Microsoft Azure Architect Technologies (AZ-300) Practice Exam

DDoS protection at the perimeter layer is an example of which security principle?

1. Availability

2. Confidentiality

3. Integrity

4. Authentication

The correct answer is: Availability

DDoS (Distributed Denial of Service) protection is particularly focused on maintaining the availability of services in the face of malicious traffic aimed at overwhelming a system. This aligns with the principle of availability, which emphasizes ensuring that systems, services, and data are accessible to authorized users when needed. The goal of DDoS protection is to prevent an attack from impacting the functionality and performance of applications, thus safeguarding against service disruption that could render them unavailable. The other principles, such as confidentiality, integrity, and authentication, serve different purposes within security. Confidentiality is about protecting sensitive information from unauthorized access, integrity ensures that data is accurate and unaltered, and authentication verifies the identity of users or systems seeking access. While all these principles are crucial for a holistic security approach, in the context of mitigating DDoS attacks specifically, the emphasis is on ensuring that users can access services as intended, thereby directly supporting the principle of availability.