Starter quiz
- What is the internet?
- a single computer
- a network of networks connecting computers worldwide ✓
- a website
- a type of cable used to connect devices
-
- Which of the following are services provided by the internet?
- World Wide Web (WWW) ✓
- email ✓
- online games ✓
- landline phone calls
-
- What is the World Wide Web (WWW)?
- a collection of web pages accessed through a web browser ✓
- a type of computer hardware
- a social media platform
- a video streaming service
-
- Which of the following can be done when using email?
- attach a file ✓
- send to multiple people at the same time ✓
- search for email addresses on web pages
- store files in cloud storage
-
- What is the purpose of cloud storage services?
- to send and receive electronic messages
- to make voice and video calls over the internet
- to store files on remote servers and access them from anywhere with an internet ✓
- to play video games with friends online
-
- Which of the following is an example of how VoIP can be used?
- sending a text message to a friend
- watching a movie online
- playing an online multiplayer game
- making a video call using an app ✓
-
Exit quiz
- Why is it important to use websites with "HTTPS" when you're giving them personal information like your address or password?
- it stops hackers from stealing your information while it's being sent ✓
- it makes the website load faster
- it makes sure the website looks nice and professional
- it prevents your computer from getting a virus
-
- What is a data packet?
- a set of rules for how devices communicate
- a complete web page, ready to be displayed in your browser
- a small chunk of data that is part of a larger message ✓
- an error message sent when something goes wrong on the internet
-
- HTTP is a protocol that allows web browsers to request a web page from what piece of network hardware?
- web server ✓
- router
- client
- email server
-
- Your web browser communicates with a web server using the `http://` protocol. What is the main purpose of this protocol?
- to display images and videos on the web page
- to provide a set of agreed rules for communication ✓
- to encrypt the data being transmitted
- to prevent hackers from accessing the network
-
- When data packets are sent across the internet, what happens to them?
- they always travel along the same path to their destination
- they are combined into one large packet before being sent
- they travel along different routes and may arrive out of order ✓
- they are stored permanently on the web server
-
- Which of the following are included in a header of a data packet?
- source address ✓
- total number of packets ✓
- data being transmitted
- packet sequence number ✓
-
Worksheet
Presentation
Video
Lesson Details
Key learning points
- The World Wide Web (WWW) relies on web browsers, web servers and web pages to deliver information and services.
- Explain how the internet uses packets to efficiently and reliably transmit data across networks.
- The HTTP protocol is used govern how data is exchanged between web browsers and servers.
- The HTTPS protocol provides secure communication between web browsers and servers.
Common misconception
Data packets from a complete message always follow the same route to their destination. They are then put back together in the order they are received.
Data packets are split and will be sent using the most efficient route at the time which often changes. Packets include data parts so they can be reassembled at the destination as long as the order of the packets is identified before being sent.
Keywords
Web server - a networked computer that stores and provides web pages and other data on request
Http - the Hypertext Transfer Protocol is a set of rules that allows data such as web pages to be sent and received across the WWW
Https - the Hypertext Transfer Protocol Secure is a set of rules that allows data to be encrypted and exchanged securely via the WWW
Packet - a segment of data, usually part of a larger message