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Reliability in computer systems questions

Q1. Explain why users need to be able to rely on computers working.
Q2. Describe the term ‘failover’.
Q3. Describe an example of using ‘failover’ on a network. 
Q4.
What does the word 'reliable' mean?
Q5. What is a server?
Q6. On a network, what is meant by a 'client'?
Q7. Hard drives will always fail one day. Why?
Q8. What is meant by a 'back-up' of data?
Q9. Companies often say that data is the most valuable part of their business, even more so than the people who work there. Explain this statement.
Q10. Lots of companies now back up their data to the 'cloud'. Use the Internet. What is the cloud and what are the advantages of storing data to the cloud rather than on a hard drive or tape?

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