Computer Science

the arrangement (usually physical) of a network where devices are connected through a central point

a network where all devices are connected to a single shared communication line that transmits data to every device on the network

a network where each device is connected to one or more others, allowing multiple data paths

Network topologies

Network basics

Types of network

Network hardware and MAC addresses

Wired networks

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

All devices connects directly to a central hub or switch.

In a star topology, how are devices connected?

Each device is connected to a central point.

All devices are connected to a single cable.

What is the main feature of a bus topology?

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

What is a disadvantage of a mesh topology?

The device sends data to the hub or switch.

The hub or switch sends data to the devices.

The data arrives at the destination device.

Put these steps in order for data travelling in a star topology.

a network where devices connect through a central point

a network with a single cable for all devices

a network where each device connects to several others

What is the name of the network device that sends data to all devices connected to it, rather than just the intended recipient?

What is the name of the network device that sends data only to the specific device it is intended for, rather than to all devices on the network?

What does the acronym “MAC” stand for in MAC address?

.The data is sent to the device using its MAC address

Arrange these actions for identifying a device on a local network.

a device that manages data between networks

a device that sends data only to the correct device

a unique identifier for network interfaces

a group of connected devices that can share resources

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