 <h1>Congratulations! 🎉 </h1>
    <p style="color:#637381;">All done! You’ve completed another milestone.</p>

To continue, enter your details to log in.

We’ve sent a 6‑digit code to #MAIL_ADDRESS#\nPlease check your inbox or spam folder and enter the code below to continue.

Verification code sent

Thank you for the payment. You can now access {collectionName} by simply clicking the button below.

Yes, you’ve successfully ordered! 🎉

Unlock This Exclusive Course

It seems that your email address is not currently on the authorized access list. Please ensure you are using the email address that was invited, or contact the content owner for assistance.

Verification Required for Access

Course Overview and Learning Objectives

Welcome and Course Goals for Introduction to Computer Network - Part 1

Foundations: What Is a Computer Network and How It Evolved

Introduction to Computer Networks: Purpose, Benefits, and Core Ideas

A Brief Evolution of Networking for Modern Context

Network Models and Data Flow Across Layers

Layered Architectures: OSI and TCP/IP Models Explained

Types of Networks and Real-World Use Cases

Comparing PAN, LAN, MAN, and WAN for Appropriate Use

Personal Area Network (PAN): Scope and Applications

Local Area Network (LAN): Design Basics

Metropolitan and Wide Area Networks: MAN vs. WAN

Wide Area Network (WAN): Long-Distance Connectivity

Core Networking Devices and Their Functions

Endpoints and Physical Interfaces: Modem, Ethernet Card, and RJ45

Extending and Segmenting Networks: Repeater, Hub, and Switch

Routing Between Networks: Router and Gateway Fundamentals

Network Topologies and Design Trade-offs

Selecting Topologies: Mesh, Ring, Bus, Star, and Tree/Hybrid

Identifying Nodes: MAC and IP Addressing

Addressing Basics: MAC vs. IP and How They Work Together

Understanding MAC Addresses for Local Delivery

Understanding IP Addresses for Network Routing

Formative Practice: Quizzes

Quiz: Introduction and Evolution Fundamentals

Quiz: Network Models and Encapsulation

Quiz: Types of Networks and Use Cases

Quiz: Devices and Their Layers of Operation

Quiz: Topologies and Design Trade-offs

Course Feedback

End-of-Part-1 Survey: Learning Experience and Confidence Check

Build a rock-solid foundation in computer networking with Foundations of Computer Networking: Models, Devices, Topologies, and Addressing. Designed for higher secondary school students and beginners, this hands-on, example-driven course demystifies how data travels from one device to another—locally and across the globe. You’ll start with the big picture: what networks are, why they matter, and how they evolved from early point-to-point links to today’s Internet. Then, you’ll make sense of layered models (OSI and TCP/IP), seeing exactly how protocols like HTTP, TCP/UDP, IP, and Ethernet work together through encapsulation and decapsulation. Next, you’ll compare network types (PAN, LAN, MAN, WAN) to choose the right option for homes, schools, and cities, before exploring the core devices that power connectivity: modems, NICs, hubs, switches, routers, and gateways. You’ll also learn to visualize and select network topologies (star, bus, ring, mesh, and hybrids) based on cost, performance, reliability, and scalability. Finally, you’ll master addressing fundamentals—MAC vs. IP, ARP basics, IPv4 essentials, and a glimpse of IPv6—so you can identify nodes, trace paths, and troubleshoot confidently. With short quizzes, practical tips, and clear diagrams, this course builds the mindset and vocabulary you need to succeed in further networking, cybersecurity, or IT courses.

Foundations of Computer Networking: Models, Devices, Topologies, and Addressing

<div class="simple-box-wrapper">
    <div class="simple-box">
        <div class="column">
            <p>Computer networks are the invisible infrastructure behind messages, streaming, online classes, and collaborative work. This course establishes a rigorous foundation for understanding how those networks are defined, built, and operated, tailored for Higher Secondary School students preparing for further study in computing and engineering. Part 1 focuses on the essential building blocks: models that describe data flow, types of networks and where they fit, the devices that connect and direct traffic, common topologies used to design networks, and the addressing systems that identify every node. You will develop a layering mindset to interpret diagrams, follow data end-to-end, and compare technologies by performance, cost, scalability, and reliability.</p>

<p>The journey begins by clarifying what a computer network is—hosts, nodes, links, and media—then situates these concepts in a brief evolution from early point‑to‑point links to packet switching and the Internet. You will examine layered architectures through the OSI and TCP/IP models, map real protocols like HTTP, TCP/UDP, IP, and Ethernet to their layers, and trace encapsulation and decapsulation across the path between devices. With that model in hand, the course compares PAN, LAN, MAN, and WAN, matching each to real scenarios such as home use, school campuses, city networks, and intercity connectivity. You will study core devices—modems, NICs, RJ45 connectors, repeaters, hubs, switches, routers, and gateways—understanding their functions and the OSI layers at which they operate. Network design trade‑offs come to life through mesh, ring, bus, star, and tree/hybrid topologies, applied to practical small‑school designs. Finally, you will distinguish MAC and IP addressing, learn how local delivery and routing work, and gain introductory troubleshooting habits with ARP, IPv4 basics, subnets, gateways, and a glance at IPv6.</p>

<p>To support mastery, the course includes short quizzes after major topics—introduction and evolution, models and encapsulation, network types, devices, and topologies—so you can check understanding early and often. Study tips embedded throughout reinforce how to read network diagrams, reason layer by layer, and make structured comparisons among options. The part concludes with a brief survey to reflect on your learning experience and confidence, ensuring you are ready to progress to more advanced networking concepts with a strong, practical foundation.</p>
        </div>
    </div>
</div>
