Amazon Web Services SOA-C01 Practice Exam Dumps 2025

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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Question 2

A company has adopted a security policy that requires all customer data to be encrypted at rest. Currently, customer data is stored on a central Amazon EFS file system and accessed by a number of different applications from Amazon EC2 instances.

How can the SysOps Administrator ensure that all customer data stored on the EFS file system meets the new requirement?

Options:

Update the EFS file system settings to enable server-side encryption using AES-256.

Create a new encrypted EFS file system and copy the data from the unencrypted EFS file system to the new encrypted EFS file system.

Use AWS CloudHSM to encrypt the files directly before storing them in the EFS file system.

Modify the EFS file system mount options to enable Transport Layer Security (TLS) on each of the EC2 instances.

Question 3

A company's application infrastructure was deployed using AWS CloudFormation and is composed of Amazon EC2 instances behind an Application Load Balancer. The instances run an EC2 Auto Scaling group across multiple Availability Zones. When releasing a new version of the application, the update deployment must avoid DNS changes and allow rollback.

Which solution should a sysops administrator use to meet the deployment requirements for this new release?

Options:

Configure the Auto Scaling group to use lifecycle hooks. Deploy now instances with the new application version. Complete the lifecycle hook action once healthy.

Create a new Amazon Machine Image (AMI) containing the updated code. Create a launch configuration with the AMI. Update Auto Scaling group to use the new lauch configuration.

Deploy a second CloudFormation stack. Wait for the application to be available Cut over to the new Application Load Balancer

Modify the CloudFormation template to use an AutoScalingReplacingUpdate policy. Update the stack. Perform a second update with the new release

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