Computer Quiz: Test Your Basic Intelligence

The full form of CPU is Central Processing Unit. The CPU is the primary component of a computer that performs most of the processing inside the computer. It is responsible for executing instructions, performing calculations, and managing the flow of data within the computer system. The term "Central" refers to its central role in coordinating and controlling the operations of the computer system.

SMPS stands for Switch Mode Power Supply. This is a type of power supply that uses switching devices such as transistors to regulate the output voltage. It is known for its efficiency and compact size compared to traditional linear power supplies. Switch Mode Power Supplies are commonly used in electronic devices such as computers, televisions, and mobile phones.

DVD (Digital Versatile Disc) is indeed a secondary storage device. Secondary storage devices are used to store data for a longer period of time and are non-volatile, meaning the data is retained even when the power is turned off. DVDs are commonly used to store large amounts of data, such as movies, software, or backup files. They are portable and can be easily accessed on various devices, making them a popular choice for secondary storage.

Printer is an output device because it takes electronic data from a computer and produces a physical copy of it on paper or other media. It allows users to obtain a tangible representation of digital information, such as documents, images, or graphics. Scanners, on the other hand, are input devices that convert physical documents or images into digital data that can be stored or manipulated by a computer. "Print" is not a specific device and "None of these" is an incorrect option as printers are indeed output devices.

CD is indeed an optical storage device. Optical storage devices use laser technology to read and write data on optical discs, such as CDs. CDs have a reflective layer that stores data in the form of pits and lands, which are read by a laser beam. This technology allows CDs to store large amounts of data and make it easily accessible for playback or data transfer. Therefore, the statement "CD is Optical Storage Device" is true.

The printed output from a computer is referred to as a hard copy. This term is used to distinguish physical copies of documents or images that are printed on paper, as opposed to soft copies which are electronic versions displayed on a screen. Hard copies are tangible and can be physically handled and stored, making them useful for archival purposes or when a physical document is required.

The correct answer is CTRL+V. This shortcut key is used to paste content that has been previously copied or cut. It is commonly used in Microsoft Office applications such as Word, Excel, and PowerPoint. By pressing CTRL+V, the content from the clipboard is inserted at the current cursor position.

The shortcut key CTRL + A is used to select all contents of a page. This combination allows the user to quickly highlight and select all text, images, and other elements on a page with just one keystroke. This is a commonly used shortcut in various applications and web browsers to quickly perform actions such as copying, cutting, or deleting all selected content.

RAM stands for Random Access Memory. It is a type of computer memory that can be read from and written to by the computer's processor. RAM is used to store data that is actively being used by the computer, providing quick access to this data for faster processing. It is a volatile memory, meaning that its contents are lost when the computer is turned off or restarted. RAM is an essential component in a computer system and plays a crucial role in its performance.

A flash drive is a portable storage device that uses flash memory to store data. It is a small, compact device that can be easily plugged into a computer's USB port. Pen drive is another term for a flash drive, so it is the correct example of a flash drive. Hard disk and RAM are not examples of flash drives as they are different types of storage devices. "None of these" is not the correct answer as pen drive is a valid example of a flash drive.

The correct answer is Output Unit because an output unit is a device that is used to display or output data and information from a computer. It can include devices such as monitors, printers, speakers, and projectors.

A hard copy refers to a physical printout of a document or image. It is produced by a printer, which is a device that takes electronic data from a computer and transfers it onto paper. Scanners are used to convert physical documents or images into digital format, while computers and CPUs are responsible for processing and storing data. Therefore, the correct answer is printer as it is the device specifically designed to produce hard copies.

The extension of Notepad files is TXT. This is because Notepad is a basic text editor that saves files in plain text format, which is denoted by the .txt extension. The other options (TST and TEXT) are not commonly used extensions for Notepad files. "All of the above" is not the correct answer as only TXT is the correct extension.

A computer outputs information as a result of its processing. Data is the raw input that is processed by the computer, instructions are the commands given to the computer to perform specific tasks, and excursion is not a term commonly associated with computer output. Therefore, the correct answer is information.

RAM (Random Access Memory) is a type of primary memory. It is a volatile memory that stores data and instructions that are actively being used by the computer's processor. RAM is faster than secondary storage devices like hard disks, pen drives, and DVDs, allowing for quick access to data and efficient execution of programs. Unlike secondary storage devices, RAM loses its data when the computer is powered off or restarted. Therefore, RAM is considered a primary memory as it is directly accessible by the processor and plays a crucial role in the overall performance of the computer.

