Indicates interactive lessons
Duration: 00:21:11

The Internet


4:55
Protocols

To understand how the internet works we must first understand protocols. Simply put a protocol allows the exchange of information between electronic items such as laptops, desktops, mobile phones, etc. In computing terms, a protocol or communication protocol is a set of rules in which computers communicate with each other. The protocol says what part of the conversation comes... Read more

1:23
Internet

There are additional protocols which we will discuss shortly, but let’s first define what the Internet is. In its simplest form the internet is made up of a bunch of computers all connected together sharing information. The internet connects the world electronically allowing for us to send email, share files, use facebook, make calls through Skype and other interactions. In... Read more

3:18
World Wide Web

We have all seen or heard “ W W W . ” used in website addresses, this stands for the World Wide Web and was invented in the early 1990s as a subset of the internet. This could be thought of as a user interface to the internet, as it gives an address to files or way to locate online resources which are identified by Uniform Resource Locators or URLs. These URLs can be navigat... Read more

4:36
IP Address

Let’s discuss how to find a computer or server, this is done through Internet Protocol (IP) Addresses. We know that physical locations such as an office or a home has a street address. These were assigned so that we could find our way easily. The same way we have neighborhoods and addresses is true with online locations. Locations on the internet have numeric addresses calle... Read more

4:10
Domain Name

A domain name gives us a that easy way to reference a website’s location. So in the example “Company.com”, the “.com” part of the example we used is the domain extension. There are many different domain extensions, the common top level extensions are “.com” for commercial, “.org” for Organization, “.net” for Network, “.Gov” for Government, “.Edu” for Education and so on. Add... Read more

2:49
Domain Name System

Let’s get back to the idea that a domain name is equal to an IP address (in it’s simplest form). How does a domain name know what IP address to route to when you enter a domain name? The answer is DNS or Domain Name System. Think of DNS like a telephone operator's switchboard or more technically a database of domains and their corresponding IP addresses. So when you type in... Read more