Demo: What is Internet

Duration: 3 min

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Inside: a video lesson and guided study material.

Module outline

  1. About the course: About the Course
  2. General Knowledge: Polity, Physics, Biology, State Wise GK, Chemistry, History, Geography, GK- Current Affairs, Indian Economy, Static General Knowledge, Environment, Evolution of Indian Banking (Banking & Financial Awareness)
  3. Mental Aptitude and Reasoning: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Permutation and Combination, Number System, Sequence and Series (Series), Speed Time and Distance, Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Vocabulary, Profit and Loss, Arithmetic, Mental Ability, Percentage, Algebra, Mensuration and Geometry, Age Problems, Clock, Calendar, Verbal Analogy (Word Based Analogy), Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Analogy, Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Selection Decision Table (Decision Making), Cubes & Dices, Blood Relations, Venn Diagram, Logical Sequence Of Words, Inequality, Directions (Direction Test), Data Arrangement, Facts, Inference and Judgements, Syllogisms, Seating Arrangements, Ranking, Order and Sequence
  4. CS | Computer Fundamentals: Basics of COA, Number System, Number Representation, C Fundamentals, Algorithm Analysis, Input Output Organisation
  5. CS | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, SQL
  6. CS | Workplace productivity Tools: MS Office Applications, Keyboard Shortcuts
  7. CS | Computer Networks: Introduction to CN, Data Communication, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Transport Layer Services, Application Layer, Hardware Basics, Network Security
  8. CS | The Internet: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Web Publishing & Hosting, Server Side & Security, Emerging Technologies
  9. CS | Emerging Technologies: Artificial Intelligence, Emerging Tech Trends, Introduction to OS, Windows OS, Linux OS, Unix OS, JavaScript-Basics
  10. CS | Boolean algebra: Digital Systems & Boolean Basics, Boolean Expression, Boolean Minimization, Logic Gates & Hardware
  11. CS | Data Structures: Introduction to DS, Array, Stack, Queue
  12. CS | Cryptography: Society, Law & Ethics, Cyber Threats and Malware Attacks, Role of Internet and Web Services, Security in Mobile and Wireless Computing, Electronic Data Interchange and E-Commerce, Physical Security and Cryptography Basics, Intrusion Detection Systems (IDS), Cyber Safety and Security
  13. UP Police Previous Year Papers:
  14. UP Police Full Mock Tests:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This lecture introduces the fundamental concept of the Internet by defining it as a global system of interconnected computer networks. The instructor begins by categorizing the Internet within the broader scope of network types, using visual examples such as 'Hospital LAN' and 'University LAN' to illustrate local area networks. The lesson progresses by demonstrating how these distinct local networks connect via Wide Area Networks (WANs) to form the larger Internet structure. The instructor emphasizes that the Internet is not a single network but a 'network of networks' linked by standard protocols, specifically TCP/IP. Visual diagrams show computers connected by arrows labeled 'Standard protocol' to explain how communication occurs across different systems. The session concludes with a formal definition displayed on screen, describing the Internet as a worldwide network using the standard Internet protocol suite to link billions of users.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor defines the Internet as a type of network, drawing examples like 'Hospital LAN' and 'University LAN' to show specific instances. Visual cues include the instructor writing 'Network -> City' and boxing local networks. The lesson transitions to illustrating how LANs connect via WANs, with the instructor drawing a diagram linking these networks and labeling the connection 'WAN'. The visual explanation moves from specific local examples to a broader diagram encompassing the Internet structure, explicitly writing 'Internet Devices Network' and drawing connections between computers.

  2. 2:00 – 2:30 02:00-02:30

    The final segment focuses on the technical definition of the Internet as a global system using standard protocols. The instructor draws two computer monitors connected by arrows labeled 'Standard protocol' to visualize communication. On-screen text provides the formal definition: 'Internet is a worldwide network of networks that uses the standard Internet protocol suite (TCP/IP) to link...'. This section reinforces the concept of interoperability between different networks through standardized communication rules.

The lecture establishes a clear progression from general categorization to specific technical definitions. Initially, the instructor grounds the abstract concept of the Internet in tangible examples like hospital and university networks. By visually connecting these Local Area Networks (LANs) through Wide Area Networks (WANs), the instructor demonstrates that the Internet is a hierarchical structure of interconnected systems. The lesson culminates in identifying TCP/IP as the critical standard protocol enabling this global connectivity. This pedagogical approach moves from concrete examples to abstract definitions, ensuring students understand both the physical structure and the logical protocols governing Internet communication.

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