Computer Quiz For Class 4 With Answers

1. Which part of the computer is known as the 'brain' of the computer?

Monitor

Keyboard

CPU

Mouse

The CPU, or Central Processing Unit, is often referred to as the 'brain' of the computer. This is because it performs most of the processing inside the computer. Just like our brains allow us to think, make decisions, and process information, the CPU handles instructions from programs and apps, processes data, and manages tasks efficiently. It's essential for running software and executing commands, making it critical for the computer's overall operation. Other devices like monitors, keyboards, and mice serve different functions like displaying information, inputting data, and controlling the computer's interface.

Explanation

The CPU, or Central Processing Unit, is often referred to as the 'brain' of the computer. This is because it performs most of the processing inside the computer. Just like our brains allow us to think, make decisions, and process information, the CPU handles instructions from programs and apps, processes data, and manages tasks efficiently. It's essential for running software and executing commands, making it critical for the computer's overall operation. Other devices like monitors, keyboards, and mice serve different functions like displaying information, inputting data, and controlling the computer's interface.

2. Computers can be used to play games.

True

False

Computers can be used to play games because they can process and display graphics, handle input from peripherals such as keyboards and mice, and run software designed specifically for gaming. Additionally, computers can connect to the internet, allowing for online multiplayer gaming experiences. The development of powerful processors and advanced graphics cards has further enhanced the gaming capabilities of computers, making them a popular choice for gamers worldwide.

Explanation

Computers can be used to play games because they can process and display graphics, handle input from peripherals such as keyboards and mice, and run software designed specifically for gaming. Additionally, computers can connect to the internet, allowing for online multiplayer gaming experiences. The development of powerful processors and advanced graphics cards has further enhanced the gaming capabilities of computers, making them a popular choice for gamers worldwide.

3. Small pictures on the desktop are called icons.

True

False

Small pictures on the desktop that represent files, folders, or applications are commonly referred to as icons. Icons serve as visual representations of the corresponding files or programs, allowing users to easily identify and access them. This term is widely used in computer interfaces, making the statement "Small pictures on the desktop are called icons" true.

Explanation

Small pictures on the desktop that represent files, folders, or applications are commonly referred to as icons. Icons serve as visual representations of the corresponding files or programs, allowing users to easily identify and access them. This term is widely used in computer interfaces, making the statement "Small pictures on the desktop are called icons" true.

4. Which of the following is an input device?

VDU

Keyboard

Paper

None of these

A keyboard is an input device that allows users to input data into a computer system by pressing keys corresponding to letters, numbers, symbols, and commands. It is a common input device used for typing text, entering commands, and navigating through computer interfaces.

Explanation

A keyboard is an input device that allows users to input data into a computer system by pressing keys corresponding to letters, numbers, symbols, and commands. It is a common input device used for typing text, entering commands, and navigating through computer interfaces.

5. Which button should be clicked to reduce a window to a button on the taskbar?

Minimize

Maximize

Restore

Close

The "minimize" button on a window should be clicked to reduce it to a button on the taskbar. This action does not close the window but instead temporarily removes it from view while keeping the application running in the background. The minimized window can be quickly accessed again by clicking its button on the taskbar. This feature is useful for clearing up screen space without closing applications, allowing for easier multitasking and organization on your computer screen.

Explanation

The "minimize" button on a window should be clicked to reduce it to a button on the taskbar. This action does not close the window but instead temporarily removes it from view while keeping the application running in the background. The minimized window can be quickly accessed again by clicking its button on the taskbar. This feature is useful for clearing up screen space without closing applications, allowing for easier multitasking and organization on your computer screen.

6. What panel helps you change the settings of your computer?

My document

Control panel

Files

None of these

The Control Panel is the tool that helps you change the settings of your computer. It provides access to various system settings and configurations, such as adding or removing software, adjusting hardware settings, managing network connections, and customizing user accounts. The Control Panel is designed to help users manage the functions and performance of their computers easily, making it a central feature for maintaining and troubleshooting various aspects of the operating system.

