Internet

It is an example of WAN (Wide Area Network) and is a worldwide network of networks. Internet works on TCP/IP (Transmission Control Protocol / Internet Protocol) which are rules, about how data should be transmit over a network. Internet provides various services like E-mail, WWW, etc. Internet can be accessed by an ISP (Internet Service Provider) as MTNL, Airtel, etc. in India.

Web Browser
It is application software, which is used to locate, retrieve and also display content on the World Wide Web, including Web pages, images, video and other files.

Uploading and download files
The use of the terms uploading and downloading often imply that the data sent or received is to be stored permanently, or at least stored more than temporarily.

Uploading – It is sending of a file from one computer system to another on internet, usually from
client to server. Usually FTP is used for uploading files but permission to the folder or directory for uploading is also needed. Attaching a file in e-mail is also uploading.

Downloading – It is receiving of a file from a computer system on internet, usually from server to client. Usually FTP is used for downloading but permission to access the folder or directory to download is also needed. Saving an attachment in e-mail and saving an web page is also downloading and steps to download a web page or image typically includes

To download a file through a website, click on the link for the file to download, in some cases the website may automatically start the download process after waiting a few seconds.
Next, the browser will prompt on what to do with the file either run it with the program or save the file.
After the file has been downloaded, if the file is an executable file, double-click the file to start the setup of the program or the file may be zip file which needs to be extracted.
It is important to note that files on the Internet may contain viruses and they should be scanned by an up to date virus scanner.