iSACA Cybersecurity Fundamentals Certification Practice Exam

In the context of cybersecurity, what does "Overlapping Redundancy" refer to?

1. A method of securing data at a single route

2. Creating duplicate pathways to ensure availability

3. A technique for simplifying network architecture

4. Reducing the number of security measures

The correct answer is: Creating duplicate pathways to ensure availability

Overlapping redundancy refers to the practice of establishing multiple pathways or connections within a network to ensure ongoing availability and reliability in the event that one pathway fails. This approach is fundamentally about increasing fault tolerance; if one pathway is compromised or faces an issue, traffic can be rerouted through another, keeping the system operational. Thus, overlapping redundancy is a crucial concept in creating resilient cybersecurity architectures, ensuring that critical data and systems remain accessible even during disruptions. This method contrasts sharply with creating data security at a single route, which does not provide the same level of resilience, as the loss of that single pathway would result in total inaccessibility. Additionally, while network architecture can be simplified for efficiency, overlapping redundancy typically complicates it due to the additional pathways involved. Lastly, reducing the number of security measures runs counter to the principles of redundancy; the goal of overlapping redundancy is to strengthen and enhance security, not to cut corners.