ISC2 CC Practice Question: Business Continuity, Disaster Recovery, and Incident Response
Which of the following is a key component of the 3-2-1 backup rule?
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
✓
Three copies, two different media types, one off-site
The 3-2-1 rule states: have 3 copies of data, on 2 different media types, with 1 copy off-site.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Two copies on different media, one off-site
Why it's wrong here
Rule requires three copies total.
- ✗
One copy on two different media, two off-site
Why it's wrong here
Incorrect description.
- ✗
Three copies on different media, two off-site
Why it's wrong here
Rule requires one off-site, not two.
- ✓
Three copies, two different media types, one off-site
Why this is correct
This is the exact description of the 3-2-1 rule.
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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.