hệ điều hành

What is the main role of an operating system?

• To compile programs

• To manage databases

• To act as an interface between user and hardware

• To write applications

Which of the following is NOT a goal of an operating system?

• Make the system user-friendly

• Efficient hardware use

• Replace hardware components

• Run user programs

Which is NOT a component of a computer system?

• Operating System

• Hardware

• Users

• Website

What does a context switch involve?

• Restarting the CPU

• Switching from one process to another

• Installing a new OS

• Formatting memory

Which mode allows the OS to execute privileged instructions?

• User mode

• Guest mode

• Admin mode

• Kernel mode

Which user interface is text-based?

• GUI

• CLI

• Touch UI

• Voice UI

What is the purpose of system calls?

• To call other users

• To connect hardware

• To request services from the OS

• To start the monitor

What kind of file system operation is 'searching'?

• Write operation

• Access control

• Metadata handling

• Read/lookup operation

Booting is the process of:

• Logging into email

• Updating drivers

• Starting the computer and OS

• Running a program in memory

Which design divides the OS into layers?

• Modular

• Monolithic

• Microkernel

• Layered