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Why is a device typically only accessible in kernel mode?
Why is a device typically only accessible in kernel mode?
- To improve the performance of the device
- To reduce the complexity of the device driver
- To allow user processes to directly access the device
- To prevent improper access that could crash the machine (correct)
What is the primary goal of device drivers?
What is the primary goal of device drivers?
- To optimize the performance of the device
- To provide a direct interface to the device for user processes
- To present a different interface to each user process
- To simplify the software developer's job by presenting a uniform interface (correct)
What is a common challenge when dealing with different devices?
What is a common challenge when dealing with different devices?
- They can only be accessed in user mode
- They all have the same programming interface
- They require a uniform interface to be presented to the kernel
- They rarely have the same programming interface (correct)
Why are device drivers typically part of the kernel?
Why are device drivers typically part of the kernel?
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What is the primary advantage of having a uniform interface for devices?
What is the primary advantage of having a uniform interface for devices?
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