Internet and Web — Chapter Summary
CBSE · Class 12 · Informatics Practices
Summary of Internet and Web for CBSE Class 12 Informatics Practices. Key concepts: A network is a group, LAN covers a small and Modem stands for MOdulator.
Interactive on Super Tutor
Studying Internet and Web? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for chapter summary and more.
Free trial, no card needed.
Overview
Computer networks connect two or more devices so that data and resources can be shared. Networks may be small or large, wired or wireless, and they use devices such as modems, NICs, repeaters, hubs, switches, routers, and gateways. The Internet is the largest WAN, while the World Wide Web is a colle
Key Concepts
A network is a group
A network is a group of two or more similar things or people interconnected with each other. A computer network is an interconnection among two or mor
LAN covers a small geographical area
LAN covers a small geographical area and can extend up to 1 km. Its data rate usually varies from 10 Mbps to 1000 Mbps. MAN covers a city or town, has
Modem stands for MOdulator DEMolulator
Modem stands for MOdulator DEMolulator. It converts digital data into analog signals at the sender end and converts analog signals back into digital d
An Ethernet card
An Ethernet card, also called a Network Interface Card, is a network adaptor used to set up a wired network. It is mounted on the motherboard, has a u
A repeater is an analog device
A repeater is an analog device that regenerates a weakened signal on a cable and puts it back on the cable. Signals can travel about 100 m before weak
Learning Objectives
- Understand the meaning of network and computer network
- Differentiate between LAN, MAN, and WAN
- Identify the functions of common networking devices
- Explain common network topologies and their features
- Distinguish between the Internet and the World Wide Web
Frequently Asked Questions
What are the important topics in Internet and Web for CBSE Class 12 Informatics Practices?
How should I revise Internet and Web for the CBSE Class 12 board 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.
More resources for Internet and Web
Practice Quiz
Test yourself with a quick quiz
Important Questions
Exam-style questions with answers
Revision Notes
Key points for last-minute revision
Concept Maps
See how topics connect
Study Plan
Step-by-step plan for this chapter
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Internet and Web chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for CBSE Class 12 Informatics Practices. Free to start, no card needed.