Disk Defrag is a program built into the operating system. Think of the all files on the computer as all the books in a huge library, the more you use files, the messier the library gets as the files don't get put back in the right place. Eventually the computer will take longer to load programs and files because it needs extra time to sort through and find what it's looking for.
A disk defrag is like hiring a temporarily librarian to sort and organize all the files and programs into a sequential order and categorising it so the computer can find what its looking for more efficiency . The image below is a 'before' and 'after' example of a disk defrag
Red is all the “messy’ sections. Blue is all the 'Organised' sections. After the Disk defrag was run, we can visually see the improvement on the file structure, and so can your computer!
A Web Browser is a type of program, just as Microsoft Office, iTunes and Spotify are programs
A browser lets you visit websites and interact with them, in fact, you are currently reading this from within a web browser!
There are a few different web browsers available, some of the most common ones are below:-
The internet is a global system made up of billions of devices from all around the world, all connected to each other by a series of telephone lines, cables and satellite connections.
The World Wide Web (www) is the information and the services we use thanks to this massive network
Because 'The Internet' is a collection of computers, it does not exist in one specific place, or even owned by any specific corporation..
If you have your own webpage, you are a little part of the internet. Just like the previous FAQ on networking, the Internet is just a HUGE network of computers.
A Computer Network is a collection of computers and devices connected to each other. They can be connected by Ethernet cable, Wireless and many others, such as Fibre.
Your home network is a LAN (Local Area Connection) and may look like the image below:
Networks can also be parts of bigger networks. For example, Your home network is part of your Internet Service Providers Network (Telstra, Optus, TPG etc) and from there, they are connected to even bigger infrastructure which make up the internet. See "What is the Internet, really?" for more information
A search engine is program that searches a database for what you are looking for and displays the best results. The most popular search engine is ‘Google’ which you probably use on a daily basis. When you enter a search term as below
Google searches it’s own database for the most relevant results and displays them for your viewing based off the ranking.
This process is very complicated. You can improve the ranking of your website following a method called SEO.
A program is a set of instructions that tells the computer what to do.
Those instructions can be anything from Photo editing in Photoshop, scanning for viruses with Norton or playing music in iTunes.
An operating system is the core software of the computer. Think of it as the green lego base. Without the base, you have no where to put the blocks (Programs).
The main operating systems are Windows XP, Windows 7 and Windows 8, as well as OSX (Mac). All computers run a form of operating system as the visual interface makes it much easier to use. The OS is essentially the link between the user and the computer.