CompTIA Security+ CertMaster CE – Complete Exam
Questions and Answers (2026/2027 Edition)
1. Which security principle ensures that a system remains accessible to
authorized users when needed?
A) Confidentiality
B) Integrity
C) Availability
D) Non-repudiation
Answer C: Availability
Rationale: Availability ensures that systems and data are accessible to authorized
users when required, a core goal of security.
2. A security analyst implements a system that restricts access to approved
software. What type of control is this?
A) Physical control
B) Technical control
C) Administrative control
D) Operational control
Answer B: Technical control
Rationale: Allowlists and denylists are technical controls implemented through
software or hardware to enforce security policies .
,3. Which security control is designed to deter, detect, or reduce the impact of
a threat?
A) Policy
B) Control
C) Standard
D) Guideline
Answer B: Control
Rationale: Controls are safeguards that mitigate risk. They can be technical,
administrative, or physical.
4. A security analyst wants to ensure that a user's actions can be traced back
to them. Which concept is being applied?
A) Confidentiality
B) Non-repudiation
C) Availability
D) Integrity
Answer B: Non-repudiation
Rationale: Non-repudiation prevents a user from denying an action, often
through digital signatures or audit logs.
5. What is the main goal of a "defense in depth" strategy?
A) To eliminate all threats
,B) To implement multiple layers of security
C) To focus only on perimeter security
D) To rely on a single security solution
Answer B: To implement multiple layers of security
Rationale: Defense in depth uses layered security controls so that if one fails,
others still provide protection.
6. Which component is responsible for enforcing access control decisions?
A) Policy Decision Point (PDP)
B) Policy Enforcement Point (PEP)
C) Identity Provider (IdP)
D) Service Provider (SP)
Answer B: Policy Enforcement Point (PEP)
Rationale: The PEP enforces access decisions by granting or denying requests
based on policies .
7. A security team reviews SLAs with a cloud vendor. Which risk is being
managed?
A) Technical risk
B) Third-party risk
C) Operational risk
D) Financial risk
Answer B: Third-party risk
, Rationale: SLAs are part of vendor management and help mitigate risks
associated with third-party services .
8. An organization wants to prevent unauthorized access to a building. Which
physical security measure is most effective?
A) Firewall
B) Biometric access control
C) Encryption
D) VLAN segmentation
Answer B: Biometric access control
Rationale: Biometrics (fingerprint, retina scanning) are physical access controls
that authenticate individuals .
9. Which of the following is a component of the CIA triad?
A) Authentication
B) Integrity
C) Authorization
D) Accountability
Answer B: Integrity
Rationale: The CIA triad consists of Confidentiality, Integrity, and Availability .
Questions and Answers (2026/2027 Edition)
1. Which security principle ensures that a system remains accessible to
authorized users when needed?
A) Confidentiality
B) Integrity
C) Availability
D) Non-repudiation
Answer C: Availability
Rationale: Availability ensures that systems and data are accessible to authorized
users when required, a core goal of security.
2. A security analyst implements a system that restricts access to approved
software. What type of control is this?
A) Physical control
B) Technical control
C) Administrative control
D) Operational control
Answer B: Technical control
Rationale: Allowlists and denylists are technical controls implemented through
software or hardware to enforce security policies .
,3. Which security control is designed to deter, detect, or reduce the impact of
a threat?
A) Policy
B) Control
C) Standard
D) Guideline
Answer B: Control
Rationale: Controls are safeguards that mitigate risk. They can be technical,
administrative, or physical.
4. A security analyst wants to ensure that a user's actions can be traced back
to them. Which concept is being applied?
A) Confidentiality
B) Non-repudiation
C) Availability
D) Integrity
Answer B: Non-repudiation
Rationale: Non-repudiation prevents a user from denying an action, often
through digital signatures or audit logs.
5. What is the main goal of a "defense in depth" strategy?
A) To eliminate all threats
,B) To implement multiple layers of security
C) To focus only on perimeter security
D) To rely on a single security solution
Answer B: To implement multiple layers of security
Rationale: Defense in depth uses layered security controls so that if one fails,
others still provide protection.
6. Which component is responsible for enforcing access control decisions?
A) Policy Decision Point (PDP)
B) Policy Enforcement Point (PEP)
C) Identity Provider (IdP)
D) Service Provider (SP)
Answer B: Policy Enforcement Point (PEP)
Rationale: The PEP enforces access decisions by granting or denying requests
based on policies .
7. A security team reviews SLAs with a cloud vendor. Which risk is being
managed?
A) Technical risk
B) Third-party risk
C) Operational risk
D) Financial risk
Answer B: Third-party risk
, Rationale: SLAs are part of vendor management and help mitigate risks
associated with third-party services .
8. An organization wants to prevent unauthorized access to a building. Which
physical security measure is most effective?
A) Firewall
B) Biometric access control
C) Encryption
D) VLAN segmentation
Answer B: Biometric access control
Rationale: Biometrics (fingerprint, retina scanning) are physical access controls
that authenticate individuals .
9. Which of the following is a component of the CIA triad?
A) Authentication
B) Integrity
C) Authorization
D) Accountability
Answer B: Integrity
Rationale: The CIA triad consists of Confidentiality, Integrity, and Availability .
