Login with Facebook

What is Wi-Fi and how does it works

WiFi comes from 'Wireless Fidelity’ that is a wireless data transmission technology used for the Internet - mainly - and based on the 802.11 standards. But what is it in reality, and how does it work? In most cases, it is used in the home environment, for the connection of devices in a local network, but it is not the only practical application possible, and the details about its operation are much more complex.

Whenever possible, it is most convenient to connect by cable. It is the greatest guarantee of speed and stability; however, there are cases in which only the WiFi connection is possible. And its advantage is precisely there, in that the WiFi can arrive where the wired connection does not arrive, as it happens with mobile networks about the fiber-optic broadband infrastructure. Also, in terms of installation cost, it is also cheaper than a wired network.

How does WiFi connectivity work?

The WiFi is based on radio waves, exactly like the radio itself, mobile telephony or television. However, the frequencies used for this wireless connectivity technology are different, specifically 2.4 GHz up to the 802.11n and 5 GHz standard in 802.11 ac. Currently, although the 5 GHz provide superior performance, both frequencies are used and, in addition, in the higher performance equipment, the data transfer is combined by both bands.

The two components of WiFi

In a WiFi connection, we have a wireless adapter in a computer - or other devices - that translates the data in the form of a radio signal and, through an antenna, transmits them ’over the air’ and a router which is responsible for receiving the signal and decode it. And once this is done, by a physical connection, by cable, through Ethernet, it sends the information through the Internet to other servers.

Obviously, this whole process happens exactly the same, but vice versa, when it is the ’customer’ who has to receive information from the Internet. The wireless router receives data that translates into a radio signal and sends it to the wireless adapter. All this can happen in 2.4 or 5 GHz, as we mentioned earlier, and over 802.11 a / b / g / n / ac standards. There is backward compatibility between adapter standards and access points, and in the latest specifications, it can be transmitted simultaneously in two bands for faster data transfer speed.

What is a WiFi hotspot?

An access point is an area with wireless connectivity through this technology. The router is a WiFi hotspot, for example, as long as it has this technology, and public networks in coffee shops, airports, and other working places are too. However, a wide variety of wireless network adapters can share WiFi if they are connected to another network that allows them to access the Internet. In fact, smartphones can take advantage of wireless connectivity with mobile networks and, therefore, we can share WiFi with Android and iPhone.

Types of security in WiFi connections

The security of WiFi is variable, mainly based on the encryption that applies to communications between the router and wireless adapters. There are several options, and they can be divided between safe and unsafe by their technical characteristics:

An open WiFi, without a password, does not apply encryption in communications and has no access password. This is the most insecure option, while anyone can connect to the router and intercept their communications with the devices connected to it. Therefore, it is relatively simple to spy on any user. But QEP encryption is also insecure, which is the most basic. It is weak encryption and with demonstrated vulnerabilities that allow obtaining the encryption key in just a few minutes.

The WPA encryption, which is considered safe, although it is not one hundred percent secure. WPA2 encryption is also considered secure which is an evolution of the previous one, and not only improves security but also introduces performance-related improvements in information exchanges. These two options, as we mentioned earlier, are those that are considered safe today.

Basic Requirements:

A mobile device, such as a laptop, must have a card or a wireless adapter, to take advantage of Wi-Fi technology. The latest laptops have built-in wireless cards; however, in older models, you can use a wireless adapter to connect it to a USB port or a wireless card that connects to a PCI card slot. Printers and desktops that do not have wireless cards can also use USB wireless adapters to connect to the USB ports (universal serial bus). A desktop computer also has a PCI slot where a wireless card can be connected.

A wireless router acts as a gateway to the main access point. This wireless router connects to a wired Ethernet network that provides the Internet connection; therefore, the router must have a port to connect to a cable or DSL modem.

Configure the wireless router with the basic or default settings required. An SSID (service set identifier) ​​is the name of the network. This has a default configuration with the name of the manufacturer. You can keep that name or you can change it to whatever you want. You must also configure the router with the channel which, by default, is channel 6.

You can change this setting to avoid interference if you live in a multi-dwelling construction. Also, you may have to configure the router security option. You can use the standard connection settings or the one that is publicly available. However, this entails the possibility of receiving a cyber-attack or an intrusion through the network. Therefore, it is recommended that you use a password and username to protect your wireless network.

Interactive zones:

The mobile computing industry is becoming more popular every day. Thanks to the public Wi-Fi interactive zones that people can use. When you turn on your computer or other devices that have Wi-Fi enabled, they will show available network connections. You can choose the one that has the strongest signal and connect. Often, in a public interactive zone, you can connect directly without using a password. However, some interactive zones require the user to enter a password to connect. Usually, this happens when the service is paid.


No need to install, cables and software. You just turned it onWi-Fi, enter the password printed on the device and connect the devices at the same time!


