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CISA Practice Question: An organization's backup strategy involves weekly…
An organization's backup strategy involves weekly full backups and daily incremental backups. After a system failure, the restoration takes longer than expected. What is the most likely cause?
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
✓
Restoration process not tested
If the restoration process is not tested, unexpected issues (e.g., missing dependencies, corruption, or procedural errors) can cause delays, leading to longer restoration times. Option A (incremental backups not stored offsite) affects availability but not directly the restoration duration. Option B (full backup frequency too low) could increase restore time due to more increments, but testing is a more likely root cause for a specific delay. Option D (tape rotation failure) could cause missing backups, but the question states backup strategy worked; the issue is restore time, not backup failure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Incremental backups not stored offsite
Why it's wrong here
Offsite storage affects availability, not restoration speed.
- ✗
Full backup frequency too low
Why it's wrong here
While low full backup frequency can affect recovery complexity, it is less likely the primary cause of unexpected delay.
- ✓
Restoration process not tested
Why this is correct
Without testing, the actual time required for restoration is unknown, leading to unrealistic expectations.
- ✗
Tape rotation failure
Why it's wrong here
Tape rotation failure would cause missing backups, not slow restoration.
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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.