Explanation

• A collection of related data is called a Database.
• A database stores and organizes related information so it can be easily accessed, managed, and updated.
• Examples include student records, employee information, and customer details.
• A DBMS (Database Management System) is software used to create and manage databases.

Last verified on 08-08-2026

Explanation

• Email is used to send and receive electronic messages over the Internet.
• It allows users to communicate instantly across the world.
• Emails can include text, documents, images, audio, and video attachments.

Additional information:

• Email stands for: Electronic Mail
• SMTP: Sending emails
• POP3: Receiving/downloading emails
• IMAP: Synchronizing emails across devices
• Email address format: username@domain.com

Last verified on 28-07-2026

Explanation

• LAN stands for Local Area Network.
• It is a network that connects devices within a limited geographical area.
• LAN is commonly used in homes, schools, laboratories, university campuses, and office buildings.
• It provides high-speed communication and resource sharing between connected devices.

Additional information:

• MAN: Metropolitan Area Network – Covers a city or metropolitan area
• WAN: Wide Area Network – Covers a large geographical area (countries/continents)

Last verified on 07-07-2026

Explanation

• IBM: International Business Machines Corporation
• Nickname: Big Blue
• Founded: June 16, 1911
• Headquarters: Armonk, New York, USA
• Nature: American multinational technology corporation
• Operations: Over 175 countries
• Founders: Herman Hollerith, Charles Ranlett Flint, Thomas J. Watson

Last verified on 03-09-2026

Explanation

• BCC stands for: Blind Carbon Copy
• Used in: Email communication
• Purpose: Hides recipient email addresses from other recipients

Additional information:

• CC (Carbon Copy): Recipients are visible to all
• BCC: Recipients are hidden from everyone except the sender

Last verified on 16-01-2026