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Comparison of Kernel Modularity in BSD, Linux, and Basic I/O Devices

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Comparison of Kernel Modularity in BSD, Linux, and Basic I/O Devices

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Questions and Answers

What type of device stores information in fixed-size blocks with each having its own address?

Block device (correct)

Network card

Character device

Keyboard

Which operating system can be configured to load drivers only when needed?

BSD

Windows

Linux (correct)

Solaris

What are the two approaches to addressing device registers and data buffers?

Direct addressing and memory addressing

Memory-mapped I/O and hardware-driven I/O (correct)

Processor-based addressing and controller-based addressing

Direct I/O and CPU-driven I/O

Which directory does the computer look in to load 32-bit drivers into memory when it starts up?

System32 Signup and view all the answers

What type of devices are accessed via streams of bytes and do not involve buffering?

Character Device Interfaces Signup and view all the answers

What is the main responsibility of a device driver when it comes to data transfer?

Managing data transfer from/to device to/from memory/CPU Signup and view all the answers

What function does the Device Driver API in POSIX systems typically include?

open( ) Signup and view all the answers

Which function in the Device Driver API is responsible for releasing dynamic table entries and the device?

close( ) Signup and view all the answers

Why must the device driver be executed as part of the operating system rather than part of a user program?

To execute privileged instructions at device startup Signup and view all the answers

What does the ioctl function in the Device Driver API allow programmers to do?

Implement device specific functions Signup and view all the answers