Computer Science

a network that connects devices wirelessly using radio waves within a limited area

network protocols that allow devices to communicate over a local network using radio waves

a standard for wireless technology that is used for exchanging data over short distances

Wireless networks

Network basics

Types of network

Network hardware and MAC addresses

Network topologies

Wired 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 connects devices with cables

a network that uses radio waves to connect devices over a local area

a network that uses satellites for communication

a network that only connects mobile phones

What is a wireless local area network (WLAN)?

a protocol for connecting devices wirelessly using radio waves

What is the name of the standard wireless technology used for exchanging data over short distances between devices?

Wireless networks are always faster than wired networks.

Wired networks are always less secure than wireless networks.

Wireless networks are always better because they don’t use cables.

Wired networks are often faster and more reliable for some tasks.

Which statement about wireless and wired networks is correct?

Put these steps in order for connecting a device to a wireless network:

a network where devices are connected using physical cables

What is the name of the common technology used for connecting devices in a wired local area network using copper cables?

What type of network cable sends data as pulses of light for high-speed connections over long distances?

Match each cable type to its main disadvantage:

light pulses travel through the fibre optic cable

the receiving device detects the light pulses

data is converted back into electrical signals

Arrange these actions for sending data over a fibre optic cable:

Which cable is most commonly used in home and office wired networks?

Wireless networks

Lesson outcome