Networking lesson 1

How many devices are connected to the internet? (In the world)
We will come back to this at the end.
1 / 23
volgende
Slide 1: Open vraag
ComputingLower Secondary (Key Stage 3)

In deze les zitten 23 slides, met interactieve quizzen en tekstslides.

time-iconLesduur is: 50 min

Onderdelen in deze les

How many devices are connected to the internet? (In the world)
We will come back to this at the end.

Slide 1 - Open vraag

Deze slide heeft geen instructies

Computer networks and protocols
Year 8 – Networks: From Semaphores to the Internet

Slide 2 - Tekstslide

Deze slide heeft geen instructies

Lesson 1: Computer networks 
Conquer: Define what a computer network is and explain how data is transmitted between computers across networks.

Aspire: Define ‘protocol’ and provide examples of non-networking protocols


Slide 3 - Tekstslide

Deze slide heeft geen instructies

Historic communication methods

These are all forms of communication. Can you match the communication method with the image and the year in which they were first used?

1876
1167
1791
1837
1961

Slide 4 - Sleepvraag

  1. Carrier pigeon: Carrier or homing pigeons are birds that have been trained to find their way back home over great distances. Carrier pigeons were used historically to send short messages on a small piece of paper attached to the leg of the bird. They were used in battle by armies to communicate. Some pigeons can fly at over 60 mph. 
Methods of communication 
These are all forms of communication that involve passing a message on between multiple people or devices until the message is received by the recipient. 

We have moved from carrier pigions that could take days to send a message to emails which appear almost instantly when sent. 
 

Slide 5 - Tekstslide

Deze slide heeft geen instructies

What is a computer network?
To accomplish this we use computer networks.

  • A computer network is when two or more computers are connected together to allow them to communicate.

Slide 6 - Tekstslide

Deze slide heeft geen instructies

What common daily activities do you think use computer networks?

Slide 7 - Open vraag

Deze slide heeft geen instructies

Using networks 
  • Morning: music playing via a Bluetooth speaker, asking Alexa for the weather forecast.
  • Daytime: Logging on to a PC for a Computing lesson, printing to the library printer, 
  • Evening: Using social media, playing games online

Slide 8 - Tekstslide

Deze slide heeft geen instructies

Creating a network
To create networks we use protocols (A set of rules) that we have to follow.

We use protocols every single day of our lives. 

Slide 9 - Tekstslide

Deze slide heeft geen instructies

What protocol (rules) exists for meeting someone new in the UK?

Slide 10 - Open vraag

Deze slide heeft geen instructies

Protocols
UK:
  1. Smile, and say ‘Hello’
  2. Shake right hands (shaking left hands is considered disrespectful in many countries)

Which countries use the following protocols?

Slide 11 - Tekstslide

Deze slide heeft geen instructies

In which cultures do people use the below protocol to greet each other?
Bowing
A
Japan
B
Sweden
C
Tibet
D
Italy

Slide 12 - Quizvraag

Deze slide heeft geen instructies

In which cultures do people use the below protocol to greet each other?
Rubbing noses
A
China
B
Tibet
C
Austrailia
D
Inuit

Slide 13 - Quizvraag

Deze slide heeft geen instructies

In which cultures do people use the below protocol to greet each other?
Sticking your tongue out
A
China
B
Tibet
C
Inuit
D
Italy

Slide 14 - Quizvraag

Deze slide heeft geen instructies

Protocols 
Every country uses a slightly different set of protocols when meeting each other. 

We must do the same with computer networks and how they communicate. 

Slide 15 - Tekstslide

Deze slide heeft geen instructies

Computer protocols: emails protocols
One method of communicating on a network is via email, We have to follow a set of key protocols when using an email. 

  • Here is an example of an email
  • apeake@nusa.org.uk
  • And another 
  • YourQuestions@bbc.co.uk.

Slide 16 - Tekstslide

Deze slide heeft geen instructies

What rules (protocols) exist
for an email address?

Slide 17 - Woordweb

Deze slide heeft geen instructies

Computer protocols: email protocols
apeake@nusa.org.uk

  • A first part is to identify the person or service, so the user;
  • An ‘@’ symbol must be used.
  • The email address must be unique.

Slide 18 - Tekstslide

Deze slide heeft geen instructies

What parts of this web address
show rules (protocols) being used?
http://www.bbc.co.uk

Slide 19 - Woordweb

Deze slide heeft geen instructies

Computer protocols: email and web address protocols
http://www.bbc.co.uk

  • All website addresses start with ‘http://’ followed by ‘www’.

  • All website addresses are unique.

  • They use dots to separate each part of the address.


Slide 20 - Tekstslide

Deze slide heeft geen instructies

EOL Quiz
What is a computer network?
A
2 or more computers joined.
B
A method of communication.
C
A messaging system.
D
1 sole computer.

Slide 21 - Quizvraag

Deze slide heeft geen instructies

Which of the following is not a protocol for a web address
A
Must start with ‘http://’ followed by ‘www’.
B
You must include dots to seperate.
C
The address mus t be unique.
D
An ‘@’ symbol must be used.

Slide 22 - Quizvraag

Deze slide heeft geen instructies

Answer: Over 27 billion
There are currently just under 8 billion people on the planet. In 2019, the number of connected devices on the internet reached 22 billion! A projected 75 billion will be online by 2025 (statista.com).

Slide 23 - Tekstslide

Deze slide heeft geen instructies