Computer Science

a network where devices are connected using physical cables to transfer data

a common network cable made from twisted copper wires that transmits data using electrical signals

a high-speed network cable that sends data as pulses of light

Wired networks

Network basics

Types of network

Network hardware and MAC addresses

Network topologies

Wireless networks

Network addressing

Network performance

The impact of network failure

In this unit pupils will be develop their understanding of computer networks by looking at network models and the tasks performed by network hardware. They will discover the differences between wired and wireless transmission media and the factors that can affect the performance of a network.

Network fundamentals

a network that uses Wi-Fi to connect devices

a network that only connects mobile phones

a network where devices are connected using physical cables

transmitting data using electrical signals

What is a copper Ethernet cable used for?

Which cable is better for long-distance, high-speed data transfer?

choose the type of cable (copper or fibre optic)

plug cables into network switches or hubs

test the network for speed and reliability

Put these steps in order for setting up a wired network in an office:

a cable made from twisted copper wires, uses electrical signals

a cable that sends data as pulses of light

connecting devices in a home or office, or over short distances

What are copper Ethernet cables commonly used for?

all devices connect to a central hub or switch

In a star topology, how are devices connected?

every device connects to every other device

What is the main feature of a bus topology?

each device is connected to several others

Which statement describes a mesh topology?

In a bus topology, what happens if the main cable breaks?

Which topology is often used in large, reliable networks like the internet?

network fails if the central hub or switch breaks

whole network can stop working if the main cable fails

Match each network topology to its main disadvantage:

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