Explanation

• Shortcut key to switch to the next/open window is Alt + Tab.
• It allows you to quickly move between open applications or windows.
• Hold Alt and press Tab to select another open window.

Additional information:

• Windows + Tab → Open Task View.
• Alt + F4 → Close the active window.
• Windows + D → Show or hide the desktop.
• Alt + Esc → Switch between open windows in their opening order.

Last verified on 07-08-2026

Explanation

• Shift + End – Select text from the cursor to the end of the current line

Additional information:

• Shift + Home – Select text from the cursor to the beginning of the current line
• Ctrl + Shift + End – Select text from the cursor to the end of the document
• End – Move the cursor to the end of the current line
• Ctrl + End – Move the cursor to the end of the document

Last verified on 20-07-2026

Explanation

• The standard arrangement of keys on a keyboard is called the QWERTY arrangement.
• The name QWERTY comes from the first six letters in the top alphabetic row: Q, W, E, R, T, Y.
• It was developed from the keyboard layout used in early typewriters.
• QWERTY became the most widely used keyboard layout.

Last verified on 07-08-2026

Explanation

• The output quality of a printer is measured by Dot Per Inch (DPI).
• DPI indicates the number of dots a printer can produce in one inch.
• A higher DPI generally means higher print resolution and sharper output.
• Common printer resolutions include 300 DPI, 600 DPI, and 1200 DPI.

Last verified on 07-08-2026

Explanation

• A Voice Response Unit (VRU) is an output device that produces an audio response using words or messages recorded on a magnetic medium.
• It converts stored voice messages into audible output for the user.

Additional information:

• Voice Recognition Unit is an input device used to recognize spoken words.
• Magnetic tape is a storage medium.

Last verified on 07-08-2026

Explanation

• The Operating System is built directly on the hardware.
• It acts as an interface between the computer hardware and application software.
• The OS manages resources such as the CPU, memory, storage, and input/output devices.
• Application software runs on top of the operating system.
• Examples of operating systems include Windows, Linux, macOS, and Android.

Last verified on 07-08-2026

Explanation

• Background color or effects applied to a document are not visible in Print Preview.

Additional information:

• In Microsoft Word, document views display content differently depending on the view mode.
• Normal View is mainly used for editing the document.
• Print Layout shows how the document will appear on the printed page.
• Web Layout displays the document as it would appear on a web page.

Last verified on 07-08-2026

Explanation

• Diagnostic software is used to detect, identify, and troubleshoot problems in a computer system.
• It can check hardware and software for errors or faults.
• Common examples include memory diagnostics, disk-checking, and system diagnostic tools.

Additional information:

• Utility software → Performs maintenance and optimization tasks.

Explanation

• Supercomputers are designed for maximum computational speed and complex calculations.
• Mainframe computers are designed to process huge volumes of data and support many users/tasks simultaneously.
• Supercomputers are commonly used in weather forecasting, scientific research, simulations, and space research.
• Mainframes are widely used in banking, airlines, government systems, and large organizations.

Last verified on 07-08-2026

Explanation

• Maximum number of columns in MS word: 63

Additional information:

• The minimum number of rows added in MS Word: 1
• The minimum number of columns in MS word: 1

Last verified on 29-05-2026