Computer Networks for Dummies

Hey, do you wish to learn about networks and have no prior understanding? Computer Networks for Dummies is your perfect first step! This book sets no prerequisites and provides a comprehensive yet basic understanding. You will learn fundamental concepts of a network and how to set up a home Wi-Fi network, as well as troubleshoot and repair malfunctioning systems with ease. The knowledge gained from this book will help you build confidence.

If you're uncertain about pursuing networking as a career, this book assists you in making a decision regarding your chosen profession. With job opportunities available starting at $50,000, explore the various responsibilities entrusted to network engineers and consider future projects, from 5G technology to intelligent houses. This book offers knowledge enabling you to decide on further pursuing tech, or managing your network like an expert.

Chapter 1: Welcome to the World of Networking

What Is a Computer Network?

Imagine a bustling post office with letters going from one person to another based on addresses and being delivered by the mail carriers. A computer network is just like that post office, conveying data, emails, videos, web pages, and others between computers, phones, and devices instead of letters. A network is a group of devices called nodes linked together, generally by wires or cables or wireless signals to collaborate on sharing information. How these networks work, we’ll cover it all from the Wi-Fi in your house to the huge global network known as the Internet. You don’t have to be super tech-savvy to get it. We’ll be super easy and fun, and By the end, you’ll know enough to make up your mind if becoming a Network Engineer is what you want to do. Let us see what this is all about.

Why Networks Matter in Everyday Life?

Networks happen everywhere. Anytime you watch streaming content on Netflix, video-call a friend, or conduct an online banking transaction, a network is being used. This is why they matter so much:

• Communication: E-mailing, photo-sharing, real-time chatting – all made possible because of networks.

• Work and Play: Online jobs and online gaming – both owe their existence to networks.

• Information Sharing: It is the networks that power the Internet that put the world’s knowledge at your disposal.

• Home: Smart thermostats, smart doorbells, smart fridges Without networks, our world of bits and bytes would cease to exist. This book will show you how they work and how to make them work for you.

A Brief History of Networking

Network did not happen overnight, here is a synopsis of events:

• In 1960, US department of Defense created a new mean of information called ARPANET, an early network that serves as the basis for the Internet.

• The 1980s saw the introduction of Local Area Networks (LANs) for personal computer connections in workplaces and educational institutions.

• 1990s: Wi-Fi starts to appear and the World Wide Web makes the Internet available to everyone.

• The 2000s and Beyond: Networks are a part of everyday life thanks to smartphones, cloud computing, and the Internet of Things (IoT).

Networks are smarter, faster, and more important than ever in the modern world. We won't bore you with history lessons, but understanding the origins of networks makes it easier to see how powerful they are.

What You’ll Learn in This Book

Even if you've never handled a router, this book is your resource for learning about computer networks. What we will discuss is as follows:

• The Fundamentals: Describe networks, their architecture, and the hardware that powers them.

• Data movement: We will cover here OSI model and TCP/IP protocols.

• Internet and Wi-Fi: Creating a small network and will surf the internet.

• Staying Safe: Keep your information safe from prying eyes and hackers.

• Troubleshooting: Solving typical network issues.

• The Future: Learn about the upcoming developments in networking, such as 5G and smart cities.

By the end, you’ll be able to talk about networks with confidence, set up your own Wi-Fi, and maybe even impress your tech-savvy friends. Let’s dive in!

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