Explanation

The Control Panel is the tool that helps you change the settings of your computer. It provides access to various system settings and configurations, such as adding or removing software, adjusting hardware settings, managing network connections, and customizing user accounts. The Control Panel is designed to help users manage the functions and performance of their computers easily, making it a central feature for maintaining and troubleshooting various aspects of the operating system.

7. What is the background of the desktop called?

Background

Screensaver

Wallpaper

None of these

The background of the desktop on a computer is called "wallpaper." This term refers to the image or color that fills the screen behind the icons on a computer's desktop. Users can customize their wallpaper with various images, colors, or designs to personalize their computing experience. Wallpapers can be changed frequently according to the user’s preference, reflecting personal tastes or even moods. Unlike a screensaver, which activates when the computer is inactive, the wallpaper is always visible whenever the desktop is showing.

Explanation

The background of the desktop on a computer is called "wallpaper." This term refers to the image or color that fills the screen behind the icons on a computer's desktop. Users can customize their wallpaper with various images, colors, or designs to personalize their computing experience. Wallpapers can be changed frequently according to the user’s preference, reflecting personal tastes or even moods. Unlike a screensaver, which activates when the computer is inactive, the wallpaper is always visible whenever the desktop is showing.

8. Which device is used to input text into a computer?

Mouse

Printer

Monitor

Keyboard

A keyboard is used to input text into a computer. It features a set of keys for letters, numbers, and symbols, allowing users to type and enter data into various software applications and browsers. This makes it essential for writing documents, searching the internet, coding, and more. Unlike a mouse, which is used for clicking and navigating; a printer, which outputs printed documents; or a monitor, which displays visual output from the computer; the keyboard specifically allows for text entry.

Explanation

A keyboard is used to input text into a computer. It features a set of keys for letters, numbers, and symbols, allowing users to type and enter data into various software applications and browsers. This makes it essential for writing documents, searching the internet, coding, and more. Unlike a mouse, which is used for clicking and navigating; a printer, which outputs printed documents; or a monitor, which displays visual output from the computer; the keyboard specifically allows for text entry.

9. What are a keyboard, mouse, and joystick examples of?

Storage devices

None of these

Input devices

Output devices

A keyboard, mouse, and joystick are all examples of input devices. These devices allow users to enter data, commands, or control signals into a computer. The keyboard lets you type text, the mouse helps navigate and interact with graphical interfaces, and the joystick allows for precise control in games and simulations. They all play a crucial role in how we communicate with and control our computers. Unlike output devices, which display or produce data from the computer, input devices send information to the computer.

Explanation

A keyboard, mouse, and joystick are all examples of input devices. These devices allow users to enter data, commands, or control signals into a computer. The keyboard lets you type text, the mouse helps navigate and interact with graphical interfaces, and the joystick allows for precise control in games and simulations. They all play a crucial role in how we communicate with and control our computers. Unlike output devices, which display or produce data from the computer, input devices send information to the computer.

10. What is the name of an input device that captures both text and pictures directly into a computer?

Keyboard

Microphone

Mouse

Scanner

A scanner is an input device that captures text and pictures directly into the computer. It works by converting physical documents or images into digital format, allowing them to be stored, edited, or transmitted electronically. Unlike a keyboard, microphone, or mouse, which primarily capture input in the form of text, sound, or movement respectively, a scanner specifically focuses on capturing visual information and converting it into digital data that can be processed by the computer.

Explanation

A scanner is an input device that captures text and pictures directly into the computer. It works by converting physical documents or images into digital format, allowing them to be stored, edited, or transmitted electronically. Unlike a keyboard, microphone, or mouse, which primarily capture input in the form of text, sound, or movement respectively, a scanner specifically focuses on capturing visual information and converting it into digital data that can be processed by the computer.

