The term that describes the ability to maintain service despite failures is:

The term that describes the ability to maintain service despite failures is:

• A. Redundancy
• B. Backups
• C. Encryption
• D. Simulation

Answer: (A)

Redundancy is the practice of building in spare components or alternate paths so a system can keep operating even if one part fails. This creates fault tolerance and high availability, because if a server, network link, or power supply goes down, another one immediately takes over with little or no downtime. For example, having multiple servers behind a load balancer, or duplicate power supplies and network connections, keeps the service running even during failures. Backups, while essential for data recovery after an incident, don’t automatically maintain service in real time. Encryption protects data confidentiality, not system continuity. Simulation is about testing and modeling how a system behaves, not about ensuring uninterrupted service. So the term that describes maintaining service despite failures is redundancy.

Redundancy is the practice of building in spare components or alternate paths so a system can keep operating even if one part fails. This creates fault tolerance and high availability, because if a server, network link, or power supply goes down, another one immediately takes over with little or no downtime. For example, having multiple servers behind a load balancer, or duplicate power supplies and network connections, keeps the service running even during failures. Backups, while essential for data recovery after an incident, don’t automatically maintain service in real time. Encryption protects data confidentiality, not system continuity. Simulation is about testing and modeling how a system behaves, not about ensuring uninterrupted service. So the term that describes maintaining service despite failures is redundancy.