Free CISSP Security Architecture & Engineering Practice Test 2026 — Certified Information Systems Security Professional Questions

This free CISSP Security Architecture & Engineering practice test covers Domain 3 — security architecture and engineering, covering security models, cryptography, PKI, secure design, and physical security. Each question includes a detailed explanation grounded in the official ISC2 CBK — perfect for CISSP exam prep.

Key Topics in CISSP Security Architecture & Engineering

6 Free CISSP Security Architecture & Engineering Practice Questions with Answers

Sample Question 1 — Security Architecture and Engineering

Your organization is migrating to a cloud-based infrastructure. You need to ensure the security of sensitive data stored in the cloud. Which approach best balances security, cost, and agility?

  1. A. Implement a fully on-premises solution mirroring the cloud environment.
  2. B. Employ a hybrid cloud strategy, leveraging cloud services for non-sensitive data and on-premises for sensitive data. (Correct answer)
  3. C. Utilize a public cloud provider's native security features exclusively, without additional controls.
  4. D. Adopt a multi-cloud strategy with multiple providers to avoid vendor lock-in, ignoring any specific provider security features.

Correct answer: B

Explanation: A hybrid approach allows for leveraging the cost-effectiveness and scalability of the cloud while maintaining stricter controls for sensitive data on-premises. A is overly expensive and inflexible. C is insufficient, as relying solely on a vendor's basic security often leaves significant gaps. D introduces additional complexity and risks without addressing the core issue.

Sample Question 2 — Security Architecture and Engineering

A new mobile application requires access to corporate resources. Which security architecture principle should be prioritized to ensure least privilege and secure access?

  1. A. Allow full network access for simplicity.
  2. B. Implement a Zero Trust architecture, verifying identity and authorization for every access request. (Correct answer)
  3. C. Establish a strong password policy as the primary security measure.
  4. D. Use a Virtual Private Network (VPN) only for accessing sensitive data.

Correct answer: B

Explanation: Zero Trust is the most comprehensive approach, mitigating risks associated with implicit trust. A is fundamentally insecure. C is insufficient on its own. D doesn't address the need for secure access to all corporate resources.

Sample Question 3 — Security Architecture and Engineering

Your organization is experiencing a significant increase in denial-of-service (DoS) attacks. What architectural change would most effectively mitigate this risk?

  1. A. Increase firewall rule scrutiny.
  2. B. Implement a content delivery network (CDN) with DDoS mitigation capabilities. (Correct answer)
  3. C. Upgrade to faster network hardware.
  4. D. Train employees to identify and report suspicious emails.

Correct answer: B

Explanation: A CDN with DDoS mitigation absorbs and filters malicious traffic before it reaches the origin servers. A, C, and D address symptoms or unrelated issues.

Sample Question 4 — Security Architecture and Engineering

You are designing a new data center. To comply with industry best practices and regulatory requirements, which security measure should be integrated into the physical infrastructure design?

  1. A. Install sophisticated intrusion detection systems (IDS) only.
  2. B. Implement robust physical security controls, including access control, surveillance, and environmental monitoring. (Correct answer)
  3. C. Rely on virtualized security controls exclusively.
  4. D. Focus primarily on data encryption as the primary physical security measure.

Correct answer: B

Explanation: A layered approach to physical security is crucial. A is insufficient alone. C ignores the need for physical security. D is a data-centric approach, not a physical security approach.

Sample Question 5 — Security Architecture and Engineering

Your organization is adopting DevOps practices. What security architectural approach should be prioritized to ensure continuous security integration into the development lifecycle?

  1. A. Conduct full security assessments only after the software is deployed.
  2. B. Implement DevSecOps, integrating security throughout the entire SDLC. (Correct answer)
  3. C. Rely on the development team to handle all security considerations.
  4. D. Perform penetration testing only on critical applications.

Correct answer: B

Explanation: DevSecOps embeds security practices into each stage of the development pipeline, ensuring security is not an afterthought. A, C, and D are incomplete or insufficient.

Sample Question 6 — Security Architecture and Engineering

You need to design a system to protect against insider threats. Which security architecture concept is most relevant?

  1. A. Data Loss Prevention (DLP).
  2. B. Principle of Least Privilege. (Correct answer)
  3. C. Data encryption at rest and in transit.
  4. D. Multi-factor authentication (MFA).

Correct answer: B

Explanation: Least privilege limits access based on the role and need-to-know, preventing an insider from accessing data they shouldn't. While A, C, and D are valuable controls, they don't directly address the core issue of limiting access based on roles and responsibilities.

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