Data Communication
Karnataka Board · Class 12 · Computer Science
Flashcards for Data Communication — Karnataka Board Class 12 Computer Science. Quick Q&A cards covering key concepts, definitions, and formulas.
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Explore the full setWhat is Data Communication? Define it with its main components.
Answer
Data Communication refers to the exchange of data between two or more networked or connected devices. It involves transmitting data (text, image, audio, video, multimedia) from one device to another o…
List and explain the five essential components of data communication.
Answer
1. Sender: Device that sends data (computer, mobile, etc.) 2. Receiver: Device that receives data (printer, laptop, etc.) 3. Message: The data/information being transmitted 4. Communication Media: Pat…
What is Bandwidth? How is it measured and what are its units?
Answer
Bandwidth is the range of frequencies available for transmission of data through a channel. It is the difference between maximum and minimum frequency in composite signals. Higher bandwidth = higher d…
Calculate the required data rate: A user uploads 10 pages in 20 seconds. Each page has 1600 characters, each character is 8 bits.
Answer
Required data rate = (10 × 1600 × 8) ÷ 20 = 128,000 ÷ 20 = 6,400 bps = 6.25 Kbps Formula: Data rate = (Total bits) ÷ (Time in seconds)…
What are the units of Data Transfer Rate? Write the conversion formula.
Answer
Data Transfer Rate is measured in bits per second (bps) Conversions: 1 Kbps = 2¹⁰ bps = 1024 bps 1 Mbps = 2²⁰ bps = 1024 Kbps 1 Gbps = 2³⁰ bps = 1024 Mbps 1 Tbps = 2⁴⁰ bps = 1024 Gbps Note: MBps = Meg…
Compare Simplex, Half-duplex, and Full-duplex communication with examples.
Answer
Simplex: One-way communication (keyboard to computer, IoT control) Half-duplex: Two-way but not simultaneous (walkie-talkie, one talks while other listens) Full-duplex: Two-way simultaneous communicat…
What is Circuit Switching? How does it work?
Answer
Circuit Switching establishes a dedicated path between sender and receiver before communication starts. This path is a connected sequence of links between network nodes. All packets follow the same es…
Explain Packet Switching and its advantages over Circuit Switching.
Answer
Packet Switching breaks messages into smaller packets that are transmitted independently. Each packet has a header (destination address) and message part. Different packets may take different routes.
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Sources & Official References
- Karnataka SSLC — kseeb.kar.nic.in
- Dept of Pre-University Education, Karnataka
- National Education Policy 2020 — education.gov.in
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