Which of the following is an example of a physical control designed to prevent security...

Physical controls are security measures that prevent unauthorized physical access to critical assets, such as IT infrastructure, sensitive documents, or restricted areas.

(A) Preventing database administrators from initiating program changes:

This is a logical (IT) control rather than a physical control. Logical controls manage access permissions and prevent unauthorized software changes.

(B) Blocking technicians from getting into the network room (Correct Answer):

This is a physical control because it prevents unauthorized personnel from physically accessing critical IT infrastructure, such as servers and networking devices.

Unauthorized access to a network room could lead to data breaches, hardware manipulation, or cyberattacks.

(C) Restricting system programmers' access to database facilities:

This is an access control measure, which can be either logical (permissions, role-based access) or physical. However, it primarily refers to IT access controls rather than a physical security measure.

(D) Using encryption for data transmitted over the public internet:

This is a technical control, not a physical one. Encryption protects data but does not prevent physical breaches.

IIA GTAG 17: Auditing IT Security – Emphasizes the role of physical security in protecting IT infrastructure.

COBIT Framework – DSS05 (Manage Security Services) – Highlights physical access restrictions as a key security measure.

ISO/IEC 27001: Information Security Management System – Identifies physical security as a fundamental control for IT risk management.

Analysis of Each Option:IIA References:Conclusion:Since physical security controls prevent unauthorized physical access, option (B) is the correct answer.