ISC2 CC Practice Question: Business Continuity, Disaster Recovery, and Incident Response
A company is planning its backup strategy and wants to balance storage efficiency with restore speed. Which TWO backup strategies should the company consider? (Select TWO)
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 weekly, incremental daily
To minimize storage usage while ensuring fast restores, a common strategy is to use a full backup as the primary and either incremental or differential as the secondary. Option A (full weekly + incremental daily) saves storage as incremental backups only store changes since the last backup, but restore requires the full and all incrementals. Option C (full weekly + differential daily) uses more storage than incremental but restore is faster as only the full and last differential are needed. Both strategies meet the requirements; other options either use excessive storage (B, E) or slow restore (D) or are not two-type strategies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Full backup weekly, incremental daily
Why this is correct
Correct. Full backup weekly with daily incremental backups minimizes storage because incrementals only store changes. Restore requires the full plus all incrementals, which is slower but storage-efficient.
- ✗
Full backup daily, no other backups
Why it's wrong here
Incorrect. Full backup daily uses excessive storage and does not involve a secondary backup type.
- ✓
Full backup weekly, differential daily
Why this is correct
Correct. Full backup weekly with daily differential backups provides a fast restore (full plus latest differential) while still reducing storage compared to daily fulls, though more storage than incremental.
- ✗
Full backup monthly, incremental weekly
Why it's wrong here
Incorrect. Monthly full with weekly incremental results in slow restore when many incrementals are needed, and may not meet recovery time objectives.
- ✗
Full backup weekly, incremental daily, and differential weekly
Why it's wrong here
Incorrect. This involves three backup types (full, incremental, differential) and is not a simple primary-secondary strategy; also uses more storage and complexity.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CC practice question is part of Courseiva's free ISC2 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 CC exam.