The internet and the world wide web

What the syllabus asks of you

• Understand the difference between the internet • The internet is the infrastructure and the world wide web • The world wide web is the collection of websites and web pages accessed using the internet
• Understand what is meant by a uniform • A URL is a text-based address for a web page; resource locator (URL) it can contain the protocol, the domain name and the web page/file name
• Describe the purpose and operation of hypertext transfer protocol (HTTP) and hypertext transfer protocol secure (HTTPS)
• Explain the purpose and functions of a web • The main purpose of a web browser is to browser render hypertext markup language (HTML) and display web pages • Functions include: – storing bookmarks and favourites – recording user history – allowing use of multiple tabs – storing cookies – providing navigation tools – providing an address bar Candidates should be able to: Notes and guidance
• Describe how web pages are located, retrieved • Including the role of: and displayed on a device when a user enters a – the web browser URL – IP addresses – the domain name server (DNS) – the web server – HTML
• Explain what is meant by cookies and how • Cookies are used for functions, including: they are used, including session cookies and – saving personal details persistent cookies – tracking user preferences – holding items in an online shopping cart – storing login details