Computer Networks
CBSE · Class 12 · Computer Science
Flashcards for Computer Networks — CBSE Class 12 Computer Science. Quick Q&A cards covering key concepts, definitions, and formulas.
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Explore the full setWhat is a computer network?
Answer
A computer network is an interconnection among two or more computers or computing devices that allows them to share data and resources among each other. Examples include computers in a school lab conn…
What is a node in a computer network?
Answer
A node is any device that is part of a network and can receive, create, store or send data to different network routes. Examples include computers, servers, printers, routers, switches, and mobile pho…
What does PAN stand for and what is its range?
Answer
PAN stands for Personal Area Network. It connects personal devices like smartphones, laptops, tablets within an approximate range of 10 metres. Example: A mobile phone connected to laptop via Bluetoot…
Compare LAN and WAN in terms of geographical coverage and data transfer rates.
Answer
LAN (Local Area Network): Covers limited area like a room, building, or campus. High data transfer rates (10 Mbps to 1000 Mbps). WAN (Wide Area Network): Covers large geographical areas across countri…
What is a Metropolitan Area Network (MAN) and give an example?
Answer
MAN is a network that covers a larger geographical area like a city or town, extending up to 30-40 km. It connects multiple LANs together. Examples include cable TV networks and cable-based broadband …
What does MODEM stand for and what is its function?
Answer
MODEM stands for MOdulator DEModulator. It converts digital data (0s and 1s) from computers into analog signals for transmission, and converts received analog signals back to digital data. Essential f…
What is the difference between a Hub and a Switch?
Answer
Hub: Sends data to ALL connected devices, causing collisions when multiple devices send data simultaneously. Switch: Reads destination address and sends data only to the intended device. Can forward m…
What is the primary function of a Router in a network?
Answer
A router connects different networks (like LAN to Internet), analyzes data packets, decides routing paths, and can repackage data for different network types. It has advanced capabilities compared to …
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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
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