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Operating System System Programs

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Questions and Answers

What are the two separable parts of the UNIX OS?

Systems programs and the kernel

In a layered approach, how is the operating system divided?

The operating system is divided into a number of layers (levels), each built on top of lower layers.

What is the key characteristic of a microkernel system structure?

Moving as much functionality from the kernel into user space

What is the benefit of a microkernel system structure?

Easier to extend the microkernel Signup and view all the answers

What is a major detriment of a microkernel system structure?

Performance overhead due to communication between user space and kernel space Signup and view all the answers

What modern operating system feature allows for loadable kernel modules?

Object-oriented approach Signup and view all the answers

What is the purpose of loadable kernel modules?

To make the system more flexible Signup and view all the answers

Why are most modern operating systems considered hybrid systems?

They combine multiple approaches to address performance, security, and usability needs Signup and view all the answers

What is the internal structure of Apple's Mac OS X operating system?

Consists of Mach microkernel, BSD Unix parts, I/O kit, and dynamically loadable modules Signup and view all the answers

What is Android's operating system based on?

Linux kernel but modified Signup and view all the answers