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Describe Mandatory Access Control (MAC).

Mandatory Access Control (MAC) is a strict type of access control used by operating systems to limit what users or devices can do with files or resources. Unlike other access controls, MAC is set by system administrators and cannot be changed by users.

In MAC, each file or resource is given a classification label like confidential, secret, or top secret. Users and devices are also assigned similar labels. When someone tries to access a resource, the operating system checks their label to see if they have the clearance level to access it.

MAC is very secure, but it needs careful planning and constant monitoring to keep everything up to date. It’s the highest level of access control, and it’s different from lower-level controls like Discretionary Access Control (DAC), where individual users can set their own policies for resources they own.

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