IT PT21 - Quiz 1

What is the main role of an operating system?

• To store data permanently

• To process user inputs

• To manage hardware and software resources

• To create web pages

Answer explanation

The OS acts as a bridge between the user, software, and hardware. It controls memory, processes, devices, and files.

Which of the following is an example of an input/output device?

• CPU

• RAM

• Printer

• Operating System

Answer explanation

• A printer is an output device because it receives data from the computer and prints it. Input/output devices include anything that sends data to/from the computer.

Which type of operating system allows many users to access a computer system at the same time?

• Batch OS

• Time-sharing OS

• Distributed OS

• Embedded OS

Answer explanation

Time-sharing OS divides computing time among multiple users efficiently, allowing several to work at once—common in multi-user environments.

Which component is considered the "brain" of the computer?

• Hard drive

• RAM

• CPU

• Power supply

Answer explanation

The CPU (Central Processing Unit) processes all instructions and data—it performs calculations and makes decisions for the system.

What is the first process that happens when a computer is turned on?

• Software update

• Logging in

• Booting

• Data processing

Answer explanation

Booting is the startup process where the computer initializes hardware and loads the operating system from storage into memory.

Which of the following best describes a multi-core processor?

• A single CPU that can store more data

• Multiple CPUs on different computers

• A CPU with multiple processing units

• One processor that performs only one task

Answer explanation

A multi-core processor has multiple processing units (cores) in one chip, allowing parallel task execution.

What do we call the central part of the operating system that manages system resources?

• Shell

• BIOS

• Kernel

• Driver

Answer explanation

The kernel is the core of the OS; it handles CPU scheduling, memory management, and device control.

Which OS type is commonly used in smart appliances and ATMs?

• Batch OS

• Embedded OS

• Time-sharing OS

• Desktop OS

Answer explanation

Embedded OS runs on specialized hardware for dedicated functions—like ATMs, appliances, or sensors.

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

• To send emails from the OS

• To request services from the OS

• To install new hardware

• To restart the computer

Answer explanation

System calls allow programs to interact with the OS for functions like reading files, printing, and memory allocation.

Which service of an operating system manages files and folders?

• Process Management

• Memory Management

• File Management

• Device Driver Management

Answer explanation

10. File management involves creating, reading, writing, and organizing files and folders in storage.