Overview

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Unlock the essential skills needed to understand and navigate today’s interconnected world with our comprehensive introduction to computer networks. In this course, you’ll explore how devices communicate and share resources, gaining insight into the foundational role networks play in modern life. You’ll discover different network types based on their geographical scope, and learn the strengths and limitations of various network topologies in terms of scalability, fault tolerance, and performance. A key highlight of this course is a clear, approachable introduction to the Open Systems Interconnection (OSI) model, breaking down each layer for easy understanding. You’ll also explore network segmentation and the latest in wireless technologies, equipping you with knowledge relevant to real-world applications. What makes this course unique is its practical focus and accessible explanations, designed for both beginners and those looking to refresh their knowledge. By the end of the course, you will confidently describe core concepts in network architecture, giving you a strong foundation for further study or career advancement in IT and networking.

Syllabus

Network Categories: LANs, WANs, and Cloud

In this module, you will describe the characteristics of Local Area Networks (LANs), Wide Area Networks (WANs), and cloud networking environments. You will identify the differences between these network types and explain how network models, segmentation, routing, load balancing, wireless technologies, IPv4 and IPv6 addressing, and transport protocols support communication across modern networks.

OSI Network Models

In this module, you will describe the Open Systems Interconnection (OSI) model and identify the functions performed by each of its seven layers. You will explain how the OSI framework supports interoperability between network devices and provides a foundation for understanding network communication and troubleshooting.

Network Models

In this module, you will describe the TCP/IP model and compare it with the OSI model. You will identify the functions of the TCP/IP layers and explain the differences between Layer 2 and Layer 3 networks and their roles in supporting data communication.

IP Addressing, Forwarding, and Routing

In this module, you will explain how IP addressing, packet forwarding, routing, and load balancing support network communication. You will recognize the purpose of routing and load balancing and describe how network devices direct traffic efficiently between destinations.

Comparing IPv4 and IPv6

In this module, you will compare IPv4 and IPv6 addressing schemes and identify the key differences between them. You will explain the limitations of IPv4, the need for IPv6, and the advantages provided by modern addressing standards.

Transport Layer

In this module, you will describe the role of the transport layer in end-to-end communication and compare the characteristics of Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). You will recognize how these protocols support different networking requirements and communication scenarios.

Network Segmentation

In this module, you will describe common network segmentation approaches and explain their benefits for performance, security, and manageability. You will identify the roles of technologies such as VLANs, VXLANs, and Virtual Routing and Forwarding (VRF) in creating logical network boundaries.

Wireless Network Technologies

In this module, you will describe how wireless networking technologies enable communication across devices and environments. You will identify key wireless standards and explain the capabilities of technologies such as Wi-Fi, Wi-Fi 6E, and 5G in supporting modern connectivity needs.

Summary and Graded Assessment for Network Architecture Fundamentals

In this module, you will review the key concepts covered throughout the course, including network categories, network models, IP addressing, routing, transport protocols, network segmentation, and wireless technologies. You will demonstrate your understanding of these topics by completing the graded assessment and applying the knowledge gained throughout the course.