(ISC)2 Certified in Cybersecurity Practice Exam

What strategy employs multiple systems to safeguard against service failure?

1. Disaster Recovery

2. High Availability

3. Redundant Systems

4. Load Testing

The correct answer is: High Availability

High Availability is a strategy designed to ensure that systems remain operational and accessible, particularly in the face of failures or maintenance activities. This approach involves the use of multiple systems or components that work in tandem to provide continuous service. The core idea is that by having redundant systems, if one component fails, the others can take over, maintaining service availability and minimizing downtime. This strategy is critical in environments where uptime is vital, such as in financial services or healthcare, where even brief interruptions can have significant consequences. High Availability configurations can include techniques like clustering, failover systems, and load balancing, which collectively enhance service reliability. The other strategies tend to focus on different aspects of IT service management. Disaster Recovery emphasizes recovering from catastrophic events and restoring systems after failure rather than ongoing service continuity. Redundant Systems specifically focuses on having backup components but doesn't capture the ongoing management of ensuring services remain available as High Availability does. Load Testing relates more to assessing performance and capacity under various conditions rather than specifically guarding against service failure.