The internet

What is the Internet?

• The World Wide Web

• A collection of interconnected networks

• A place where a huge amount of information is stored

• A single network controlled by a central computer

Who owns the World Wide Web?

• Tim Berners-Lee

• The US security service

• A syndicate of Universities and Government organisations

• Nobody

When might you use the Internet without accessing the World Wide Web?

• When emailing a friend

• When booking a cinema ticket online

• When using Instagram

• When using Tik Tok

What is a URL (uniform Resource locator)?

• A search engine

• A web address

• A web browser

• A website

Which of the following is a true statement?

• Anyone can choose whatever website address they want

• Every website in the world has a unique address

• www.mylife.com is another way of writing the address www.mylife.net

• www.mylife.fr is a valid address for a website based in the UK

A website address such as www.fishnchips.co.uk :

• has a unique corresponding IP address such as 84.160.131.1

• is the same address as www.fishnchips.com

• is not a valid web address

• is the web address of a company based in Ukraine

Which of the following is a valid domain name?

• .bin

• .jpg

• .org

• .http

A protocol is...

• A way of transmitting data

• A set of rules

• a network configuration

• part of a a web address

Data is sent over the Internet in small chunks or “packets”. As well as the data, each packet contains:

• the number of characters in the packet

• the speed at which it is to be transmitted

• the route that the packet is to take

• the ‘from’ and ‘to’ addresses and the number of the packet

In a packet switching network:

• Each packet contains the entire message being sent

• All packets travel via the same route from sender to recipient

• Any type of data (e.g. text, sound, images, video) can be sent

• The sender decides how many packets are to be used