CISA Practice Question: Information Systems Operations and Business Resilience
An organization's backup strategy includes full backups every Sunday and incremental backups on other days. On Wednesday, a failure occurs. Which backups are needed to restore the data?
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
✓
Sunday's full backup and Monday through Wednesday incremental backups
To restore from incremental backups, you need the last full backup (Sunday) and all incremental backups from Monday through Wednesday.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Sunday's full backup only
Why it's wrong here
Incremental backups after Sunday are needed to capture changes.
- ✗
Sunday's full backup and Wednesday's incremental backup
Why it's wrong here
Monday's and Tuesday's incremental backups are also required to apply all changes.
- ✗
Wednesday's incremental backup only
Why it's wrong here
The full backup is required as a base.
- ✓
Sunday's full backup and Monday through Wednesday incremental backups
Why this is correct
All incremental backups since the last full backup are needed.
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JA
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.