1. URLs & Web Protocols 18 URLs & Web Protocols 18

2. URLs & Web Protocols 18 A URL is a web address Uniform Resource Locator You say it like ‘earl’ A resource can be a full website But a resource could also be a single document or a single video URLs have several components You need to know them...

3. URLs & Web Protocols 18 http://www.toys.co.uk/prices/list.pdf Let’s look at the different components of this URL...

4. URLs & Web Protocols 18 Let’s look at the different components of this URL... http://www.toys.co.uk/prices/list.pdf Protocol Hypertext transfer protocol controls the request/response process

5. URLs & Web Protocols 18 Let’s look at the different components of this URL... http://www.toys.co.uk/prices/list.pdf Domain Think of a domain as the main name for a website eg adidas.com You can buy a domain name to suit you or your business

6. URLs & Web Protocols 18 Let’s look at the different components of this URL... http://www.toys.co.uk/prices/list.pdf Path This is like the address of an individual page or file on the website

7. URLs & Web Protocols 18 http://www.music.com/videos/aband.mp4 Can you name the highlighted parts of these URLs? http://www.hola.es http://www.dogscharity.org.uk

8. URLs & Web Protocols 18 Let’s explore paths on this website... http://www.lmc.ac.uk/courses/full-time-courses

9. URLs & Web Protocols 18

10. URLs & Web Protocols 18 Now, we’ll focus on the protocols or rules used on the World Wide Web There are several protocols for handling all the data for webpages. But you need to know the basics about two: HTTP and FTP

11. URLs & Web Protocols 18 http is the set of rules that work behind the scenes to handle the loading of web pages When you enter a web address in your browser, it handles that REQUEST to get a page from a web server It also handle the RESPONSE to download the web page and all its files to your client device Hypertext Transfer Protocol (http)

12. URLs & Web Protocols 18 You may have noticed more and more web addresses that use https The ‘s’ in https means secure. That means the data in the webpage is scrambled before it is transmitted across the Internet So if data is intercepted, it can’t be understood by hackers It protects your privacy https

13. URLs & Web Protocols 18 ftp is an old protocol invented even before the Web was born Some people still use it to moves files from a server to their client device For example, you could have URLs that start with ‘ftp’ we well as ‘http’ The http link will just open the page But the ftp link will download a file File Transfer Protocol (ftp) http = open web pages ftp = move files

14. URLs & Web Protocols 18 Using http and ftp… Client SideServer SideWeb CoderInternet Backbone http ftp Handles getting & loading web pages Used for moving files It is more secure It can also handle multiple downloads

15. URLs & Web Protocols 18 URLs & Web Protocols 18

16. URLs & Web Protocols 18 URLs & Web Protocols 18