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'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

Question 3

An application is running on Amazon EC2 Instances behind an Application Load Balancer (ALB). An operations team wants to be notified in near-teal time when the ALB has issues connecting to backend EC2 instances.

Which solution will meet these requirements with the LEAST amount of effort?

Options:

Configure the ALB to send logs to Amazon S3. Write an AWS Lambda function to process the log files and send an email message to the operations team when the number of requests exceeds the threshold.

Create an Amazon CloudWatch rule to monitor the HealthyHostCount metric and send Amazon Simple Notification Service (Amazon SNS) messages to the operations team when HealthyHostCount is equal to zero.

Create an Amazon CloudWatch rule lo monitor the TargetConnectionErrorCount metric and send Amazon Simple Notification Service (Amazon SNS) messages to the operations team when TargetConnectionErrorCount is greater than 1.

Create an Amazon CloudWatch rule to monitor the HTTPCode_Target_5XX_Count metric and send Amazon Simple Notification Service (Amazon SNS) messages to the operations team when HTTPCode_Target_5XX_Count is greater than zero.

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