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Computer Networking First-Step:

An Introductory Guide to Understanding Wireless and Cloud Technology, Basic Communications Services and Network Security for Beginners

Copyright 2019 - All rights reserved.

This content is provided with the sole purpose of providing relevant information on a specific topic for which every reasonable effort has been made to ensure that it is both accurate and reasonable. Nevertheless, by purchasing this content you consent to the fact that the author, as well as the publisher, are in no way experts on the topics contained herein, regardless of any claims as such that may be made within. As such, any suggestions or recommendations that are made within are done so purely for entertainment value. It is recommended that you always consult a professional prior to undertaking any of the advice or techniques discussed within.

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Table of Contents

Description

Introduction

Congratulations on purchasing Computer Networking First-Step: An Introductory Guide to Understanding Wireless and Cloud Technology, Basic Communications Services and Network Security for Beginners and thank you for doing so.

The following chapters will discuss the basics of computer networking. In todays world where the internet is ruling on top of everything, it is important for you to know the basics otherwise; you wont be able to stay ahead of others. Although it has been 40 years or so since the advent of the internet, wireless standards are attaining great heights even today. The purpose of this book is to provide you with a concise overview of what the world of computer networking is like and some of the major topics that will help you get started.

You will learn about a variety of transmission methods and also some of the common security threats that need to be dealt with. This is quite a fascinating field and I have tried to place it all in a way that it doesnt seem jargon to you. When it comes to establishing new infrastructure in the world of networking, wireless networks have a big role to play and you will understand it once you read the entire book. This particular sector of computer networking has received a considerable amount of attention from the R & D sectors as well.

There are plenty of books on this subject on the market, thanks again for choosing this one! Every effort was made to ensure it is full of as much useful information as possible, please enjoy!

Chapter 1: Introduction to Wireless Technology

The present time might have let you allowed to be familiar with the term wireless technology. The term wireless technology has a wide circumference to cover in. However, in short, it can be described as connecting people or devices to communicate with each other or transfer data or power without any cable or wire, the technology is called wireless technology. So, to begin with, this new technology, lets know about its brief history over the past decades.

Small History of Wireless Technology

The root of wireless technology was contained with Heinrich Hertz, a German physicists discovery of electromagnetic waves. When he was experimenting with electromagnetic waves between 1885 and 1889, he observed the following:

• the length and velocity of the wave and
• the nature of vibration and susceptibility of the wave to reflection and refraction were similar to that of the heat and light waves.

With his findings, he proved that heat and light are electromagnetic waves. This electromagnetic wave was called the Hertzian wave after the name of Heinrich Hertz and later on, it was told as a radio wave.

The First Wireless Communication

Alexander Graham Bell and Charles Sumner Tainter invented the first photophone in 1880. The photophone was a type of telephone which was conducted through modulated light beams to communicate audio conversation.

Wireless Telegraphy with Long-distance Radio transmission

Italian electrical engineer, Guglielmo Marconi is a pioneer, who worked for a long-time on the long-distance radio transmission. Finally, Marconi worked with German physicist Karl Ferdinand Braun and developed their milestone invention of long-distance wireless telegraphy and they jointly shared the Nobel Prize in 1909.

The Radio, Television, and Satellite

With the development of Marconis long-distance radio transmission, the radio has emerged at the beginning of the 20th century. Later on, television has come which receives the broadcasted audio-visual communication without any wire. Satellite is also an example of wireless technology.

Wireless Technology in Todays Era

Wireless technology today has become a part of everybodys life. If you ask anyone what they know about wireless technology, they will answer you exemplifying the use of a smartphone, tablet, laptop, modem, etc. However, today, wireless technology is used under two broad categories. They are:

• Wi-Fi Technology Wi-Fi technology connects two devices through radio frequencies (RF) or radio waves. It is commonly used to attach internet router with devices like laptops, tablets, computers, mobile phones to communicate with each other. In fact, Wi-Fi technology is a wireless local area network (WLAN) that runs 802.11 protocols which are developed by the Institute of Electrical and Electronics Engineers (IEEE). The specification that the 802.11 families use is the Ethernet protocol and the protocol shares its path by following Carrier Sense Multiple Access (CSMA) with Collision Avoidance (CA) mechanism.

Wi-Fi can use both 2.4GHz UHF (Ultra High Frequency) and 5GHz SHF (Super High Frequency). You will be wondering to know that wherever you go, for example, your club, coffee shop, the marketplace, or even you stay at home, you are surrounded and succumbed to the radio waves. Whatever gadget you are using, that may be a cell phone, a Bluetooth earpiece, a baby monitor, a car door opener, a garage opener all are run by the radio frequency and the magnitude of frequency is 2.4GHz. so, you are living your life within 2.4GHz RF.

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