Lecture notes
Class notes cambridge and edexcel (everything u need tk to pass!)
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Internet: is a global concept that connects everyone around the globe fordata exchange
- Interconnected network
- The internet is basically the infrastructure
World Wide Web: is the collection of websites and web pages accessed
using the internet
- Only possible when you are connected to the internet
INTERNET VS WWW (difference)
Internet is used for exchange of data
Video calling, chatting
Uses TCP/IP protocol
World wide web is used to access the data on various websites
Explore web pages of a website
Uses URLS to identify web pages of a website
,Components of WWW
- Web browser: software that allows you to access websites and
display webpages
- Website: collection of webpages
- Webpages: one particular instance of websites
Examples of web browser:
Chrome
Opera
Safari
firefox
The main purpose of a web browser is to render hypertext markup
language (HTML) and display web pages
Other purposes include:
- storing bookmarks and favorites
- recording user history
- allowing use of multiple tabs
- storing cookies
- providing navigation tools
- providing an address bar
, Uniform Resource Locator
● A URL is a text-based address for a web page; it can contain the
protocol, the domain name and the web page/file name
www.mywebsite.com.pk./About/logo.png
www. is the host of website
mywebsite is the domain name
.com is the domain type
pk is the origin of
About/logo.png is the path
Protocols
Protocol: The protocol is the communication rules/protocol used to transfer
data between the client and the server
The padlock sign available highlights the HTTP protocol
2 types:
HTTP
HTTPS
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