The Clip Art option in MS Office is situated under the "Insert" tab. This tab contains various options for inserting different types of objects, such as pictures, shapes, charts, and clip art. Therefore, the correct answer is "Insert."

Pressing the CTRL + + shortcut key in MS Paint increases the size of the eraser. This shortcut allows users to quickly and easily adjust the size of the eraser tool without having to manually select a larger size from the toolbar. It provides a convenient way to increase the eraser size for more efficient editing and erasing in MS Paint.

The shortcut key ALT+TAB is used to switch between open applications on a computer. When this key combination is pressed, a small window appears on the screen showing all the open applications. By repeatedly pressing the TAB key while holding down the ALT key, the user can cycle through the applications and select the one they want to switch to. This shortcut is commonly used to quickly switch between different programs or windows without using the mouse.

The correct answer is ROM. ROM stands for Read-Only Memory, which is a type of computer memory that stores data that cannot be modified or erased. It is commonly used to store firmware or software instructions that are permanently written during manufacturing and cannot be changed by normal computer operations. The image is likely representing a ROM chip, which is a physical component that contains the ROM memory.

To open DOS from Run in Windows, we have to type "CMD". CMD stands for Command Prompt, which is a command-line interpreter that allows users to interact with the operating system by executing commands. It provides a text-based interface where users can run various commands to perform tasks and access system utilities. By typing "CMD" in the Run dialog box, the Command Prompt window will open, allowing users to execute commands and perform operations in the DOS environment.

The correct answer is Page Layout because the "Page border" option is typically found in the Page Layout menu. This menu usually contains various options related to the layout and formatting of the page, including page borders.

A hard disk is used as a primary storage device. It is a non-volatile storage device that stores data magnetically on rotating disks. It is commonly used in computers and provides fast access to large amounts of data. Unlike floppy disks or magnetic drums, a hard disk has a larger storage capacity and is more reliable. Therefore, it is considered as the primary storage device for storing and retrieving data in a computer system.

The correct answer is XLS. XLS is the file extension used for Microsoft Excel 2003. It stands for Excel Spreadsheet and is compatible with Excel versions up to 2003.

RAM, which stands for Random Access Memory, is indeed a type of memory that allows both reading and writing of data. It is a volatile memory that is used by a computer to temporarily store data that is actively being used by the CPU. This data can be read from and written to at high speeds, making RAM an essential component for the smooth functioning of a computer system. Therefore, the statement "RAM is a Read/Write Memory" is correct.

CLS stands for "Clear the Screen". This command is commonly used in command-line interfaces and programming languages to clear the contents of the screen or console window. It helps in providing a clean and organized interface for the user by removing any previous output or clutter on the screen.

The brain of any computer system is the CPU (Central Processing Unit). The CPU is responsible for executing instructions, performing calculations, and coordinating the activities of all the other hardware components in the computer. It acts as the control center and processes data and instructions from the memory, performs calculations, and sends the results back to the memory. The CPU is crucial for the overall functioning of the computer system and is often referred to as the brain because of its vital role in processing and managing data.

Subscript is not a font style because it is a formatting option that lowers the text below the baseline, typically used for mathematical or chemical formulas. Bold, italics, and regular are all font styles that modify the appearance of the text by changing its weight, slant, or default style respectively.

All of the given options are input devices. A light pen is a handheld device that is used to select and interact with objects on a computer screen by detecting the light emitted from the screen. MICR (Magnetic Ink Character Recognition) is a technology used to read characters printed with magnetic ink, typically found on checks, and convert them into machine-readable form. A trackball is a pointing device that consists of a ball that can be rotated to move the cursor on the screen. Therefore, all of these devices are used to input data or commands into a computer system.

The command "MD" creates a directory or sub-directory. This command is used in the command prompt or terminal to make a new directory or sub-directory within the current directory. It is a shorthand for "Make Directory" and is commonly used in operating systems like Windows.

The command "DIR" lists the contents of the current directory of a disk. This command is commonly used in command line interfaces to display a list of files and folders within the current directory. It provides information such as file names, sizes, and dates. By using the "DIR" command, users can quickly view the contents of their current directory without having to navigate through folders manually.