CAS-004 Security Architecture Practice Question
A security architect is evaluating cryptographic agility for a system that must be resistant to quantum computing attacks. Which TWO algorithms are part of the NIST PQC standards? (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
✓
CRYSTALS-Dilithium
CRYSTALS-Kyber is a key encapsulation mechanism, and CRYSTALS-Dilithium is a digital signature scheme; both are NIST-selected PQC algorithms.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
RSA-4096
Why it's wrong here
RSA is vulnerable to quantum attacks.
- ✓
CRYSTALS-Dilithium
Why this is correct
Dilithium is a lattice-based signature scheme.
- ✗
AES-256
Why it's wrong here
AES-256 is symmetric and considered quantum-safe, but not a PQC algorithm newly standardized.
- ✗
SHA-256
Why it's wrong here
SHA-256 is a hash function, not a PQC algorithm.
- ✓
CRYSTALS-Kyber
Why this is correct
Kyber is a lattice-based KEM.
Go deeper
Related to this question
About these practice questions
This CAS-005 question is part of Courseiva's 968-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
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.