Send Comment

Need a custom

We will write it for you.
Order now

Free Essay Examples

Free essays:

An ultimate guide about biochemical reactions
Analysis methods of Transport through biological membranes
A Comprehensive Introduction to the Mona Lisa
An ultimate guide about Biomaterials
Big data analysis in evolutionary biology
Brain-Computer Interface systems with EEG signals
Biochemistry of neurotransmitter
Bipolar disorder: Symptoms, causes, diagnosis and treatment
Cellular excitability
Characterization of biological tissues, biomaterials
Characteristics of the byzantine architecture
Commonly Confused Words: Part 2
Dynamic Systems Modeling with Machine Learning
Digital Imaging: What Is It?
Different forms of dance you should know about
Data Science: Fundamental tools for data analysis
Everything you need to know about enzymatic kinetics
Electromagnetic exposure effects on human organs
Effects of Different Environmental Factors on Artworks
Entrepreneur trends to know about
Famous Ballet Forms
Four postulates of natural selection
Famous African American literature authors
Film styles and the types of styles for shooting a film
Importance of online journalism
Importance of 3d Modelling in Architecture
Introduction to Utilitarianism
Identity theft: what to do?
Kinetic models in biology and Related fields
Know about the different forms of traditional African dances
Know about the history of science
Latest technology trends
Mass transport in a biological system
Major themes in ancient Egyptian art
Major healthcare trends
Misconceptions About the Word “Introvert”
Nonlinear Dynamics in Biology & Biomedicine
NLS (Nonlinear System) - Revolutionary system in diagnostic medicine and therapy
Neural networks: what they are and what they are for
Nuclear fusion: What it is and how it works?
Role of Homeostasis in Human Physiology
Role of a digital artist
Role of gender studies
Risk management, meaning, and importance for companies
Systems biology - An understanding the functioning of biological systems
Self-assembly for biological systems
School of American Ballet
Schizophrenia - a rare psychiatric illness | Essay
The impact of the technological innovations in medicine
The Defense mechanisms against infections
Tips for writing a great thesis statement
The Modeling of Biological Systems
Understand the importance of investigative journalism
Urban planning in the US
Understanding the sociology of Race & Ethnicity
Various theoretical perspectives of sociology
Women empowerment in modern generation
What Makes a Good Leader
What is biopolymers?
What is the cytoplasm and its function?
4 Facts about Origin of Mathematics!
5 techniques to create an animation
13 Best colleges for political science in the world
3d Model Of Building
All you need to know about the ACA Code of ethics
Architecture and Democracy: An Introduction
Architecture and Democracy: Democratic Values
Architecture and Democracy: Democratic Procedures
All You Need to Know About a Synthesis Essay
An essential guide to understanding Film Theory
Application of Artificial Intelligence in Cyber Security
Applications of electrical engineering
Augmented reality: what it is, how it works, examples
Advantages And Disadvantages Of Social Networking
All you need to know about Cryptography
Applications of astrophysical science
All you need to know about architecture engineering
Applications of geological engineering
Artificial intelligence and medicine: an increasingly close relationship
An insight into Computational Biology
ACA code of conduct
A Rose for Emily
Applications of Mathematics in daily life
Architecture mistakes to avoid
All you need to know about Toxicology
All you need to know about Holistic Medicine
All you need to know about linguistics
An introduction to Linguistics and its subfields
All you need to know about Anxiety disorder
All you need to know about Drones
A Brief Insight into Political Science
Assumptions related to feminism
All you need to know about Byzantine emperors
All you need to know about labour economics
An insight into xenobots -the first-ever robots
An ultimate guide about Biomaterials
A Comprehensive Introduction to the Mona Lisa
Analysis methods of Transport through biological membranes
An ultimate guide about biochemical reactions
How to Write a Personal Essay
Housing Needs in America
How to Write a Description Essay
How to Create an Excellent Scholarship Essay?
How to write a cause and effect essay
How to Hire the Best Essay Writing Service Provider?
How to Write a College Application Essay?
How to get the most out of your English lectures
How to write Expository Essay
How to succeed in your psychology class?
How to Write an Academic Essay in the Shortest Time?
History of Journalism
How Different Sectors are Using Artificial intelligence (AI)
How to write an informative essay
How to deliver persuasive essays?
How to Give a Convincing Presentation
How to write an essay on leadership?
Historical Art Still Around Today
Humanoid robot: what it is, how it works and price
History of Chemistry
Healthcare Advanced Computer Power: Robotics, Medical Imaging, and More
Healthcare AI: Game Changers for Medical Decision-Making and Remote Patient Monitoring
How to understand different types of English
How to Cope with Chronic Pain
How African American choreographers and dancers have influenced American dance
How mobile robot can do in logistics or in production
How To Become a Successful Entrepreneur
History of the Philosophy of Feminism
How is the climate changing?
How to Track Your Content Marketing ROI
How to Gun control In the USA?
Historical and contemporary role of labour in the modern world
How breast cancers are classified?
How the cells of our body communicate?
How the Lymphatic System Works?
How Digestive System Works
How to complete your capstone projects effectively?
How to write a research project
Healthcare technologies that help patients with better self-management
How to choose the topic of the senior capstone project