Explanation

• An Operating System (OS) is System software.
• It manages hardware resources and provides a platform for running application software.

Functions of an Operating System:

• Allocates resources
• Monitors activities
• Manages disks and files

Explanation

The Operating System (OS) handles organizing, storing, retrieving, and managing files and directories.

It provides user interfaces like File Explorer and supports commands for file manipulation

Explanation

LAN stands for local area network

It is a collection of devices connected together in one physical location

For example"

• school
• laboratory
• university campus 
• office building.

LAN covers can be small or large from home network and enterprise network

Additional Information

WAN stands for wide area network.

MAN stands for Metropolitan Area 

WANs and MANs connect many LANs together

WANs and MANs cover a large geographical area

Explanation

Phishing is a type of cybercrime where attackers send fraudulent emails or messages designed to trick individuals into providing sensitive information,

such as:

Passwords

Credit card numbers

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).