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CRISC · Question #556

An organization uses a biometric access control system for authentication and access to its server room. Which control type has been implemented?

The correct answer is C. Preventive. A biometric access control system is a preventive control because its primary function is to stop unauthorized access to a physical or logical asset before an incident occurs.

Submitted by tyler.j· Apr 18, 2026Information Technology and Security

Question

An organization uses a biometric access control system for authentication and access to its server room. Which control type has been implemented?

Options

  • ADetective
  • BDeterrent
  • CPreventive
  • DCorrective

How the community answered

(25 responses)
  • A
    4% (1)
  • B
    4% (1)
  • C
    80% (20)
  • D
    12% (3)

Why each option

A biometric access control system is a preventive control because its primary function is to stop unauthorized access to a physical or logical asset *before* an incident occurs.

ADetective

A detective control identifies an event *after* it has occurred, such as an intrusion detection system, which is not the primary function of an access control system.

BDeterrent

While a biometric system might have a deterrent effect, its fundamental purpose is to actively *prevent* unauthorized access, rather than merely discouraging it.

CPreventiveCorrect

A biometric access control system is a preventive control because it actively blocks unauthorized individuals from gaining entry to the server room, thereby preventing security incidents from occurring.

DCorrective

A corrective control aims to fix or restore systems *after* a security incident has taken place, which is not the role of an access control mechanism.

Concept tested: Control types (preventive)

Source: https://learn.microsoft.com/en-us/azure/security/fundamentals/control-types

Topics

#Preventive controls#Access control systems#Biometric authentication#Control types

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