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Important Questions

Data Communication

Odisha Board · Class 12 · Computer Science

Most important questions from Data Communication for Odisha Board Class 12 Computer Science board exam 2026. MCQs, short answer, and long answer questions with marks.

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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43 Questions·
multiple choicemultiple correct

Sample Questions

1multiple correct

Which of the following are examples of guided transmission media?

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Twisted pair cable, Coaxial cable, Optical fiber cable

Guided transmission media use physical cables/wires. Twisted pair, coaxial, and optical fiber are all physical cables. Radio waves and microwaves are unguided (wireless) media.

2multiple choice

In circuit switching, what happens before communication starts?

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A dedicated path is established

In circuit switching, a dedicated path is identified and established between sender and receiver before communication starts. All data follows this same path.

3multiple choice

Which wireless technology is used for short-range communication within 10 meters?

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Bluetooth

Bluetooth is a short-range wireless technology that works within 10 meters, used to connect devices like phones, headphones, keyboards, etc.

4multiple choice

Which mobile generation first introduced digital voice transmission?

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2G

2G mobile networks introduced digital voice transmission instead of analog signals used in 1G. This provided better call quality and enabled SMS services.

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Frequently Asked Questions

What are the important topics in Data Communication for Odisha Board Class 12 Computer Science?
Data Communication covers several key topics that are frequently asked in Odisha 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 — Odisha Board Class 12 Computer Science?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Data Communication?
There are 43 practice questions available for Data Communication. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

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

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