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Data Communication

Karnataka Board · Class 12 · Computer Science

Complete topic list for Data Communication in Karnataka Board Class 12 Computer Science. Key concepts, sub-topics, and what to focus on for board exams.

43 questions21 flashcards5 concepts

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An illustration showing various computing devices (computer, printer, server, switch) connected to form a network, exchanging data over a communication medium.
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4 Topics · Karnataka Board Class 12 Computer Science

Topics in Data Communication

1

11.1 Concept of Communication & Components

  • Data Communication = Data + Communication (exchange of data between networked devices)
  • Examples of communicating devices: computers, mobile phones, laptops, printers, servers, switches
  • Five essential components: Sender, Receiver, Message, Communication Medium, Protocol
2

11.2 Measuring Capacity of Communication Media

  • Channel capacity measured by Bandwidth and Data Transfer Rate
  • Higher bandwidth = Higher data transfer rate
  • Bandwidth: range of frequencies available for transmission
3

11.3 Types of Data Communication

  • Three types: Simplex, Half-duplex, Full-duplex
  • Simplex: One-way communication (keyboard to computer, remote to TV)
  • Half-duplex: Two-way but not simultaneous (walkie-talkie)
4

11.4 Switching Techniques

  • Alternative to dedicated connections in large networks
  • Two main types: Circuit Switching and Packet Switching
  • Circuit Switching: dedicated path established before communication

Key Concepts

Five essential components make data communicationThree types of communication modes existCircuit Switching establishes a dedicated pathMedia is classified as Guided (wired)Bandwidth is the range of frequencies

Frequently Asked Questions

What are the important topics in Data Communication for Karnataka Board Class 12 Computer Science?
Data Communication covers several key topics that are frequently asked in Karnataka Board Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Data Communication — Karnataka Board Class 12 Computer Science?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All 13 chapters — Karnataka Board Class 12 Computer Science Syllabus

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