What does reliability mean in computing?

• A. A program/device will work the same every time
• B. It uses minimal memory
• C. It runs without any code
• D. It never needs updates

Answer: (A)

Reliability means a system performs its intended function consistently and without frequent failures. When software or hardware is reliable, it behaves predictably under the same conditions, so you can trust that it will work the same way each time you use it and won’t crash unexpectedly. This isn’t about memory usage, not about running without code, and not about never needing updates—updates relate to fixes and improvements, not the core notion of dependable, repeatable operation. In short, reliability is about low fault rate and dependable results you can rely on across repeated uses.