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3 cards from this section. Quick, good the night before a test.
What is a flag bit?
Think about the bits that show conditions.
What does the interrupt enable flag do?
Consider what happens when it's turned on.
What is the primary role of the interrupt enable/disable flag?
Think about how it affects communication with devices.
True or False: The supervisor mode allows all users to perform any operation in the operating system.
Remember the roles of different users in a typical system.
Discuss the implications of leaving interrupts disabled while executing a significant operation in an OS. What can go wrong?
Think about how crucial timely responses are in real-life systems.
Analyze a situation where improper handling of the supervisor mode flag leads to security vulnerabilities in a system. Illustrate with examples.
Consider the balance between accessibility and security.
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