Data Communication
CBSE · Class 12 · Computer Science
Complete topic list for Data Communication in CBSE Class 12 Computer Science. Key concepts, sub-topics, and what to focus on for board exams.
Topics in Data Communication
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
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
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)
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
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What are the important topics in Data Communication for CBSE Class 12 Computer Science?
Data Communication covers several key topics that are frequently asked in CBSE 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 — CBSE 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
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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