5.3 The Internet and The World Wide Web
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What is the internet?
It is the worldwide collection of networks that use the internet protocol suite, TCP/IP.
What is the World Wide Web?
It is the collection of web pages hosted on web servers.
What is the difference between the WWW and the Internet?
The WWW is the resources on the internet, whilst the internet is the hardware.
What are URLs?
They are addressers to specific web resources.
What is the structure of a URL?
Network Protocol → Domain Name → File Names
What is an IP address?
It is an address that uniquely identifies devices on a network. IP addresses are denary, but also uses 8 bit binary, it is: • assigned by the ip • temporary, like in ram • defines geographic locations
How does the internet work?
Data transverses throughout international servers.
How does data get to a certain device?
The international routers uses the destination IP address of the packet to identify where to send the packet. Routing algorithms will determine the best route to get there.
What is the method of data transmission?
Packet Switching
What is Packet Switching?
There is no fixed paths, but each packet can take different routes, packet heads contain packet numbers, MAC and IP addresses as well as the protocol. The trailer has a validation checks.