chapter 4, Module 2). For example, an attacker could saturate the target machine with external communication requests, making it unable to respond to legitimate traffic or making it respond so slowly that it becomes unavailable. The remaining options do not accurately describe a DoS attack. Gaining access to a system is not the primary goal of a DoS attack, but rather a potential side effect in some cases. Bypassing authentication is not a characteristic of a DoS attack, but rather an entirely different type of attack, often referred to as a "bypass attack" or "authentication attack". Finally, preventing encryption is also not a characteristic of a DoS attack.

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