SOA-C02 Question 312
Select 3Your organization runs a batch processing workload that is not time-sensitive and can tolerate interruptions. The workload processes large datasets and writes the output to an Amazon S3 bucket. You have been tasked with optimizing costs for this workload. Which characteristics of the workload make it a good candidate for EC2 Spot Instances?
- A
The workload can tolerate interruptions and resume processing where it left off.
- B
The workload requires constant availability without any interruption.
- C
The workload is not time-sensitive and can be executed at any time during the day.
- D
The workload has a predictable and steady resource usage pattern.
- E
The workload processes large datasets and writes them to Amazon S3.
Show answer and explanation
Correct answers: A, C, E
Explanation
Spot Instances provide significant cost savings but can be interrupted by AWS when capacity is no longer available or the Spot price exceeds your bid. Thus, workloads that can handle interruptions, are not time-sensitive, and use durable storage solutions like Amazon S3 are excellent candidates for Spot Instances. These characteristics allow the workload to resume processing from a checkpoint or restart without significant impact.
- A. Correct.
Correct. Spot Instances are suitable for workloads that can tolerate interruptions and resume processing from a checkpoint or restart. This is one of the key characteristics of Spot Instance use cases.
- B. Incorrect.
Incorrect. Spot Instances are not ideal for workloads requiring uninterrupted availability, as they can be interrupted with little notice.
- C. Correct.
Correct. Workloads that are not time-sensitive and can run at flexible times are well-suited for Spot Instances. This allows you to take advantage of cost savings during periods of low demand.
- D. Incorrect.
Incorrect. While predictable and steady resource usage patterns are beneficial, they are not a critical factor for qualifying a workload for Spot Instances. The ability to tolerate interruptions is more important.
- E. Correct.
Correct. Workloads that write results to durable storage like Amazon S3 are resilient to interruptions because the data can be retrieved and the process restarted, making them ideal for Spot Instances.