NIST CSF Practice Question: What is the 3-2-1 backup rule? | CyberCertPrep
NISTNIST CSFRecover FunctionEASYFree question
What is the 3-2-1 backup rule?
A.Have 3 team members verify 2 backup logs every 1 week
B.Perform backups 3 times per day using 2 different tools for 1 month
C.Keep 3 copies of data on 2 different media types with 1 copy stored offsite
D.Retain backups for 3 months, 2 weeks, and 1 day
Why C is correct
The 3-2-1 backup rule recommends keeping 3 copies of data on 2 different media types with at least 1 copy stored offsite, providing robust protection against data loss.
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Where this fits in the NIST CSF exam
Recover Function
NIST CSF Recover function: recovery planning, improvements, and communications to restore services after an incident.
This question belongs to the "Recover" domain, which makes up about 10% of the NIST CSF exam.
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What is the primary purpose of data backups in the context of recovery?