11. What is an example of an output device that displays information on a screen?

Scanner

Microphone

Monitor

Keyboard

A monitor is an example of an output device. It displays information and visuals generated by the computer, such as windows, apps, videos, and games. Essentially, it shows the results of the computer’s computations and user inputs. This makes it crucial for interacting with the computer as it allows users to see what the machine is doing. Unlike input devices like a scanner, which captures images and text into the computer, or a keyboard and microphone, which are used to input data and sound, a monitor's sole function is to output digital content visually.

Explanation

A monitor is an example of an output device. It displays information and visuals generated by the computer, such as windows, apps, videos, and games. Essentially, it shows the results of the computer’s computations and user inputs. This makes it crucial for interacting with the computer as it allows users to see what the machine is doing. Unlike input devices like a scanner, which captures images and text into the computer, or a keyboard and microphone, which are used to input data and sound, a monitor's sole function is to output digital content visually.

12. The full form of CD is Compact Disco.

True

False

The full form of CD is Compact Disc, not "Compact Disco." A Compact Disc is a digital optical disc storage format that was co-developed by Philips and Sony and was originally used to store and play music. The term "disco" refers to a genre of dance music, not a storage format.

Explanation

The full form of CD is Compact Disc, not "Compact Disco." A Compact Disc is a digital optical disc storage format that was co-developed by Philips and Sony and was originally used to store and play music. The term "disco" refers to a genre of dance music, not a storage format.

13. What is output obtained on paper using a printer called?

Softcopy

Hard copy

Paper copy

None of these

The output obtained on paper using a printer is called a "hard copy." This term refers to the physical version of digital documents or information. Unlike a "softcopy," which exists electronically and can be viewed on digital devices like computers, smartphones, or tablets, a hard copy is tangible. You can hold it, write on it, and physically move it around. Hard copies are essential for official documents, legal contracts, and any information that requires manual handling or signatures.

Explanation

The output obtained on paper using a printer is called a "hard copy." This term refers to the physical version of digital documents or information. Unlike a "softcopy," which exists electronically and can be viewed on digital devices like computers, smartphones, or tablets, a hard copy is tangible. You can hold it, write on it, and physically move it around. Hard copies are essential for official documents, legal contracts, and any information that requires manual handling or signatures.

14. Which of the following is not a pointing device?

Keyboard

Mouse

Joystick

Light pen

A keyboard is not considered a pointing device because it is primarily used for inputting text and commands, rather than directly controlling the cursor or selecting objects on the screen. Pointing devices, such as a mouse, joystick, or light pen, are specifically designed to move the cursor and interact with graphical user interfaces. While a keyboard can indirectly control the cursor by using arrow keys or shortcuts, it is not classified as a pointing device in the traditional sense.

Explanation

A keyboard is not considered a pointing device because it is primarily used for inputting text and commands, rather than directly controlling the cursor or selecting objects on the screen. Pointing devices, such as a mouse, joystick, or light pen, are specifically designed to move the cursor and interact with graphical user interfaces. While a keyboard can indirectly control the cursor by using arrow keys or shortcuts, it is not classified as a pointing device in the traditional sense.

15. On which menu are the cut, copy, and paste options available?

File

Edit

View

None of these

The cut, copy, and paste options are typically available on the "edit" menu in most software applications. These options allow users to manipulate and transfer text or other data within the application. The "file" menu usually contains options related to saving, opening, and printing files, while the "view" menu typically offers options to customize the appearance of the application's interface. Therefore, the correct answer is "edit" as it is the menu where cut, copy, and paste options are commonly found.

Explanation

The cut, copy, and paste options are typically available on the "edit" menu in most software applications. These options allow users to manipulate and transfer text or other data within the application. The "file" menu usually contains options related to saving, opening, and printing files, while the "view" menu typically offers options to customize the appearance of the application's interface. Therefore, the correct answer is "edit" as it is the menu where cut, copy, and paste options are commonly found.