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Amazon SOA-C03 Exam Syllabus Topics:

Topic	Details
Topic 1	Deployment, Provisioning, and Automation: This section measures the skills of Cloud Engineers and covers provisioning and maintaining cloud resources using AWS CloudFormation, CDK, and third-party tools. It evaluates automation of deployments, remediation of resource issues, and managing infrastructure using Systems Manager and event-driven processes like Lambda or S3 notifications.
Topic 2	Security and Compliance: This section measures skills of Security Engineers and includes implementing IAM policies, roles, MFA, and access controls. It focuses on troubleshooting access issues, enforcing compliance, securing data at rest and in transit using AWS KMS and ACM, protecting secrets, and applying findings from Security Hub, GuardDuty, and Inspector.
Topic 3	Monitoring, Logging, Analysis, Remediation, and Performance Optimization: This section of the exam measures skills of CloudOps Engineers and covers implementing AWS monitoring tools such as CloudWatch, CloudTrail, and Prometheus. It evaluates configuring alarms, dashboards, and notifications, analyzing performance metrics, troubleshooting issues using EventBridge and Systems Manager, and applying strategies to optimize compute, storage, and database performance.
Topic 4	Reliability and Business Continuity: This section measures the skills of System Administrators and focuses on maintaining scalability, elasticity, and fault tolerance. It includes configuring load balancing, auto scaling, Multi-AZ deployments, implementing backup and restore strategies with AWS Backup and versioning, and ensuring disaster recovery to meet RTO and RPO goals.
Topic 5	Networking and Content Delivery: This section measures skills of Cloud Network Engineers and focuses on VPC configuration, subnets, routing, network ACLs, and gateways. It includes optimizing network cost and performance, configuring DNS with Route 53, using CloudFront and Global Accelerator for content delivery, and troubleshooting network and hybrid connectivity using logs and monitoring tools.

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Amazon AWS Certified CloudOps Engineer - Associate Sample Questions (Q122-Q127):

NEW QUESTION # 122
A company made a configuration change to an Amazon EC2 Auto Scaling group that hosts a production application. The change affected the number of available EC2 instances and caused the application to be slow to respond. The company needs a solution to provide an email notification when a management change occurs to the Auto Scaling group. The company has already set up a trail in AWS CloudTrail to log management write changes. A CloudOps engineer creates an Amazon SNS topic that has the appropriate subscribers. What should the CloudOps engineer do next to meet this requirement?

A. Use AWS Config to monitor the trail for changes to the Auto Scaling group. Configure AWS Config to publish a message to the SNS topic when a change is detected.
B. Use AWS Security Hub to monitor the trail for changes to the Auto Scaling group. Configure Security Hub to publish a message to the SNS topic when a change is detected.
C. Create an Amazon EventBridge rule to run in response to CloudTrail management write events that involve the Auto Scaling group. Configure the EventBridge rule to publish a message to the SNS topic when a change is detected.
D. Store all CloudTrail management events in an Amazon S3 bucket. Use S3 Event Notifications to publish a message to the SNS topic when a change to the Auto Scaling group is detected.

Answer: C

Explanation:
CloudTrail records management write events, and Amazon EventBridge can match those events in near real time. The correct solution is to create an EventBridge rule that filters for Auto Scaling management write events, then sends matching events to the SNS topic for email notification.
This is direct, event-driven, and operationally efficient. AWS Config is useful for resource configuration history and compliance evaluation, but it is not the simplest way to notify on specific CloudTrail write API activity. Security Hub aggregates security findings and is not intended for general Auto Scaling configuration-change alerting. S3 Event Notifications on the CloudTrail log bucket are indirect and would trigger based on log file delivery, not cleanly on the specific management event. Therefore, EventBridge plus SNS is the right CloudOps monitoring and remediation pattern.

NEW QUESTION # 123
An Amazon EC2 instance is running an application that uses Amazon Simple Queue Service (Amazon SQS) queues. A CloudOps engineer must ensure that the application can read, write, and delete messages from the SQS queues.
Which solution will meet these requirements in the MOST secure manner?

A. Create an IAM user with an IAM policy that allows the sqs:SendMessage permission, the sqs:ReceiveMessage permission, and the sqs:DeleteMessage permission to the appropriate queues. Export the IAM user's access key and secret access key as environment variables on the EC2 instance.
B. Create and associate an IAM role that allows EC2 instances to call AWS services. Attach an IAM policy to the role that allows sqs:* permissions to the appropriate queues.
C. Create and associate an IAM role that allows EC2 instances to call AWS services. Attach an IAM policy to the role that allows the sqs:SendMessage permission, the sqs:ReceiveMessage permission, and the sqs:DeleteMessage permission to the appropriate queues.
D. Create an IAM user with an IAM policy that allows the sqs:SendMessage permission, the sqs:ReceiveMessage permission, and the sqs:DeleteMessage permission to the appropriate queues. Embed the IAM user's credentials in the application's configuration.

Answer: C

Explanation:
The most secure pattern is to use an IAM role for Amazon EC2 with the minimum required permissions. AWS guidance states: "Use roles for applications that run on Amazon EC2 instances" and "grant least privilege by allowing only the actions required to perform a task." By attaching a role to the instance, short-lived credentials are automatically provided through the instance metadata service; this removes the need to create long-term access keys or embed secrets. Granting only sqs:SendMessage, sqs:ReceiveMessage, and sqs:DeleteMessage against the specific SQS queues enforces least privilege and aligns with CloudOps security controls. Options A and B rely on IAM user access keys, which contravene best practices for workloads on EC2 and increase credential-management risk. Option C uses a role but grants sqs:*, violating least-privilege principles. Therefore, Option D meets the security requirement with scoped, temporary credentials and precise permissions.
References (AWS CloudOps Documents / Study Guide):
* AWS Certified CloudOps Engineer - Associate (SOA-C03) Exam Guide - Security & Compliance
* IAM Best Practices - "Use roles instead of long-term access keys," "Grant least privilege"
* IAM Roles for Amazon EC2 - Temporary credentials for applications on EC2
* Amazon SQS - Identity and access management for Amazon SQS

NEW QUESTION # 124
A company generates hundreds of images and uploads the images to an Amazon S3 bucket. The company manually copies the images to an always-on Amazon EC2 instance for processing. It usually takes between 30 seconds and 120 seconds to process each image.
A CloudOps engineer wants to automate the image processing solution to process the images as soon as they arrive in the S3 bucket.
Which solution will meet these requirements MOST cost-effectively?

