Networks 3

​Do Now:

​ 1. Log in

2. Go to class notebook

3. Complete Do ​Now - Networks 3

​Do Now ANSWERS

​Advantages of a computer network:

1. We can share software, files and data.

2. We can share hardware.

3. We can communicate over long distances.

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Disadvantages of a computer network:

1.If the network breaks, it makes tasks more difficult.

2. We expose ourselves to hackers and viruses.

3. We expose ourselves to cyber bullies.

​The Big Question:

​What are different Network types?

​How are they connected?

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​Key words:

​LAN, WAN, wireless, network, topology, nodes

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​Topologynoun

​top-ol-ogy

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The arrangement and interlinking of computers in a computer network

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"the topology of a computer network"​

​LAN

Local Area Network

​A LAN (local area network) is a network of computers within the same building, such as a school, home or business. A LAN is not necessarily connected to the internet

​WAN

Wide Area Network​

​A WAN (wide area network) is created when LANs are connected. This requires media such as broadband cables, and can connect up organisations based in different geographical places. The internet is a WAN.

​Go to class notebook:

Complete Activity 1​

​How would you connect all these computers into a network? Think about how many cables you will need to use.

Draw

How would you connect all these computers into a network?

​Live demo - Ring Network

​Questions ahead...

Multiple Choice

What does LAN stand for?

• Logical Analogue Network

• Laser Assisted Network

• Local Area Network

Multiple Choice

What does WAN stand for ?

• Weak Access Node

• Working Area Network

• Wide Area Network

• World Access Net

Multiple Choice

Which of these statements is TRUE about a LAN?

• A LAN connects computers in a small area such as an office

• A modem is needed to connect a computer to a LAN

• A LAN consists of only one computer

Multiple Choice

 

Which of the following networks is LEAST likely to be a WAN?

• The Internet

• A school network

• A network of bank cash dispensers

Multiple Choice

Which type of network needs a 'hub' or 'switch'?

• Star

• Ring

• Bus

Multiple Choice

 

What is a data collision?

• When two devices on a network transmit data at the same time

• When one device on a network transmits data

• When two devices on a network transmit at separate times

Multiple Choice

In a star network...

• Each device is connected to a switch or hub

• Each device connects to each other

• Each device is connected in a line

• Each device is connected to a terminal

Draw

Connect these nodes into a STAR topology

Draw

Connect these nodes into a RING topology

Draw

Connect these nodes into a BUS topology

​Go to class notebook:

Complete Activity 2​