Discretionary Access Control (DAC) allows users to:

Discretionary Access Control (DAC) allows users to:

• A. Decide how to protect and share files
• B. Access files based on their roles
• C. Automatically share files with all employees
• D. Completely deny all access to files

Answer: (A)

Discretionary Access Control (DAC) empowers users to determine how to protect and share their files. In a DAC environment, the owner of a resource, such as a file or directory, has the ability to set permissions and control access to that resource based on their discretion. This means that the owner can grant or restrict access to other users, defining who can read, write, or execute the file according to their preferences. For instance, if a user creates a document, they can decide whether to keep it private, share it with specific individuals, or open it up for broader access within a network. This flexibility is a key characteristic of DAC and distinguishes it from other access control mechanisms, such as Role-Based Access Control (RBAC), where access is determined strictly by user roles rather than individual ownership decisions. In this context, other options presented do not align with the fundamental principles of DAC. Access based on roles speaks to a structured system where permissions are predefined by role, while automatic sharing contradicts the user's ability to exercise discretion. Completely denying all access is outside the scope of what DAC provides, as it implies a blanket restriction that negates user control over sharing.

Discretionary Access Control (DAC) empowers users to determine how to protect and share their files. In a DAC environment, the owner of a resource, such as a file or directory, has the ability to set permissions and control access to that resource based on their discretion. This means that the owner can grant or restrict access to other users, defining who can read, write, or execute the file according to their preferences.

For instance, if a user creates a document, they can decide whether to keep it private, share it with specific individuals, or open it up for broader access within a network. This flexibility is a key characteristic of DAC and distinguishes it from other access control mechanisms, such as Role-Based Access Control (RBAC), where access is determined strictly by user roles rather than individual ownership decisions.

In this context, other options presented do not align with the fundamental principles of DAC. Access based on roles speaks to a structured system where permissions are predefined by role, while automatic sharing contradicts the user's ability to exercise discretion. Completely denying all access is outside the scope of what DAC provides, as it implies a blanket restriction that negates user control over sharing.