A. Configure S3 Event Notifications to invoke the EC2 instance when images are uploaded to the S3 bucket. Run the image processing solution on the EC2 instance to process the images.
B. Configure S3 Event Notifications to invoke a task on an Amazon Elastic Container Service (Amazon ECS) container that is backed by EC2 instances when the images are uploaded to the S3 bucket. Configure the ECS task to process the images.
C. Configure S3 Event Notifications to invoke an Amazon EventBridge rule. Configure the EventBridge rule to start a preconfigured AWS Glue ETL job to process images.
D. Configure S3 Event Notifications to invoke an AWS Lambda function that runs image processing logic when new images are uploaded on the source S3 bucket.

Answer: D

Explanation:
Invoking an AWS Lambda function from S3 event notifications provides fully automated, serverless, pay-per-use processing that starts immediately when each object is uploaded. This avoids the cost of an always-on EC2 fleet and is typically the most cost-effective option for short, event-driven processing workloads like 30-120 second per-image processing (within Lambda limits).

NEW QUESTION # 125
A web application runs on Amazon EC2 instances in the us-east-1 Region and the us-west-2 Region. The instances run behind an Application Load Balancer (ALB) in each Region. An Amazon Route 53 hosted zone controls DNS records.
The instances in us-east-1 are production resources. The instances in us-west-2 are for disaster recovery. EC2 Auto Scaling groups are configured based on the ALBRequestCountPerTarget metric in both Regions.
A SysOps administrator must implement a solution that provides failover from us-east-1 to us- west-2. The instances in us-west-2 must be used only for failover.
Which solution will meet these requirements?

A. In us-east-1, create an Amazon CloudWatch alarm that enters ALARM state when an EC2 instance is terminated. In us-west-2, create an AWS Lambda function that modifies the Route 53 hosted zone records to send traffic to us-west-2. Configure the CloudWatch alarm to invoke the Lambda function.
B. Implement a Route 53 health check and a latency routing policy for the hosted zone. Configure the latency routing policy to automatically redirect traffic to the resources in us-west-2.
C. In us-west-2, create an Amazon CloudWatch alarm that enters ALARM state when resources in us- east-1 cannot be resolved. In us-west-2, create an AWS Lambda function that modifies the Route 53 hosted zone records to send traffic to us-west-2. Configure the CloudWatch alarm to invoke the Lambda function.
D. Implement a Route 53 health check and a failover routing policy for the hosted zone. Configure the failover routing policy to automatically redirect traffic to the resources in us-west-2.

Answer: D

Explanation:
The requirement is classic active-passive (production in us-east-1, DR in us-west-2 "only for failover"). The most operationally efficient and purpose-built solution is Route 53 failover routing combined with health checks. With failover routing, Route 53 designates one record as PRIMARY (us- east-1) and another as SECONDARY (us-west-2). Route 53 continuously evaluates the health check associated with the primary endpoint (commonly the ALB DNS name or a specific health-check path). If the primary fails, Route 53 automatically returns the secondary record, directing client DNS resolution to the DR region. This ensures us-west-2 is used only when us- east-1 is unhealthy, directly matching the requirement.

NEW QUESTION # 126
A company uses AWS CloudFormation stacks to manage its infrastructure. The company's developers commit infrastructure changes to the company's Git repository. The company wants to automate updates to the CloudFormation stacks when developers commit changes. The company requires change set generation before deployment and notification of pending changes for approval. The solution must also minimize infrastructure maintenance overhead. Which solution will meet these requirements?

A. Create an AWS Lambda function that creates the CloudFormation change sets, runs the change sets, and waits for approval. Set up an Amazon EventBridge rule to invoke the Lambda function when developers commit code to the Git repository.
B. Use AWS Systems Manager Automation to scan the Git repository for changes. Create a change set and deploy the CloudFormation stack.
C. Create a pipeline in AWS CodePipeline with GitHub as the source provider. Configure a CloudFormation deploy action to create change sets. Use Amazon SNS to send approval notifications.
D. Use CloudFormation Git sync to automatically deploy changes when developers push commits to the repository. Configure Amazon EventBridge to trigger an Amazon SNS notification after each deployment is complete.

Answer: C

Explanation:
AWS CodePipeline is the correct managed CI/CD service for automating infrastructure deployments from a Git repository while preserving approval gates. A pipeline can use GitHub or another supported source provider, create CloudFormation change sets, and include a manual approval action before executing the change set. Notifications can be sent through Amazon SNS so approvers are informed before deployment proceeds. This meets all requirements: automated updates, change set generation, approval notification, and low infrastructure maintenance.
CloudFormation Git sync can automate stack updates from a repository, but the option describes notification only after deployment, which does not satisfy the pending approval requirement. A Lambda-based workflow would require custom orchestration and approval handling. Systems Manager Automation is not the standard Git-driven CloudFormation deployment pipeline tool.
Therefore, CodePipeline with CloudFormation change sets is best.

NEW QUESTION # 127
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