Practice Test 3 | AWS Certified Solutions Architect Associate | SAA-C03 | Dumps | Mock Test

Answer – B

Since the above scenario is similar to a batch processing job, the best instance type to use is a Spot Instance. Spot Instances are normally used in batch processing jobs. Since these jobs don’t last for an entire year, they can be bid upon and allocated and deallocated as requested.

Reserved Instances/Dedicated Instances cannot be used since this is not a 100% used application.

There is no mention on a continuous demand of work in the above scenario, hence there is no need to use On-Demand Instances.

For more information on Spot Instances, please visit the following URL:

https://aws.amazon.com/ec2/spot/

NOTE:

1) If you read the question once again, it has this point “These instances will only be needed until the backlog is reduced.” and also “If this process is interrupted, the video gets transcoded by another instance based on the queuing system.”

So, if your application or system is fault tolerant, Spot Instances can be used.

2) In the question, they mentioned that ” reduce this backlog by adding more instances.” That means the application does not fully depend on the spot instances. These are only using for reducing the backlog load.

3) here we have to select the most cost-effective solution. Base on the first point we conclude that the system is fault tolerant(Interruptions acceptable).

So, Spot Instances are the best option for this scenario.