An On-Demand Amazon Linux EC2 instance ran for 3 hours, 5 minutes, and 6 seconds. For how long will the customer be billed?
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Correct answer: 3 hours, 5 minutes, and 6 seconds.
Why this is the answer
AWS bills On-Demand EC2 instances per second, with a minimum of 60 seconds. Therefore, the customer will be billed for the exact duration the instance ran, which is 3 hours, 5 minutes, and 6 seconds. Billing per second ensures customers only pay for the compute time they consume, optimizing cost efficiency. The other options are incorrect because they round the billing duration, which is not how per-second billing works for EC2.
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