1. URL AND DNS A SHORT INTRODUCTION Rachel White7/11/2014

2. Learning Objectives To understand the terms URL and DNS Understand how they are used Understand why they are used

3. What do they stand for? U Uniform R Resource L Locator DNS DomainName System

4. URL Made up of three parts How: what protocol? Where: Which host? What: Path to the object required http://www.microsoft.com/index/index.html How: this declares the protocol to be used Where: this declares the address on the world wide web What: the path on the server

5. DNS Created as a memorable reference to a network and host Considered easier to remember than specific IP’s DNS Servers convert a Fully Qualified Domain name (FQDN) into an IP address Soton.ac.uk is a domain name 152.78.239.2 is it’s IP Which would you find easier to remember?

6. All together now! Looking at our previous example can you now tell me the DNS of our URL? http://www.microsoft.com/index/index.html How: this declares the protocol to be used Where: this declares the address on the world wide web What: the path on the server Here is the Domain name!

7. Activity time In pairs work through the activity provided

8. In Conclusion DNS – Is an easy to remember reference to a network URL – Is the full address of the website (including the Domain Name)