Explanation

DOCX is the newer version of DOC, the original official Microsoft Word file format.

Microsoft Word 97 - 2003 Document extension (.doc).

Microsoft Word 2007 to till date Document extension (.docx).

Explanation

A combination of 16 bits is called a "word".

It is a standard unit of data used in computing to represent information.

• Bit: a single binary digit (0 or 1)
• Nibble: 4 bits
• Byte: 8 bits
• Word: 16 bits
• Double Word: 32 bits

Explanation

The Ctrl+D key is used to open the Font dialog box with the focus on the Font combo box.

Ctrl+F12 opens a document in Word. 

The Ctrl+D key is used to open the Font dialog box.

Ctrl + H is used to open the Replace Dialog Box. 

Explanation

Header and footer commands are located on the Insert tab in MS Word

Function: Used for adding consistent information to the top or bottom of every page. 

Explanation

• A worksheet is an electronic spreadsheet that lets users to Calculate, Enter & Analyze data.
  

  A spreadsheet is a computer application for computation, organization, analysis and storage of data in tabular form.

  
  

Explanation

 Portrait and landscape are: Page Orientation 

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Portrait and Landscape are examples of page orientation in MS Word.

Page orientation is the direction in which a document is displayed or printed.

The two basic types of page orientation are portrait (vertical) and landscape (horizontal)

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Page orientation is the way in which a rectangular page is oriented for normal viewing. 

Explanation

NOS stands for Network Operating System.

It is software that manages network resources and allows computers to communicate within a network.

Such as file sharing and printer access.

Explanation

The Arithmetic Logic Unit (ALU) and the Control Unit (CU)

They are both components of the Central Processing Unit (CPU), which is the brain of a computer

Explanation

Alternatively referred to as Control W and C-w, Ctrl+W is a shortcut key most often used to close a program, window, tab, or document.

Explanation

• Ctrl + Y is used for redoing the last undone action in most applications.

Other related keys:

• - Ctrl + Z: Undo
• - Ctrl + X: Cut
• - Ctrl + C: Copy
• - Ctrl + V: Paste