A data engineering team runs batch processing jobs on Amazon EMR. The jobs take several hours to complete but can be interrupted and resumed without data loss. The team wants to reduce the compute costs of these jobs by up to 90%. Which EC2 pricing model should they use for the EMR task nodes?

Answer options:

On-Demand Instances

Reserved Instances

Spot Instances

Dedicated Hosts

How to approach this question

Match 'interruptible' and 'up to 90% discount' to Spot Instances.

Full Answer

C.Spot Instances✓ Correct

Amazon EC2 Spot Instances let you take advantage of unused EC2 capacity in the AWS cloud. Spot Instances are available at up to a 90% discount compared to On-Demand prices and are perfect for fault-tolerant workloads like EMR task nodes.

Common mistakes

Choosing Reserved Instances for workloads that are intermittent and interruptible.

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Practice the full AWS Solutions Architect Professional SAP-C02 Practice Exam 1

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