Quiz: Computer- 3 - Class 6 MCQ

Most Powerful Type of Computer: Super Computer
- Mainframe Computer:
- Mainframe computers are large and powerful computers designed to handle extensive amounts of data processing and complex tasks.
- They are often used by large organizations and government agencies for critical applications such as banking, airline reservations, and scientific research.
- Mainframes are known for their reliability, scalability, and high performance.
- Mini Computer:
- Mini computers are smaller and less powerful than mainframes but more powerful than microcomputers.
- They are typically used for tasks that require moderate computing power, such as departmental databases and network servers.
- Mini computers offer a balance between performance and cost.
- Micro Computer:
- Microcomputers, also known as personal computers, are small and affordable computers designed for individual use.
- They are less powerful than mainframes and mini computers but are widely used for various applications, including office tasks, gaming, and internet browsing.
- Micro computers are the most common type of computer found in households and offices.
- Super Computer:
- Supercomputers are the most powerful and fastest computers available.
- They are designed to perform extremely complex calculations and process massive amounts of data in a short period.
- Supercomputers are used for tasks such as weather forecasting, scientific simulations, and advanced research.
- They typically consist of multiple processors and have exceptional computational capabilities.
Conclusion:
Among the given options, the most powerful type of computer is the Super Computer. Supercomputers are specifically designed to handle complex calculations and process large amounts of data quickly, making them ideal for demanding scientific and research applications.

Which part of computer system accepts input from the user?

The part of the computer system that accepts input from the user is the Input Unit.

Explanation:

Here is a detailed explanation of the answer:

• Input Unit: This is the component of the computer system that allows users to input data and instructions into the computer. It acts as an interface between the user and the computer.


• Examples: Some common examples of input devices that are part of the input unit include keyboards, mice, touchscreens, scanners, and microphones.


• Function: The input unit converts the user's input into a form that can be understood by the computer. It then sends this information to the central processing unit (CPU) for further processing.


• Importance: The input unit is crucial for enabling users to interact with the computer system and provide the necessary input for various tasks and operations.

Therefore, the correct answer is Option A: Input Unit.

Remember that the input unit is responsible for accepting input from the user, while the output unit is responsible for displaying or outputting information to the user. The control unit, on the other hand, is responsible for coordinating and controlling the activities of the computer's hardware components.

Correct option is B. ROM (Read only Memory)

To open a file, we can double click on:

A: File itself

B: Shortcut of file

C: Both A and B

D: None of these
The correct answer is C: Both A and B.
Explanation:
- When you double click on a file, whether it is the file itself or a shortcut of the file, it will open.
- The file can be a document, image, video, or any other type of file that your computer supports.
- A shortcut is a link to the original file, which allows you to access the file quickly without navigating to its location.
- Double clicking on the file or its shortcut triggers the default program associated with that file type, which opens the file for viewing, editing, or executing.
- This is a common and convenient way to open files on most operating systems, including Windows, macOS, and Linux.
- Double clicking on a file or its shortcut is a user-friendly method that eliminates the need for manual navigation and opening of files through the file explorer or command line.
- It provides a simple and intuitive way to access and open files on your computer.
In conclusion, to open a file, you can double click on either the file itself or its shortcut. This action triggers the default program associated with the file type and allows you to view, edit, or execute the file.

Answer:

When using other applications on a Windows operating system, the part of the window that remains visible all the time is the taskbar. The taskbar is a horizontal bar that is typically located at the bottom of the screen, although it can be moved to different locations.
The taskbar serves several important functions and provides quick access to various features and applications. Here are some key points about the taskbar:
- The taskbar displays the Start button on the far left side, which allows users to access the Start menu and launch applications.
- In the middle of the taskbar, you will find icons for any open or pinned applications, allowing users to easily switch between them.
- The system tray, also known as the notification area, is located on the right side of the taskbar. It displays the time and date, as well as icons for system and program notifications.
- The taskbar also includes other useful features such as the search bar, which allows users to quickly search for files, applications, and settings.
Overall, the taskbar remains visible at all times, even when using other applications, making it a convenient and accessible feature of the Windows operating system.

Where do deleted files go?
The deleted files on a computer typically go to the Recycle Bin. The Recycle Bin acts as a temporary storage location for deleted files, allowing users to recover them if necessary. Here is a detailed explanation:
1. Recycle Bin:
- When a file is deleted from a computer, it is not immediately permanently removed. Instead, it is moved to the Recycle Bin.
- The Recycle Bin is a special folder that holds all deleted files and folders until they are manually emptied or restored.
- It acts as a safety net, providing users with an opportunity to recover accidentally deleted files.
2. My Computer:
- My Computer, also known as This PC or File Explorer, is the main interface for accessing files and folders on a computer.
- While deleted files do not directly go to the My Computer location, the Recycle Bin is a part of the file system and can be accessed through My Computer.
3. Network:
- The Network refers to a collection of computers and devices connected together to share resources and communicate with each other.
- Deleted files on a network location may follow a different process depending on the network setup and permissions.
- In some cases, deleted files on a network may go to a network recycle bin or be permanently deleted.
4. All of the above:
- In the given options, option D "All of the above" is the correct answer because deleted files can go to the Recycle Bin, My Computer (through accessing the Recycle Bin), or the Network depending on the specific situation.
In conclusion, when files are deleted from a computer, they are typically moved to the Recycle Bin, which acts as a temporary storage location. However, the exact destination of deleted files may vary depending on the computer's settings and whether it is part of a network.

Operating Systems:
An operating system (OS) is a software that manages computer hardware and software resources and provides common services for computer programs. It acts as an intermediary between the computer hardware and the user.
Examples of Operating Systems:
There are several examples of operating systems, including:
1. Windows: Windows is a popular operating system developed by Microsoft. It is widely used on personal computers, laptops, and servers. Windows provides a user-friendly graphical interface and supports a wide range of applications and software.
2. Android: Android is a mobile operating system developed by Google. It is designed for smartphones, tablets, and other mobile devices. Android is an open-source platform and offers a wide range of applications and features.
3. DOS: DOS (Disk Operating System) is an early operating system developed by Microsoft. It was used in personal computers in the 1980s and early 1990s. DOS is a command-line based operating system and lacks a graphical user interface.
4. All of the above: The correct answer is D. All of the above options (Windows, Android, and DOS) are examples of operating systems.
Conclusion:
Operating systems are crucial for managing computer resources and providing a platform for running applications. Windows, Android, and DOS are all examples of operating systems, each serving different purposes and catering to various devices and user requirements.

The screen that appears after logging into a computer is called the Desktop. Here is a detailed explanation:
Desktop:
- The desktop is the primary screen that appears after you log in to your computer.
- It is the main workspace where you can access and organize your files, folders, and applications.
- The desktop typically consists of a background image or wallpaper, icons representing files and applications, and a taskbar at the bottom of the screen.
Start Menu:
- The Start Menu is a clickable button or icon located on the taskbar.
- Clicking on the Start Menu opens a menu that provides access to various features and functions of the computer, including applications, settings, documents, and power options.
- The Start Menu is not the screen that appears immediately after logging in.
Taskbar:
- The taskbar is a horizontal bar located at the bottom of the screen.
- It displays icons for currently running applications, a Start button, and other system notifications.
- The taskbar remains visible even when other windows or applications are open.
- While the taskbar is an important part of the desktop, it is not the actual screen that appears after logging in.
None of these:
- This option is incorrect as the screen that appears after logging in is indeed the desktop.
In conclusion, the correct answer is B: Desktop.