Network Architecture Fundamentals

Overview

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

The complexity of a deployed network infrastructure depends on the scale of its deployment. Depending on the scale of deployment, they are primarily classified into three categories: LAN, WAN, and cloud. In this module, you will learn about their characteristics, similarities, and differences.

OSI Network Models

To define interoperability between network devices and software, the ISO created the OSI model to serve as a framework on which a suite of protocols can be built. In this module, you will learn about the popular OSI model and its seven layers.

Network Models

The TCP/IP model represents a protocol suite. It is similar to the ISO OSI model in that it uses layers to organize protocols. TCP/IP protocols are actively used in actual networks today. In this module, you will learn about the TCP/IP model and the different layers that constitute it.

IP Addressing, Forwarding, and Routing

In this module, you will learn the significance of IP addresses and how routers route packets to their destinations.

Comparing IPv4 and IPv6

IPv4 provides approximately 4 billion unique addresses. Although 4 billion is a large number of addresses, it is not enough to keep up with the growth of the internet. In this module, you will learn about IPv6, which tries to solve the problem of IP exhaustion.

Transport Layer

In this module, you will learn about the transport layer and its responsibilities.

Network Segmentation

Segmentation divides a computer network into smaller parts. The purpose is to improve network performance and security. Other terms that often mean the same thing are network segregation, network partitioning, and network isolation.

Wireless Network Technologies

One of the most important aspects of wireless operation is how Wi-Fi operates over the air. In this module, you will learn the basics of Wi-Fi technologies, Wi-Fi 6E and 5G.