ICSE Class 8 Computer Applications | 6. Networks by Abraham | Learn Smarter
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6. Networks

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Sections

  • 1

    What Is A Computer Network?

    A computer network connects multiple devices to share resources and communicate.

    Learning Practice

  • 1.1

    Benefits Of Networks

    Computer networks provide essential benefits such as resource sharing, communication, data management, and cost efficiency.

    Learning Practice

  • 2

    Types Of Networks

    This section outlines the different types of computer networks based on size and architecture, illustrating the importance of each type.

    Learning Practice

  • 2.1

    Based On Size And Coverage

    This section discusses the different types of computer networks based on their size and coverage, including LAN, MAN, and WAN.

    Learning Practice

  • 2.1.1

    Lan (Local Area Network)

    A Local Area Network (LAN) connects computers and devices in a limited geographic area, providing high-speed data access and resource sharing.

    Learning Practice

  • 2.1.2

    Man (Metropolitan Area Network)

    A Metropolitan Area Network (MAN) connects multiple Local Area Networks (LANs) within a city or large campus to facilitate communication and resource sharing.

    Learning Practice

  • 2.1.3

    Wan (Wide Area Network)

    Wide Area Networks (WANs) connect large geographical areas, enabling communication across countries or continents.

    Learning Practice

  • 2.2

    Based On Architecture

    This section covers the various network architectures, specifically the client-server and peer-to-peer models, highlighting their key features and applications.

    Learning Practice

  • 2.2.1

    Client-Server Network

    The client-server network model utilizes a central server to manage resources and services for multiple client machines.

    Learning Practice

  • 2.2.2

    Peer-To-Peer Network

    A peer-to-peer (P2P) network allows equal communication between all connected computers, enabling shared resources without a central server.

    Learning Practice

  • 3

    Components Of A Computer Network

    This section covers the hardware and software components essential for building and functioning of a computer network.

    Learning Practice

  • 3.1

    Hardware Components

    This section covers the essential hardware components that make up a computer network, including their functions and importance.

    Learning Practice

  • 3.1.1

    Network Interface Card (Nic)

    The Network Interface Card (NIC) is a crucial component that connects a computer to a network, enabling communication and resource sharing.

    Learning Practice

  • 3.1.2

    Modem

    A modem is a crucial hardware component that enables digital devices to connect to the internet by converting analog signals to digital and vice versa.

    Learning Practice

  • 3.1.3

    Router

    A router is a critical network device that connects different networks and routes data between them efficiently.

    Learning Practice

  • 3.1.4

    Switch

    This section explains the function and importance of switches in computer networks.

    Learning Practice

  • 3.1.5

    Hub

    A hub is a basic network device that connects multiple Ethernet devices, making them act as a single network segment.

    Learning Practice

  • 3.1.6

    Cables And Connectors

    Cables and connectors are essential components of computer networks that facilitate the physical connection and data transmission between devices.

    Learning Practice

  • 3.2

    Software Components

    This section discusses the software components required for computer networks, focusing on Network Operating Systems and communication protocols.

    Learning Practice

  • 3.2.1

    Network Operating System (Nos)

    A Network Operating System (NOS) is essential software that manages network resources and facilitates communication between interconnected devices.

    Learning Practice

  • 3.2.2

    Protocols

    Protocols are essential rules that govern communication between devices in a network.

    Learning Practice

  • 4

    Wireless Networks

    Wireless networks enable communication without cables, utilizing radio waves to connect devices.

    Learning Practice

  • 4.1

    Types

    This section explores various types of computer networks, emphasizing their classifications based on size and architecture.

    Learning Practice

  • 4.2

    Advantages

    Computer networks provide numerous advantages, allowing for resource sharing, efficient communication, data management, and cost savings.

    Learning Practice

  • 4.3

    Disadvantages

    This section discusses the disadvantages of computer networks, focusing on security issues, signal interference, and speed concerns.

    Learning Practice

  • 5

    The Internet

    The Internet is the largest Wide Area Network (WAN) that connects millions of computers globally, enabling various online services.

    Learning Practice

  • 5.1

    Services Of The Internet

    This section discusses the various services provided by the Internet, including email, web browsing, online shopping, cloud storage, social media, and e-learning.

    Learning Practice

  • 6

    Network Security

    Network security is crucial for safeguarding data from unauthorized access and potential attacks.

    Learning Practice

  • 6.1

    Security Measures

    This section covers various security measures necessary to protect computer networks from unauthorized access and data breaches.

    Learning Practice

References

ca ch6.pdf

Class Notes

Memorization

Revision Tests