Operating System Services Quiz

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Which approach do most modern operating systems take?

Pure monolithic model
Hybrid model combining multiple approaches (correct)
Pure microkernel model
Layered model with no combination

What is a key feature of the Linux and Solaris kernels?

Monolithic architecture only
Microkernel structure
Layered architecture
Modular design for dynamic loading (correct)

In Mac OS X, what components make up the kernel?

Aqua UI and Cocoa programming environment
Mach microkernel and BSD Unix parts (correct)
Java and Quicktime
I/O kit and kernel extensions

Which component is part of the Mac OS X kernel structure?

BSD Mach (C) Signup and view all the answers

What differentiates the handheld iOS from Mac OS X?

iOS runs on different CPU architecture (B) Signup and view all the answers

Which operating system mostly follows a monolithic architecture with microkernel for subsystem personalities?

Windows (A) Signup and view all the answers

What is the purpose of I/O kit in the Mac OS X kernel?

To facilitate communication with external devices (D) Signup and view all the answers

Which component is responsible for enabling dynamically loadable modules in the Linux and Solaris kernels?

Modular design (B) Signup and view all the answers

What part of the Mac OS X kernel enables the addition of extra functionality through modules?

Kernel extensions (C) Signup and view all the answers

What distinguishes iOS from Mac OS X in terms of application compatibility?

iOS is based on a different CPU architecture than Mac OS X (D) Signup and view all the answers

What is the purpose of system calls in an operating system?

To provide a high-level interface for applications to access OS services (A) Signup and view all the answers

In the context of operating system services, what does resource allocation primarily involve?

Allocating CPU cycles, memory, and other resources to multiple users or jobs (B) Signup and view all the answers

What role does an Application Programming Interface (API) play in software communication?

It enables two software programs to interact with each other by defining functions they can use (A) Signup and view all the answers

What is the main purpose of caching in storage systems?

To copy information into faster storage for quicker access (B) Signup and view all the answers

In a uniprocessor system, what role do special-purpose processors play?

They serve as device-specific processors or I/O processors (D) Signup and view all the answers

What is the purpose of Direct Memory Access (DMA) in computer systems?

To enable efficient data transfer between memory and devices (C) Signup and view all the answers

What is a fundamental service provided by operating systems for user interactions?

Facilitating a user interface (D) Signup and view all the answers

Which operation is vital for an operating system to perform when running a program?

Loading the program into memory (C) Signup and view all the answers

What is a primary function that a running program may require from the operating system?

I/O device communication (A) Signup and view all the answers

Which service is necessary for programs to interact with files and directories in an operating system?

Managing file permissions (D) Signup and view all the answers