AWS (Amazon Web Services) Certification Practice Exam

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Dive into the AWS Certification Exam with our comprehensive quiz. Challenge yourself with multiple-choice questions designed to mimic the exam format. Each question includes detailed explanations to boost your understanding and help you ace your AWS Certification!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What type of instances can be launched at any time and are typically used for short term needs?

Reserved Instances
Spot Instances
On-Demand Instances
Scheduled Instances

The correct answer is: On-Demand Instances

On-Demand Instances are designed for flexibility, allowing users to launch and terminate instances at any time according to their needs without any long-term commitment. This model is particularly beneficial for applications with unpredictable workloads or for those that require short-term computing capacity. Users pay for the compute capacity by the hour or second, depending on the instance type, and there are no upfront payments or long-term contracts involved. The appeal of On-Demand Instances lies in their capacity to adapt quickly to changing demands, making them suitable for development and testing environments, as well as building applications that may require varied resource sizes over time without overcommitting financially. In contrast, Reserved Instances provide a cost-efficient solution for long-term usage commitments, requiring payment for a reservation over a one- or three-year term, thus reducing costs but limiting instances to the agreed timeframe. Spot Instances, while offering significant cost savings, are subject to availability and can be terminated by AWS when demand increases. Scheduled Instances allow users to reserve capacity for specific time periods ahead of time, lacking the immediate flexibility associated with On-Demand Instances. Therefore, On-Demand Instances are the right choice for short-term needs due to their immediate availability and flexibility.