Explanation

Ctrl + W is a shortcut key to close a document in MS Word.

Additional Information:

Explanation

• A computer cannot ‘boot’ if it does not have the Operating System.
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• An operating system is system software that handles software and hardware resources and gives services to computer programs.
• The computer system requires an operating system for “boot”
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• A Loader in the computer systems is a unit of the operating system which is primarily responsible for loading the libraries and programs.
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• An assembler in the computer system is a program that interprets software programs written using “assembly language” into “machine language”.
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Explanation

Troposphere is the lowest layer of the atmosphere where all weather phenomena occur and where we live.

Exosphere is the outermost layer, gradually merging into space, containing very thin air and satellites.

Explanation

Clean means صاف

Dirty means گندا

Explanation

Explanation

Hard disk storage devices can store a maximum amount of data.

It has the highest capacity to store data up to 2 Terabytes.

Hard Disk is an electromechanical data storage device that stores and retrieves digital data using magnetic storage.

Explanation

Mandarin Chinese has the highest number of native speakers.

It primarily due to China's large population.

While English is widely spoken as a second language.

It is the most common lingua franca globally, it does not have as many native speakers as Mandarin.

Explanation

A hard disk is a secondary storage device used to store data permanently.

RAM and ROM are primary storage (main memory).

Diodes and Semiconductors are basic electronic components.

Explanation

Ability means اہلیت

Inability means نااہلی

Incapability meansنااہلیت 

Explanation

LINUX is a free and open-source operating system.

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closed source software for commercial use :

• are Microsoft Office,
• Adobe Acrobat,
• McAfee anti-virus software,
• and so on. *****