CAS-004 Security Architecture Practice Question
An organization is planning to adopt quantum-resistant cryptography. According to NIST PQC standards, which algorithm is recommended for digital signatures?
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
✓
CRYSTALS-Dilithium
CRYSTALS-Dilithium is one of the NIST-selected post-quantum digital signature algorithms, providing security against quantum attacks.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Falcon
Why it's wrong here
Falcon is also a signature algorithm but not the one referenced in the stem's NIST PQC standards context; Dilithium is more commonly cited.
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CRYSTALS-Kyber
Why it's wrong here
Kyber is a key encapsulation mechanism (KEM), not a signature algorithm.
- ✓
CRYSTALS-Dilithium
Why this is correct
Dilithium is a NIST-standardized post-quantum digital signature algorithm.
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RSA-4096
Why it's wrong here
RSA is not quantum-resistant.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 practice question is part of Courseiva's free CompTIA 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 CAS-005 exam.