(ISC)2 Certified in Cybersecurity Practice Exam

Which process continually seeks to enhance system reliability through varied functionality?

1. Load Balancing

2. System Integration

3. Fault Tolerance

4. Data Duplication

The correct answer is: Fault Tolerance

The process that continually seeks to enhance system reliability through varied functionality is fault tolerance. Fault tolerance refers to the ability of a system to continue operating properly in the event of a failure of some of its components. It is achieved through redundancy, where critical components or functions are duplicated, allowing the system to maintain its performance and reliability even when one or more components fail. By incorporating varied functionality, a fault-tolerant system can handle unexpected problems, ensuring a consistent user experience and minimizing downtime. In the context of reliability, fault tolerance is essential in environments where maintaining service availability is critical, such as in data centers and mission-critical applications. This focus on resilience and continuous operation under adversity distinguishes fault tolerance from other processes. Load balancing, although important for distribution of workloads and optimizing resource use, primarily aims to manage incoming traffic rather than enhancing reliability through functional variation. System integration involves combining different systems or components but does not inherently include mechanisms to handle failures or improve reliability continuously. Data duplication focuses on storing copies of data for backup and recovery purposes, which is a form of disaster recovery rather than a continuous reliability enhancement strategy.