A. The update automatically installs without user intervention if the deadline is missed.
B. All update notifications are disabled to reduce user distraction.
C. Users receive notifications that the update is now overdue and needs immediate attention.
D. Users receive a reminder that they can still defer the update for up to 30 days.
Explanation:
Apple’s managed software updates allow MDM administrators to enforce deadlines for macOS upgrades or patches. Apple Learning specifies that if the user does not manually install the update before the deadline, the update installs automatically. This occurs regardless of user activity, ensuring the Mac is brought into compliance. Users may receive reminders before the deadline, but once the deadline passes, the update is forced to install. This guarantees that security patches or new OS versions are not indefinitely delayed by end-user inaction. Notifications are not suppressed, and there is no 30-day deferral once a deadline is in effect. The entire purpose of this mechanism is to ensure organizations can enforce timely compliance with critical security or functional updates.
Reference: Apple Platform Deployment ― “Enforce software update deadlines with MDM.”