Answer:
a. Mandatory Access Control (MAC).
Step-by-step explanation:
The access control model that was popularized by military usage is Mandatory Access Control (MAC). In this model, access to resources is based on the classification of information and the security clearances of individuals.
Mandatory Access Control is designed to enforce strict security policies, ensuring that only authorized individuals with the appropriate clearances can access classified or sensitive information. The access control decisions are made by the system, rather than by the individual users or data owners.
In a military context, this model is crucial for protecting sensitive information and preventing unauthorized access. For example, different levels of clearance, such as Top Secret, Secret, and Confidential, are assigned to information based on its level of sensitivity. Only individuals with the corresponding clearance level are granted access to that information.
Unlike Discretionary Access Control (DAC), where access decisions are left to the discretion of individual owners or administrators, Mandatory Access Control limits user discretion and enforces access control decisions based on pre-defined rules and policies.
Other access control models, such as Role-Based Access Control (RBAC) and Attribute-Based Access Control (ABAC), are also widely used but were not specifically popularized by military usage.
In summary, the access control model that was popularized by military usage is Mandatory Access Control (MAC). It is designed to enforce strict security policies based on information classification and security clearances, ensuring that only authorized individuals can access sensitive information.