NTS - National Testing Service Basic Computer Knowledge Questions and Answers

Question 1

Which component is often referred to as the 'brain' of the computer, responsible for executing instructions and performing calculations?

Accepted Answer

Central Processing Unit (CPU)

Answer

The Central Processing Unit (CPU) is the primary component of a computer that processes instructions. It acts as the 'brain', performing most of the calculations and executing commands given by software programs. RAM is temporary memory, an HDD is for long-term storage, and the Motherboard connects all components.

Question 2

A user turns on their computer and sees the desktop, icons, and start menu. What type of software is primarily responsible for managing the computer's hardware and providing this user interface?

Accepted Answer

Operating System

Answer

The Operating System (OS), such as Microsoft Windows or macOS, is system software that manages all computer hardware and software resources and provides a user interface for interaction. Web browsers access the internet, application software performs specific tasks (like word processing), and utility software helps manage the computer (like antivirus).

Question 3

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

Accepted Answer

Keyboard

Answer

An input device is any hardware device that sends data to a computer, allowing you to interact with and control it. A keyboard is used to enter text and commands. A printer, monitor, and speakers are all output devices, as they receive data from the computer to produce hard copies, display visuals, or generate sound, respectively.

Question 4

Which type of computer memory is volatile, meaning its contents are lost when the computer is powered off?

Accepted Answer

Random Access Memory (RAM)

Answer

Random Access Memory (RAM) is a volatile form of computer memory. It serves as temporary storage for data that the CPU needs to access quickly while the computer is on. When the power is turned off, all data in RAM is lost. ROM, SSDs, and Flash Drives are non-volatile storage, retaining data without power.

Question 5

To view and interact with websites on the internet, which type of application software is required?

Accepted Answer

Web Browser

Answer

A web browser is an application software specifically designed to access, retrieve, and display content from the World Wide Web. Examples include Google Chrome, Mozilla Firefox, and Microsoft Edge. A word processor is for creating documents, a file explorer manages files, and a media player plays audio/video.

NTS - National Testing Service Practice Test

NTS - National Testing Service Practice Test

NTS - National Testing Service Basic Computer Knowledge Questions and Answers