Amazon Web Services SOA-C01 Practice Exam Dumps 2025

A SysOps Administrator created an AWS CloudFormation template for the first time. The stack failed with a status of ROLLBACK_COMPLETE. The Administrator identified and resolved the template issue causing the failure.

How should the Administrator continue with the stack deployment?

Options:

Delete the failed stack and create a new stack.

Execute a change set on the failed stack.

Perform an update-stack action on the failed stack.

Run a validate-template command.

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Question 2

A company has received a notification in its AWS Personal Health Dashboard that one of its Amazon EBS-backed Amazon EC2 instances is on hardware that is scheduled maintenance The instance runs a critical production workload that must be available during normal business hours

Which steps will ensure that the instance maintenance does not produce an outage?

Options:

Configure an Amazon Lambda function to automatically start the instance if it is stopped

Create an Amazon Machine Image (AMI) of the instance and use the AMI to launch a new instance once the existing instance is retired

Enable termination protection on the EC2 instance

Stop and start the EC2 instance during a maintenance window outside of normal business hours

Question 3

An application running on Amazon EC2 allows users to launch batch jobs for data analysis. The jobs are run asynchronously, and the user is notified when they are complete. While multiple jobs can run concurrently, a user’s request need not be fulfilled for up to 24 hours. To run a job, the application launches an additional EC2 instance that performs all the analytics calculations. A job takes between 75 and 110 minutes to complete and cannot be interrupted.

What is the MOST cost-effective way to run this workload?

Options:

Run the application on On-Demand EC2 instances. Run the jobs on Spot Instances with a specified duration.

Run the application on Reserved Instance EC2 instances. Run the jobs on AWS Lambda.

Run the application on On-Demand EC2 instances. Run the jobs on On-Demand EC2 instances.

Run the application on Reserved instance EC2 instances. Run the jobs on Spot Instances with a specified duration.

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