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ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

While auditing a government workload running on Amazon EC2 instances that enforce SELinux, you must verify that the file-permission model meets Mandatory Access Control (MAC) requirements. Which statement correctly characterizes how access to classified files is enforced in a true MAC system?

  • Membership in Linux groups associated with each file controls access, and users can request to be added to those groups.

  • Users receive access dynamically when their AWS IAM session tags, such as project ID and location, match attributes assigned to the file.

  • File owners can override the system policy by running chmod to grant additional users read access.

  • Access decisions are determined by a central policy that compares user clearance with file classification labels, and only designated security administrators may change those labels.

ISC2 Systems Security Certified Practitioner (SSCP)
Access Controls
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