MPESB Group · Bite-size lessons
Internet and Networking
About 6 min · Computer Knowledge · English
Time worked out from the lesson's 329 words at 150 words a minute, plus a minute for each question.
Internet and Networking forms a foundational component of the Computer Knowledge section in MPESB Group 1/2/3 examinations. Questions typically test your understanding of how computers connect and communicate, basic network types, browser functions, email operations, and search engine usage.
Key ideas
- Internet is a global network of interconnected computer networks using standardized communication protocols (TCP/IP). It is the "network of networks."
- Intranet is a private network within an organization accessible only to its members, while Extranet extends intranet access to authorized external users like partners or vendors.
- LAN (Local Area Network) covers a small geographical area like an office, school, or building. It offers high speed and is privately owned.
- WAN (Wide Area Network) spans large geographical areas—cities, countries, or continents. The Internet itself is the largest WAN. WANs use leased telecommunication lines.
- MAN (Metropolitan Area Network) covers a city or large campus—larger than LAN but smaller than WAN.
Watch out for
- Confusing HTTP with HTML → HTTP is a protocol for transferring data; HTML is a language for creating web pages. Remember: HTTP moves, HTML creates.
- Mixing up SMTP, POP3, and IMAP → SMTP is only for sending. POP3 downloads emails to your device (deletes from server). IMAP keeps emails on server (accessible from multiple devices).
- Confusing Router with Modem → Modem connects you to ISP and converts signals. Router distributes internet connection to multiple devices. Many home devices combine both functions.
Quick reference
- LAN < MAN < WAN — Remember by geographical size: Room → City → World
- SMTP sends, POP3/IMAP receive — "S" in SMTP = Simple (Simple Mail Transfer Protocol)
- URL format: protocol://domain-name/path (Example: https://esb.mp.gov.in/e_default.html)
- Modem = MOdulator-DEModulator — Converts digital↔analog signals
- DNS = Internet's phonebook — Converts names to numbers
Check yourself: 3 questions
1. Which of the following is NOT a web browser?
2. What does LAN stand for in computer networking?
3. Which protocol is primarily used for sending emails over the internet?
This lesson is cut from the topic's note, not rewritten. Fact-checked on 17 Oct 2026: an AI-assisted check of this note against cited sources; the errors it found were corrected that day. Some errors may remain. The questions are from Shishya's validated question bank.
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