Why is redundancy important in telemetry system design?

• A. Redundancy improves reliability; hot/cold spares ensure availability during failures; critical components have duplicate paths.
• B. Redundancy increases latency.
• C. Redundancy reduces data rate.
• D. Redundancy is only used for power supply.

Answer: (A)

Redundancy in telemetry design centers on reliability and continuous data availability. By having backups like hot spares that are ready to take over immediately and cold spares that can be brought online when needed, the system minimizes downtime and keeps data flowing even when a component fails. Duplicate paths for critical components mean that if one route goes down, another path can carry the data, preventing a loss of telemetry due to a single point of failure. This robustness is crucial in environments where timely and accurate data is essential for monitoring and decision-making. The other statements miss the core purpose: redundancy isn’t primarily about increasing latency or reducing data rate, and it isn’t limited to power supplies—it applies to sensors, processing, and communication paths to maintain uptime.