CISA Practice Question: Information Systems Operations and Business Resilience
A company performs daily full backups of its database and weekly incremental backups. The backup retention policy requires keeping full backups for 30 days and incremental backups for 7 days. An auditor reviews the backup schedule. Which backup type provides the fastest restore?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Full backup
A full backup contains all data and requires only one restore operation, making it faster than restoring from incremental or differential backups.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Log backup
Why it's wrong here
Incorrect: Log backups are used for point-in-time recovery, not for full restore speed.
- ✓
Full backup
Why this is correct
Correct: Restoring from a full backup is fastest because it does not require applying subsequent incremental or differential backups.
- ✗
Incremental backup
Why it's wrong here
Incorrect: Incremental backup restores require applying multiple backup sets, which is slower.
- ✗
Differential backup
Why it's wrong here
Incorrect: Differential restores are faster than incremental but still require the last full backup plus one differential.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CISA practice question is part of Courseiva's free ISACA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CISA exam.