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Chapter Summary

Data Communication

Jammu & Kashmir Board · Class 12 · Computer Science

Summary of Data Communication for Jammu & Kashmir Board Class 12 Computer Science. Key concepts, important points, and chapter overview.

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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Overview

Data communication is the exchange of data between two or more networked or connected devices such as laptops, PCs, printers, routers, and mobile phones. It depends on a sender, a receiver, a communication medium, a message, and protocols. The chapter explains how data moves through networks, how ca

Key Concepts

Data communication is the exchange

Data communication is the exchange of data between connected devices. The main components are sender, receiver, communication medium, message, and pro

Bandwidth is the range of frequencies

Bandwidth is the range of frequencies available for transmission of data through a channel. It is measured in Hertz. Higher bandwidth generally allows

Data transfer rate is the number

Data transfer rate is the number of bits transmitted between source and destination in one second. It is also called bit rate and is measured in bits

Simplex is one

Simplex is one-way communication. Half-duplex is two-way communication, but not at the same time. Full-duplex is two-way communication in both directi

Circuit switching creates a dedicated path

Circuit switching creates a dedicated path before communication starts, and all packets follow that path. Packet switching breaks a message into packe

Learning Objectives

  • Understand the meaning of data communication and its five main components
  • Distinguish between bandwidth and data transfer rate
  • Compare simplex, half-duplex, and full-duplex communication
  • Explain circuit switching and packet switching
  • Classify transmission media into guided and unguided forms

Frequently Asked Questions

What are the important topics in Data Communication for Jammu & Kashmir Board Class 12 Computer Science?
Data Communication covers several key topics that are frequently asked in Jammu & Kashmir 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 — Jammu & Kashmir 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.

More resources for Data Communication

All 13 chapters — Jammu & Kashmir Board Class 12 Computer Science Chapter Summary

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