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Data Communication

Haryana Board · Class 12 · Computer Science

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

50 questions88 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 · Haryana Board Class 12 Computer Science

Topics in Data Communication

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1. Concept of Communication and Components

  • Data communication means exchange of data between two or more networked or connected devices like laptops, PCs, printers, routers, and mobile phones.
  • Data can be text, image, audio, video, or multimedia.
  • Communication is the act of sending or receiving data.
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2. Capacity of Communication Media

  • The capacity of a channel is measured by bandwidth and data transfer rate.
  • Bandwidth of a channel is the range of frequencies available for transmission of data through that channel.
  • Higher bandwidth usually means higher data transfer rate.
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3. Types of Data Communication

  • Data communication is broadly classified into three types: simplex, half-duplex, and full-duplex.
  • Simplex communication is one-way communication.
  • Half-duplex communication is two-way communication, but not at the same time.
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4. Switching Techniques

  • Switching is used to route data through various nodes in a network.
  • Switching creates a temporary route for data transmission.
  • Two commonly used switching techniques are circuit switching and packet switching.

Key Concepts

Central concept: Exchange of data between two or more connected devices through a communication medium using protocols

Concept of communicationComponents of data communicationMeasuring capacity of communication mediaTypes of data communicationSwitching techniquesTransmission mediaWired transmission mediaWireless transmission media

Frequently Asked Questions

What are the important topics in Data Communication for Haryana Board Class 12 Computer Science?
Data Communication covers several key topics that are frequently asked in Haryana 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 — Haryana Board Class 12 Computer Science?
Understand the core concepts first, then work through the 50 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall 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 — Haryana Board Class 12 Computer Science Syllabus

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