Explanation

A liquid-crystal display  is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers.

Liquid crystals do not emit light directly,instead using a backlight or reflector to produce images in color or monochrome.

Explanation

An operating system is system software that manages computer hardware, software resources, and provides common services for computer programs. 

Explanation

Operating system is software that is required in order to run application programs and utilities.

Explanation

When you open an Excel workbook, there are three sheets by default, and the default name on the tabs are Sheet1, Sheet2, and Sheet3.

Explanation

Yahoo Inc. has announced that the company has stopped providing service in mainland China with effect from November 01, 2021, due to the increasingly challenging business and legal environment in the country.

With this Yahoo has ended its 22-year presence in the Chinese market.

Explanation

There is no option to set page border in Excel.

Explanation

Explanation

Mark the entries

Select the text you'd like to use as an index entry, or just click where you want to insert the entry.

On the References tab, in the Index group, click Mark Entry.

You can edit the text in the Mark Index Entry dialog box. 

Click Mark to mark the index entry.

Explanation

Encryption is a means of securing digital data using one or more mathematical techniques, along with a password or "key" used to decrypt the information.

Explanation

The process of dividing the disk into tracks and sectors is called as formatting.