CS Networking _241205_230317 PDF
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This document provides an overview of computer networks, including definitions, benefits, terminology, types of networks, and architectures. It also discusses communication media, network devices, client-server architecture, cloud computing, and the internet of things. It is a good introduction to networking for students or professionals.
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# Computer Networks ## Main Points 1. **Definition of a Network**: A network connects two or more computers to share resources like printers, CDs, and hard disks. 2. **Benefits of Networks**: Resource sharing, effective communication, reduced expenses, reliability, and central data storage. 3. **T...
# Computer Networks ## Main Points 1. **Definition of a Network**: A network connects two or more computers to share resources like printers, CDs, and hard disks. 2. **Benefits of Networks**: Resource sharing, effective communication, reduced expenses, reliability, and central data storage. 3. **Terminology**: Key terms include nodes (workstations), servers, network interface units (NIUs), IP addresses, domain names, and URLs. 4. **Structure of a Network**: Components include sender, receiver, message, transmission medium, and protocol. 5. **Types of Networks**: * **PAN (Personal Area Network)**: Small networks for personal devices. * **LAN (Local Area Network)**: Small networks within a limited area like a school or office. * **MAN (Metropolitan Area Network)**: Networks that cover a city. * **WAN (Wide Area Network)**: Networks that cover large geographical areas. 6. **Internet and Intranet**: The internet is a global network, while an intranet is a private network within an organization. 7. **Communication/Transmission Media**: Includes guided (wired) and unguided (wireless) media like twisted pair cables, coaxial cables, optical fiber cables, radio waves, microwaves, infrared waves, and satellite links. 8. **Network Devices**: Includes NIC (Network Interface Card), hub, switch, repeater, gateway, router, and wireless access point (WAP). 9. **Client-Server Architecture**: Data is stored on servers, and clients access this data. 10. **Cloud Computing**: Distributed data processing with advantages like less investment, high speed, reliability, scalability, and environmental support. 11. **Internet of Things (IoT)**: Network of physical objects connected to the internet to send and receive data.
