Explanation

• Next Sheet: Ctrl + Page Down
• Previous Sheet: Ctrl + Page Up

Last updated 15-feb-2026

Explanation

An Excel workbook is a collection of worksheets 

It can also contain charts, macros, and other data

A workbook is the Excel file itself, typically with an .xlsx extension.

Contents: It holds one or more worksheets (grid-based spreadsheets).

Last updated 15-feb-2026

Explanation

An MS Excel sheet (or worksheet) consists of rows and columns that intersect to form cells

• Cells: The basic unit of an Excel sheet, where data is entered. 
• Rows: Horizontal lines that run across the sheet, numbered sequentially. 
• Columns: Vertical lines that run down the sheet, identified by alphabetical letters. 
• Workbook: A collection of one or more worksheets within a single Excel file. 

Last updated 15-feb-2026

Explanation

A Pivot Table is a powerful data summarization and analysis tool primarily associated with Microsoft Excel 

A pivot table allows you to extract the significance from a large, detailed data set.

Last updated 15-feb-2026

Explanation

In MS Word, the default alignment for a paragraph is Left (or Left-aligned)

This setting aligns text along the left margin, leaving the right edge ragged

Shortcut: Ctrl+L 

Last updated 15-feb-2026

Explanation

The correct method that cannot be used to edit the contents of a cell is  Pressing the Alt key. 

We can be edited a cell through Press the F2 key or Click the formula bar or Double click the cell.

Last updated 15-feb-2026

Explanation

The standard file format for PowerPoint presentations is .pptx,

It was introduced with Microsoft Office 2007 as part of the Office Open XML file formats.

Last updated 15-feb-2026

Explanation

Attenuation means reduction in power (strength) of light signal as it travels through an optical fiber.

It is mainly caused by:

• Absorption

• Scattering

• Bending losses

It is measured in decibels per kilometer (dB/km).

Last updated 15-feb-2026

Explanation

Multiple repeaters in a communication satellite are called transponders.

These devices are essential for receiving weak signals from Earth, amplifying them, changing their frequency, and retransmitting them back

Allowing the satellite to handle multiple communication channels simultaneously.

Last updated 15-feb-2026

Explanation

A complete graph is a type of graph in which every pair of distinct vertices (nodes) is connected by a unique edge.

If a graph has n nodes, a complete graph has n(n−1)/2 edges.

For example:

3 nodes → 3 edges

4 nodes → 6 edges

This ensures that all nodes are fully connected.

Last updated 15-feb-2026