Computer Science

the ability of a network to recover quickly from problems like failures or attacks, so services can continue with little or no disruption

having backup parts such as servers or power supplies in a network so it can keep working even if something breaks

The impact of network failure

Network basics

Types of network

Network hardware and MAC addresses

Network topologies

Wired networks

Wireless networks

Network addressing

Network performance

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

What is a possible consequence of network failure in a hospital?

Which term describes a network’s ability to recover quickly from problems?

What is the term for having backup parts or systems in a network to keep it running if something fails?

plan to restore services after a major problem

It can cause data loss and financial damage.

Which of the following best explains why network failure is more serious than just being inconvenient?

Put these actions in order for responding to a network failure:

Which factor is most likely to slow down a network when too many devices are connected?

If a file is very large, what will happen to the transmission time compared to a transmitting small file?

Which device is responsible for choosing the best route for data in a network?

Complete the formula for calculating how long it takes to transmit a file:
time = size of file (in bits) ÷ {{}} (in bits per second).


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