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Introducing Networks

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Learning Objectives
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 3 I can describe what computer networks are and what they are for
 4 I can tell the difference between the internet and the world wide web
 4 I can identify advantages and disadvantages of networks

🏁 Learning Objective 13 :- I can describe what computer networks are and what they are for


What is a network?

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A network is two or more computers (or other electronic devices) that are connected together, usually by cables or Wi-Fi.

Some computer networks will have a server. A server is a powerful computer that often acts as a central hub for services in a network, eg emails, internet access and file storage. Each computer connected to a server is called a client.

A computer that is not connected to a network is called a standalone computer.


Task 1

Complete the following slide in your powerpoint

"Computer networks and their purposes"

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Task 2

Complete the following slide in your powerpoint

"Network hardware finder."

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🏁 Learning Objective 14 :- I can tell the difference between the internet and the world wide web


What is a the World Wide Web?

Networking is critical if you want to use your computer to communicate. Without it you couldn't send an email, a text or an instant message.

We use a huge network on a daily basis and this is called the internet. Around three billion people use the internet to share data, news and resources, amongst many other things.


Task 1

Complete the following slide in your powerpoint

"What is the biggest Computer network in the world"

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Task 2

Complete the following slide in your powerpoint

"The difference between the internet and the world wide web"

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🏁 Learning Objective 15 :- I can identify advantages and disadvantages of networks


Benefits of a network?

What are the benefits of a network?

Using a network allows you to share:

  • hardware, such as a printer
  • software, allowing multiple users to run the same programs on different computers
  • data, so that other people can access shared work and you can access your data from any computer on the network

What problems can occur with a network?

  • If we connect computers or devices together in a network we can expose ourselves to some problems.
  • If the network breaks, this can make a number of tasks it is used for quite difficult. For example, it might not be possible to share photographs and opinions with friends.
  • If computers and devices are networked together, we can expose ourselves to hackers and viruses. Most viruses are spread over a network and most hackers use a network to access other people's computers. Without a network connection, a hacker would have to physically get to your computer.

Task 1

Complete the following slide in your powerpoint

"Advantages of Computer networks"

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Task 2

Complete the following slide in your powerpoint

"Disadvantages of Computer networks"

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Teacher Date: 2019-11-18


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