Explanation

• Microsoft Excel is Microsoft's spreadsheet program that can be used to organize, format, and calculate data.
• Microsoft Excel is a spreadsheet application used for calculations, charts, and data analysis

Last verified on 10-02-2026

Explanation

• The Undo feature in MS Word is used to discard the last changes made in a document.
• It allows users to reverse typing, formatting, or any editing mistakes.

Additional information:

• Redo: Re-applies the action that was undone
• Shortcut for Undo: Ctrl + Z

Last verified on 10-02-2026

Explanation

• Serial communication transmits data one bit at a time over a single channel or wire.
• It is ideal for long-distance communication because it reduces signal degradation and cost.
• Slower than parallel communication but more reliable over long cables.

Last verified on 09-02-2026

Explanation

• In programming and mathematics, operator precedence determines the order in which operations are performed.
• Multiplication (*) has higher precedence.
• Example: 2 + 3 * 4 → First multiply → 3*4=12, then add → 2+12=14.

Last verified on 09-02-2026

Explanation

• In MS Excel, a single page where data is entered is called a worksheet.
• Multiple worksheets make up an Excel workbook.
• Worksheets contain cells arranged in rows and columns for data entry and calculations.

Last verified on 09-02-2026

Explanation

• RAM (Random Access Memory) is the main memory of a computer where data and programs in use are temporarily stored.
• If a computer does not have enough RAM, it cannot run multiple programs efficiently.
• RAM is volatile memory, meaning it loses data when the computer is turned off.

Last verified on 09-02-2026

Explanation

• In a star topology, all devices are connected to a central device called a hub.
• The hub acts as a common connection point, transmitting data between devices.
• If the central hub fails, the entire network is affected.

Last verified on 09-02-2026

Explanation

• A stack is a linear data structure that follows LIFO (Last In, First Out) principle.
• push() → Adds an element to the top of the stack.
• pop() → Removes the element from the top of the stack.

Last verified on 09-02-2026

Explanation

• A variable is a named memory location that can store data which may change during program execution.
• Used to hold values, perform calculations, and control program flow.

Examples in programming:

• int age = 25; → age is a variable storing 25
• float price = 99.99; → price is a variable storing 99.99

Last verified on 09-02-2026

Explanation

• The <p> tag in HTML defines a paragraph.
• Browsers automatically add space before and after the paragraph text.
• It is used to structure text content on a webpage.

Additional information:

• <br> → Inserts a single line break.
• <hr> → Inserts a horizontal line.

Last verified on 09-02-2026