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Chapter Summary

Computer Networks

Jharkhand Board · Class 12 · Computer Science

Summary of Computer Networks for Jharkhand Board Class 12 Computer Science. Key concepts, important points, and chapter overview.

44 questions92 flashcards5 concepts

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A diagram showing how a repeater extends the range of a communication system by receiving, amplifying, and retransmitting signals.
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Overview

Computer networks are interconnections among two or more computers or computing devices that allow data and resources to be shared. A network may be small, such as devices connected in a room, or very large, such as the Internet. Networks use wired or wireless media, and devices in them are identifi

Key Concepts

A network is a group

A network is a group of two or more similar things or people interconnected with each other. In data communication, a node is any device in the networ

ARPANET was a 1960s U

ARPANET was a 1960s U.S. Department of Defence research project connecting academic and research institutions. The first message was sent between UCLA

PAN

PAN, LAN, MAN, and WAN are classified by geographical area. PAN covers about 10 metres, LAN can extend up to 1 km, MAN can extend up to 30-40 km, and

Modem stands for MOdulator DEModulator

Modem stands for MOdulator DEModulator. It converts digital bits into analog signals at the sender’s end and converts analog signals back into digital

An Ethernet card

An Ethernet card, also called a Network Interface Card, is a network adapter used to set up a wired network. It is mounted on the motherboard, support

Learning Objectives

  • Understand the meaning and use of computer networks
  • Recognise the evolution of networking from ARPANET to the modern Internet
  • Differentiate between PAN, LAN, MAN, and WAN
  • Identify the function of modem, NIC, RJ45, repeater, hub, switch, router, and gateway
  • Compare mesh, ring, bus, star, and tree or hybrid topologies

Frequently Asked Questions

What are the important topics in Computer Networks for Jharkhand Board Class 12 Computer Science?
Computer Networks covers several key topics that are frequently asked in Jharkhand 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 Computer Networks — Jharkhand Board Class 12 Computer Science?
Understand the core concepts first, then work through the 44 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.

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