Year 7 Digi Tech - Terms 1 & 3

What is the internet?

• A world-wide network of billions of computers and other electronic devices

• Google

• A lot of servers sharing information

• What you use to search images

What is a node?

• Any piece of hardware within a network that can send or receive data

• A fibre optic cable

• Another name for a network

• Data

What kind of signal is sent over a wire network cable?

• electrical

• light

• radio waves

• all of the above

What kind of signal is sent over a fibre optic cable?

• electrical

• light

• radio waves

• all of the above

What kind of signal is used in wireless communications?

• electrical

• light

• radio waves

• all of the above

What type of network connection allows us to send and receive information across the oceans?

• Fibre optic cable

• Wireless

• Wire (copper) cables

• Teleportation

Signals that are sent over a network get weaker the further they travel.

How far can a signal travel along a fiber optic cable before it needs to be boosted by a repeater?

• 80km - 100km

• 1000km

• 200m

• 5km

What do we call the phenomena that allows light to travel so far down a fiber optic filament without escaping?

• Total infernal reflection

• Refraction

• Transmission

• Rebounding

What are the purposes of the modem and router in a network?

• The modem acts as an analogue to digital signal translator while the router ensures that the right internet signal is routed (directed) to the correct device.

• The router acts as an analogue to digital signal translator while the modem ensures that the right internet signal is routed (directed) to the correct device.

Which piece of hardware is a server?

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