CAS-004 Security Architecture Practice Question
During a secure SDLC, a security architect wants to identify design flaws early. Which activity is most appropriate for the design phase?
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
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Threat modeling
Threat modeling is performed during the design phase to identify potential security threats and vulnerabilities before code is written.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Threat modeling
Why this is correct
Correct – threat modeling identifies design flaws.
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Penetration testing
Why it's wrong here
Penetration testing is done after deployment.
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Dynamic application security testing (DAST)
Why it's wrong here
DAST is performed after deployment or in staging.
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Static application security testing (SAST)
Why it's wrong here
SAST is performed during development, not design.
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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.