Module: Segmentation, Backup & Power Activity type: Quiz / retrieval practice Target: ≥80% Objective: Explain what each number in the 3-2-1 strategy represents.
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Questions
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In the 3-2-1 strategy, what are the three copies?
Why do three directories on one physical disk fail to provide a strong 3-2-1 design?
Is RAID a complete substitute for backups? Explain briefly.
What is the purpose of keeping at least one copy off-site?
What is the difference between a Recovery Point Objective and a Recovery Time Objective?
Why can file synchronization fail to protect against accidental deletion or ransomware?
What does a successful SHA-256 comparison prove, and what does it not prove?
Why should a restore test use a separate destination instead of immediately overwriting production data?
Name two controls that can reduce the risk that ransomware deletes or encrypts every backup.
Does the classroom lab physically satisfy 3-2-1? Why or why not?
In plain words: Make a safety copy first so a mistake does not erase your work.
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