A malware program that uses the resources of the computer in which it is installed to spread to other computers and cause the computers to become unreliable
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Card 7
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Systems software that performs a common maintenancece task
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Card 8
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The tools provided by the operating system to allow the computer and the user to give instructions to the computer and receive and understand the results
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Card 9
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A utility or device that monitors the traffic between a computer and the internet and only allows connections that are authorised
