alleryStart learning →The NIST Cybersecurity Framework consists of how many CORE FUNCTIONS?
A3 distinct functions
B10 detailed functions
C7 layered functions
D5 functions
Answer & Solution
Correct answer: D. 5 functions
1. NIST CSF Core has 5 high-level FUNCTIONS that anchor the entire framework.
2. They are: IDENTIFY (asset/risk understanding), PROTECT (safeguards), DETECT (incidents), RESPOND (containment), RECOVER (resilience/restoration).
3. Each function is broken down into CATEGORIES and SUBCATEGORIES with mappings to standards (ISO 27001, NIST SP 800-53, etc.).
4. The 5 functions together form an ongoing CYCLE — security is a continuous process, not a one-off project.
_Source: NIST Cybersecurity Framework v1.1, §2.1 (Framework Core), p. 6-8._
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