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?

<p>Easier to extend the microkernel</p> Signup and view all the answers

What is a major detriment of a microkernel system structure?

<p>Performance overhead due to communication between user space and kernel space</p> Signup and view all the answers

What modern operating system feature allows for loadable kernel modules?

<p>Object-oriented approach</p> Signup and view all the answers

What is the purpose of loadable kernel modules?

<p>To make the system more flexible</p> Signup and view all the answers

Why are most modern operating systems considered hybrid systems?

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

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

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

What is Android's operating system based on?

<p>Linux kernel but modified</p> Signup and view all the answers

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