CompTIA CASP+ Practice Test

To achieve an availability target of 99.9999%, which strategy is critical?

1. Implement regular backups

2. Ensure redundancy in systems and components

3. Limit access to essential personnel only

4. Conduct training for all employees

The correct answer is: Ensure redundancy in systems and components

Achieving an availability target of 99.9999%, also known as "six nines" availability, requires a robust strategy for minimizing downtime and ensuring that critical systems remain operational at all times. Ensuring redundancy in systems and components is essential because it involves having backup systems or components that can take over immediately in the event of a failure. This redundancy can exist at multiple levels, including hardware (such as servers, power supplies, and network components) and software (like load balancing and failover protocols). The implementation of redundancy helps to mitigate the risks associated with single points of failure. For instance, if one component fails, the redundant component can sustain operations without causing service disruption. This level of preparedness is crucial in environments where uptime is critical, as even a brief outage can have significant ramifications for business operations. While regular backups, limiting access, and training employees are important strategies for maintaining overall security and operational integrity, they do not directly address the immediate need for system availability in the event of a failure. Backups are more focused on data preservation and recovery, rather than real-time availability. Limiting access is primarily concerned with security, and while it is important, it does not enhance system uptime. Training employees, though valuable for ensuring staff