Introduction to Computers

What is a computer?

• A computer is an electronic device that processes data and executes instructions.

• A computer is a living organism.

• A computer is a type of furniture.

• A computer is a tool for cooking.

Answer explanation

A computer is defined as an electronic device that processes data and executes instructions, making the first choice the correct answer. The other options incorrectly describe a computer.

Name the main components of a computer.

• CPU, RAM, storage, motherboard, power supply, input/output devices

• Keyboard, mouse, printer

• Graphics card, sound card, monitor

• Operating system, software applications, network

Answer explanation

The main components of a computer include the CPU, RAM, storage, motherboard, power supply, and input/output devices. These elements work together to perform computing tasks, unlike the other options which are peripherals or software.

What is the function of the CPU?

• The function of the CPU is to execute instructions and process data.

• To provide power to the computer

• To manage network connections

• To store data permanently

Answer explanation

The CPU, or Central Processing Unit, is responsible for executing instructions and processing data, making it the core component that drives the computer's operations. The other options do not accurately describe the CPU's primary function.

Define software and give an example.

• Software is a collection of random data; an example is a text file.

• Software is a physical device; an example is a printer.

• Software is a type of hardware; an example is a motherboard.

• Software is a set of instructions for computers; an example is Google Chrome.

Answer explanation

Software is defined as a set of instructions that tell a computer how to perform tasks. Google Chrome is a web browser that exemplifies software, as it operates based on coded instructions to facilitate internet browsing.

What is an operating system?

• A type of computer hardware

• A programming language

• An operating system is software that manages computer hardware and software resources.

• A web browser

Answer explanation

An operating system is essential software that coordinates and manages both the hardware and software resources of a computer, making it the correct choice among the options provided.

Explain the difference between hardware and software.

• Software refers to the physical components of a computer.

• Hardware is the physical part of a computer, while software is the set of instructions that tells the hardware what to do.

• Hardware and software are the same thing.

• Hardware is the software that runs on a computer.

Answer explanation

The correct choice clearly distinguishes hardware as the physical components of a computer and software as the instructions that direct the hardware's operations, highlighting their distinct roles.

What is the purpose of RAM in a computer?

• The purpose of RAM in a computer is to provide fast, temporary storage for data and instructions that the CPU uses during operation.

• To manage the power supply of the computer.

• To increase the computer's internet speed.

• To permanently store the operating system files.

Answer explanation

The correct choice highlights that RAM provides fast, temporary storage for data and instructions used by the CPU, which is essential for efficient operation. Other options do not accurately describe RAM's function.

What are input and output devices?

• Input devices are used for storage; output devices are used for processing.

• Input devices include keyboards and mice; output devices include monitors and printers.

• Input devices are only used for gaming; output devices are only for sound.

• Input devices include monitors and printers; output devices include keyboards and mice.

Answer explanation

Input devices, like keyboards and mice, allow users to enter data into a computer, while output devices, such as monitors and printers, display or produce the results. This makes the second choice the correct one.

What is the internet and how does it work?

• The internet is a local network of devices in a single building.

• The internet is a type of computer hardware.

• The internet is a global network of interconnected computers that communicate using standardized protocols.

• The internet is a software application for browsing files.

Answer explanation

The correct choice describes the internet as a global network of interconnected computers that communicate using standardized protocols, which is essential for data exchange and connectivity across the world.

Describe the importance of computer security.

• Computer security is primarily about making computers faster.

• Computer security is only necessary for large corporations.

• Computer security can be ignored if you have antivirus software.

• Computer security is important for protecting sensitive data, ensuring system integrity, preventing cyber attacks, and maintaining user trust.

Answer explanation

Computer security is crucial for safeguarding sensitive information, ensuring the integrity of systems, preventing cyber threats, and maintaining the trust of users, making it essential for everyone, not just large corporations.