5.1-The internet and the World wide web

What is the difference between the internet and the world wide web

The internet is the term for a worldwide connection of networks and uses TCP and IP protocols while the world wide web is a collection of web pages based on hypertext transfer protocols

What is a web browser

It is software that interprets HTML from websites so that users can access them

What is a URL and what is it made up of

It is a text address used to access a site and it is in the format protocol(http or https)://website address/path/file name

What is a website address made up of

A domain host(www.), a domain name, a domain type(.com, .org etc) and sometimes a country code

What are HTTP and HTTPS

They are the protocols(set of rules) that have to be followed when you are transferring files and if there is some form of security being used then it changes to HTTPS

What are common features of a web browser (name 4)

• A home page

• A store of a users favourite websites

• A store of the history of pages visited

• The ability to navigate through websites that are already opened

• The ability to have multiple pages open at once

• Make use of cookies

• Make use of hyperlinks

• Allow data to be stored as cache

• Use JavaScript

• Use an address bar

A domain name server (DNS)

A system for finding IP addresses for the domain given in a URL by converting it. It involves more than one server.

What are cookies

Small files stored on a computer sent by a server to the browser on said computer. Each cookie is a small lookup table in pairs of (key,data). When a user visits a site the browser searches for the cookie which has information about a user’s preferences and browsing history.

What do cookies allow for

• User tracking

• Keeping user preferences

What are the cookie types

Session cookies-These are stored in temporary memory and can’t be used to identify a user

Persistent cookies- Are stored on the hard drive until they expire or are deleted so can store login details.