Difficulty: Easy
Correct Answer: All of the above
Explanation:
Introduction / Context:
Backups are a cornerstone of business continuity and disaster recovery. When hardware fails, data becomes corrupt, or systems crash, organizations rely on backup and restore procedures to return to a known good state quickly and safely, minimizing downtime and data loss (RTO/RPO objectives).
Given Data / Assumptions:
Concept / Approach:
A comprehensive backup strategy covers multiple layers: data (databases, files), application (binaries/configs), and system (OS, boot images). It supports restoration after various incidents, not just one. Therefore, a robust procedure enables recovery of operations, software environments, and business data across scenarios.
Step-by-Step Solution:
Verification / Alternative check:
DR runbooks and audit requirements (e.g., ISO 27001) expect periodic restores at each layer to validate readiness.
Why Other Options Are Wrong:
Choosing just one restoration ignores the layered nature of failures and recovery.
“None” conflicts with the purpose of backups.
Common Pitfalls:
Having backups but no tested restore process; the only successful backup is one that can be restored in practice within RTO/RPO.
Final Answer:
All of the above
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