A company runs a pricing job each night on 40 servers for about two hours and needs none for the rest of the day.
It does not want to pay for idle servers, so it wants capacity added before the job starts and released when it finishes.
Which cloud characteristic does this rely on?
Choose one answer.
AA. Fault tolerance, so the job keeps running if one of its servers fails
BB. Durability, so stored job results are kept safe for many years
CC. Data sovereignty, so the job data stays in the country where the company operates
DD. Elasticity, so capacity is added for the job and released afterwards
Show the answer and explanation
Answer: D
A. Wrong: Fault tolerance keeps a workload running through component failures. The company's problem is paying for capacity it does not use, which fault tolerance does not address.
B. Wrong: Durability describes how reliably stored data is kept without loss. It concerns the job output, not the number of servers the company pays for at each point in the day.
C. Wrong: Data sovereignty concerns where data is stored and which laws apply to it. It does not change how many servers run, or whether the company pays for idle ones.
Elasticity means capacity can be added and removed automatically as demand changes, so the company runs and pays for servers only while the job needs them. Fault tolerance, durability and data sovereignty are real cloud properties, but none of them addresses paying for idle servers.
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