Networking lesson 4

Networking lesson 4
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Slide 1: Diapositive
ComputingUpper Secondary (Key Stage 4)Lower Secondary (Key Stage 3)

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Networking lesson 4

Slide 1 - Diapositive

Do now: What is the internet?
What can it be used for (give two examples)?

Slide 2 - Question ouverte

Lesson 4: The internet
Conquer: Define what the internet is.


Aspire: Explain how data travels between computers across the internet



Slide 3 - Diapositive

The internet explained
Watch the video:

Whilst watching, keep thinking about the starter questions.

What is the internet?
What do we use it for?



Slide 4 - Diapositive

The internet explained 
  • The internet is a worldwide network of computers.

  • It is the physical hardware, i.e. the cables, the routers, and other pieces of hardware used to connect devices together.

  • Any device connected to the internet is part of this network, for example:
  • Laptops
  • Games consoles
  • PCs
  • Tablets
  • Mobile phones


Slide 5 - Diapositive

Who owns the internet
A
The government
B
No one
C
Vinton Gray
D
Google

Slide 6 - Quiz

Which of the following is NOT an internet activity?

A
Playing online games
B
Checking Instagram
C
Sending an email to a friend
D
Creating a local Microsoft PowerPoint presentation

Slide 7 - Quiz

What is the internet?

A
A set of rules to allow communication
B
A worldwide network of computers
C
A gateway on a network
D
A single network

Slide 8 - Quiz

Data transmission across continents
We now know that the internet is a global network of networks.







Slide 9 - Diapositive

How could we connect
networks together to
different countries?

Slide 10 - Carte mentale

We use undersea cables.
Name 2 countries that are connected by ‘Amitie’. How long is the cable?

Slide 11 - Question ouverte

Interesting facts
  • The first oceanic cable was laid in 1851 to connect telephones.
  • 99% of internet data is transmitted through cables under the oceans
  • Oceanic cables can be damaged by anchors, trawling fishing nets, and even shark bites!



Slide 12 - Diapositive

IP Address 
To send data via these cables we need somwhere to send it. 

An IP address is made up of 4 groups of numbers between 0 and 255, each separated by a full stop.

These are unique for every device on the internet.


Slide 13 - Diapositive

IP Address 
An IP address is just like your house address, except instead of receiving letters you receive data to your device. 

Example:
  • 192.168.5.43
  • 255.54.2.27

Slide 14 - Diapositive

You can find your own IP using google.
Search "What is my IP" into google
Enter it below.

Slide 15 - Question ouverte

Which of the following best describes the structure of an IP address?

A
4 numbers between 0 and 100, separated by dots
B
4 numbers between 0 and 255, separated by dots
C
3 numbers between 0 and 255, separated by dots
D
4 numbers between 0 and 255, separated by dashes

Slide 16 - Quiz

When was the first undersea cable placed?
A
1999
B
1951
C
1899
D
1851

Slide 17 - Quiz

Extension
1. Open PowerPoint
2. Rename your PowerPoint to 'The Internet'
3. Make a PowerPoint about the history of the internet and the key people involved in developing it.

Slide 18 - Diapositive