Looking for comprehensive PGDCA (Post Graduate Diploma in Computer Applications) notes on Introduction to Internet for the 2026–27 academic session? Access complete theory explanations, short notes, long analytical answers, objective MCQs, and exam-oriented solutions covering internet architecture, TCP/IP vs OSI model, IP addressing (IPv4 vs IPv6), DNS working, WWW, HTML basics, web browsers, search engines, and internet security fundamentals tailored for university diploma exams.
1. Introduction to Internet
The Internet is the global backbone of modern communication, commerce, and information sharing.
Definition for Exam:
The Internet is a massive, global network of interconnected computers and electronic devices that communicate with each other using standardized network protocols.
Key Characteristics:
- Decentralized Network: No single organization or government owns or controls the entire Internet.
- ARPANET: The origin of the Internet, created by the U.S. Department of Defense in 1969.
- Client-Server Architecture: Computers requesting data are Clients, and computers storing/providing data are Servers.
2-Mark Questions
Q1. Define the term Internet.
Answer: The Internet is a global, decentralized network of interconnected computer devices that exchange data using standardized communication protocols like TCP/IP.
Q2. What is ARPANET?
Answer: ARPANET (Advanced Research Projects Agency Network) was the world’s first operational packet-switching network, created by the U.S. Department of Defense in 1969. It is considered the predecessor of the modern Internet.
PGDCA Introduction to Internet Notes
PGDCA Internet Concepts Important Questions 2026-27
3-Mark Questions
Q3. Differentiate between Client-Server Architecture and Peer-to-Peer (P2P) Architecture.
Answer:
- Client-Server Architecture: Centralized setup where Client devices request resources/services and dedicated Server computers store and provide them (e.g., Web browsing).
- Peer-to-Peer (P2P) Architecture: Decentralized setup where every connected computer acts as both a client and a server, sharing resources directly without a central server (e.g., Torrent networks).
- Control & Security: Client-server setups offer centralized data management and higher security, whereas P2P networks are harder to secure centrally.
Introduction to Internet PGDCA Syllabus Question Answer
🌐 PGDCA Exam Preparation Notice: This page provides curated PGDCA (Post Graduate Diploma in Computer Applications) Introduction to Internet Study Material & Solutions updated for the 2026–27 academic session. This complete guide features key conceptual definitions, networking protocol diagrams, IP addressing breakdowns, and high-yield exam questions designed to help you secure top marks in your diploma examinations.
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