20+ practice questions focused on Security Engineering — one of the most tested topics on the CompTIA SecurityX (CAS-005) exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Security Engineering PracticeAn organization wants to implement a privileged access management (PAM) solution to manage administrative credentials. They require that administrators request temporary access to privileged accounts and that these credentials are automatically rotated after each use. Which PAM approach best meets these requirements?
Explanation: Just-in-time (JIT) access provisioning grants temporary privileges that expire after a defined period, and automatic credential rotation ensures that each session uses new credentials, meeting the requirement for temporary access and automatic rotation. Password vaulting may involve checkout but often does not force rotation, and session management primarily focuses on monitoring rather than credential rotation. Break-glass accounts are intended for emergency access only, not for routine administrative use.
A company is migrating from RSA to elliptic curve cryptography for digital signatures. They require a signature algorithm that provides at least 128 bits of security strength and is resistant to quantum computing attacks in the foreseeable future. Which TWO algorithms meet these requirements? (Select TWO.)
Explanation: DSA 3072 and RSA 4096 are both considered to provide at least 128 bits of security strength. Although all classical public-key algorithms are theoretically vulnerable to quantum attacks via Shor's algorithm, in practice DSA and RSA with large key sizes are currently believed to be more resistant to quantum computing attacks in the foreseeable future compared to elliptic curve algorithms like ECDSA and Ed25519, which are more susceptible due to their smaller key sizes and the efficiency of Shor's algorithm on elliptic curves.
An organization wants to implement passwordless authentication using FIDO2/WebAuthn. Which of the following best describes the primary security advantage of this approach over traditional password-based authentication?
Explanation: FIDO2/WebAuthn prevents phishing because the private key is bound to the origin (the specific website domain). During authentication, the browser verifies that the origin matches the one registered with the key pair. This means even if a user is tricked into visiting a fake site, the authentication will fail because the origin does not match, effectively thwarting phishing attacks.
A security architect is designing a new authentication system for a high-security environment. The system must support passwordless authentication while providing strong protection against phishing attacks. Which of the following protocols best meets these requirements?
Explanation: FIDO2/WebAuthn uses public key cryptography and is designed to resist phishing; it supports passwordless authentication. TOTP/HOTP are time-based and can be phished. X.509 certificates are not inherently passwordless. Kerberos requires passwords or tickets.
A security engineer is reviewing a PKI deployment where the root CA is kept offline. The issuing CA signs certificates for internal applications. Recently, a subordinate CA was compromised, and the engineer needs to revoke all certificates issued by that CA. Which of the following is the most efficient method to revoke these certificates?
Explanation: The best method is to use a CRL issued by the compromised CA, marking all its unexpired certificates as revoked. Revoking the CA certificate itself invalidates all certificates issued by it, including valid ones. Distributing a new CRL from the root CA would require the root to be online. Individual certificate revocation is inefficient.
+15 more Security Engineering questions available
Practice all Security Engineering questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Security Engineering. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Security Engineering questions on the CAS-005 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Security Engineering is tested as part of the CompTIA SecurityX (CAS-005) blueprint. Practicing with targeted Security Engineering questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free CAS-005 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but Security Engineering is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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