Explanation

• Junk email is unwanted and unsolicited email sent in bulk.
  • It is commonly used for ads, scams, or fake promotions.
  • The standard other name for junk email is Spam.

Additional information:

• Spoof means pretending to be another sender (email spoofing).
• Spam filters are used in email services to automatically block junk mail.

Last verified on 16-02-2026

Explanation

• SMTP is the standard protocol used to send emails across the internet.
• SMTP stands for Simple Mail Transfer Protocol.

Last verified on 16-02-2036

Explanation

A collection of related data is called a database.

Purpose: Databases organize data for easy access and manipulation.

Structure: They often consist of tables with rows (records) and columns (fields/attributes).

Last updated 15-feb-2026

Explanation

The F4 key is commonly used to repeat the last action in programs like Microsoft Word and Excel.

For example, if you format text or perform a specific action, pressing F4 will repeat it.

Last updated 15-feb-2026

Explanation

DOS stands for disk operating system

It is a command-line, text-based operating system designed to manage files 

Dennis Ritchie is the father of MS-DOS.

MS-DOS was developed in 1982.

Explanation

Bandwidth refers to the amount of data transmitted per second.

It is measured in bits per second (bps).

It indicates the speed or capacity of a network connection.

Last updated 15-feb-2026

Explanation

In a network with 25 computers, a full mesh topology requires the most extensive cabling. 

Mesh Topology: Every node is connected to every other node, creating 300 unique connections for 25 computers.

Last updated 15-feb-2026

Explanation

The internet, large corporate networks, and banking networks are common examples of WANs

A WAN can cover country, continent or even a whole world.

Other examples of WAN are mobile broadband connections such as 3G, 4G etc.

Last updated 15-feb-2026

Explanation

A single page of a PowerPoint presentation is called a slide

Additional information

Slide deck: collection of slides that are used together.

'.ppt' extension to save a presentation file.

F5 key : start the slideshow of a PowerPoint presentation.

Last updated 15-feb-2026

Explanation