Properly backed up data does not include ________.

Question

BlackTom AI · Accepted Answer

Proper backup practice emphasizes protecting data confidentiality, integrity, and availability; making backups publicly accessible runs counter to these objectives.

1. Relevant knowledge points and concepts
- Backup objectives: ensure recoverability (availability), protect integrity (no tampering), and maintain confidentiality (prevent unauthorized access).
- Best practices: encrypt backups to protect confidentiality, store copies off-site to survive local disasters, schedule backups at appropriate frequency to meet recovery point objectives (RPO), and enforce access controls so only authorized personnel can retrieve backups.

2. Step-by-step reasoning process
- Evaluate each option against the core goals of backups.
  a) Encryption: protects confidentiality of backup data — this is a correct and recommended practice.
  b) Secure off-site storage: ensures availability after physical site loss (fire/theft) — this is recommended.
  c) Public accessibility: if backups are publicly accessible, confidentiality is lost and risk of breach increases — this contradicts best practices.
  d) Proper frequency: regular backups are required to limit potential data loss and meet RPO — this is recommended.
- Compare each; only option (c) conflicts with core backup goals.

3. Calculations/intermediate steps
- No numerical calculations are needed; reasoning is conceptual and policy-based.

4. Why the correct answer is correct
- Ensuring backups are publicly accessible exposes sensitive data and undermines confidentiality and security controls. Properly backed up data should be protected, not freely accessible to the public.

5. Why the other options are incorrect
- Encryption: correct because it secures data at rest and in transit.
- Off-site storage: correct because it preserves data through local disasters.
- Proper frequency: correct because it limits data loss and meets recovery requirements.

6. Conclusion
- The statement that does not belong to proper backup practice is "ensuring that copies of data files are publicly accessible," which matches the provided answer.

Properly backed up data does not include ________.单项选择题

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