Which practice supports downtime resilience by ensuring capacity during outages?

Which practice supports downtime resilience by ensuring capacity during outages?

• A. Preventive maintenance
• B. Redundancy
• C. Contingency planning
• D. All of the above

Answer: (D)

Downtime resilience means keeping operations running and maintaining capacity even when something goes wrong. Preventive maintenance reduces the likelihood of outages by keeping equipment and systems in good working order, so you’re less likely to lose capacity when you need it. Redundancy creates backup capacity by duplicating critical components or paths, so if one part fails, another can take over without interrupting service. Contingency planning defines the steps, resources, and roles needed to respond to outages, helping you restore or maintain capacity quickly. When these approaches are combined, they provide a comprehensive level of resilience, making all of the above the best choice.