Amazon SOA-C03 Exam Questions
AWS Certified CloudOps Engineer - Associate- 219 Questions & Answers
- Update Date : June 11, 2026
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AWS Certified Developer - Associate
608 Questions
Amazon SOA-C03 Sample Questions
Question # 1A company has a microservice that runs on Amazon EC2 instances behind an Application Load Balancer (ALB). A CloudOps engineer must use Amazon Route 53 to create a record that maps the ALB URL to example.com. Which type of Route 53 record will meet this requirement?
A. An A record
B. An AAAA record
C. An alias record
D. A CNAME record
Question # 2
A company’s ecommerce application is running on Amazon EC2 instances that are behind an Application Load Balancer (ALB). The instances are in an Auto Scaling group. Customers report that the website is occasionally down. When the website is down, it returns an HTTP 500 (server error) status code to customer browsers. The Auto Scaling group’s health check is configured for EC2 status checks, and the instances appear healthy. Which solution will resolve the problem?
A. Replace the ALB with a Network Load Balancer.
B. Add Elastic Load Balancing (ELB) health checks to the Auto Scaling group.
C. Update the target group configuration on the ALB. Enable session affinity (sticky sessions).
D. Install the Amazon CloudWatch agent on all instances. Configure the agent to reboot the instances.
Question # 3
A company has two AWS accounts connected by a transit gateway. Each account has one VPC in the same AWS Region. The company wants to simplify inbound and outbound rules in security groups by referencing security group IDs instead of IP CIDR blocks. Which solution will meet this requirement?
A. Create VPC peering connections and remove the transit gateway.
B. Enable security group referencing support on the transit gateway.
C. Enable security group referencing support on each transit gateway attachment.
D. Deploy private NAT gateways in each VPC.
Question # 4
A company plans to migrate several of its high-performance computing (HPC) virtual machines to Amazon EC2. The deployment must minimize network latency and maximize network throughput between the instances. Which placement group strategy should the CloudOps engineer choose?
A. Deploy the instances in a cluster placement group in one Availability Zone.
B. Deploy the instances in a partition placement group in two Availability Zones.
C. Deploy the instances in a partition placement group in one Availability Zone.
D. Deploy the instances in a spread placement group in two Availability Zones.
Question # 5
A company uses multiple Amazon RDS databases to support an application. The application receives all its traffic during weekdays and is idle during weekends. The company wants a solution to automatically manage the RDS DB instances during idle periods to optimize costs. Which solution will meet these requirements?
A. Use a cron job to automatically scale down the RDS DB instance type during weekends.
B. Configure Instance Scheduler on AWS to stop the RDS DB instances at the beginning of each weekend and to start the instances at the end of each weekend.
C. Purchase Reserved Instances for the RDS DB instances.
D. Use the auto scaling feature of Amazon RDS to automatically adjust the DB instance type based on CPU utilization.
Question # 6
A CloudOps engineer is preparing to deploy an application to Amazon EC2 instances that are in an Auto Scaling group. The application requires dependencies to be installed. Application updates are issued weekly. The CloudOps engineer needs to implement a solution to incorporate the application updates on a regular basis. The solution also must conduct a vulnerability scan during Amazon Machine Image (AMI) creation. What is the MOST operationally efficient solution that meets these requirements?
A. Create a script that uses Packer and schedule a cron job.
B. Install the application and dependencies on an EC2 instance and create an AMI.
C. Use EC2 Image Builder with a custom recipe to install the application and
dependencies.
D. Invoke the EC2 CreateImage API operation by using an EventBridge scheduled rule.
Question # 7
A company needs to monitor its website's availability to end users. The company needs a solution to provide an Amazon Simple Notification Service (Amazon SNS) notification if the website's uptime decreases to less than 99%. The monitoring must provide an accurate view of the user experience on the website. Which solution will meet these requirements?
A. Create an Amazon CloudWatch alarm that is based on the website’s logs that are published to a CloudWatch Logs log group. Configure the alarm to publish an SNS notification if the number of HTTP 4xx and 5xx errors exceeds a specified threshold.
B. Create an Amazon CloudWatch alarm that is based on the website's published metrics in CloudWatch. Configure the alarm to publish an SNS notification based on anomaly detection.
C. Create an Amazon CloudWatch Synthetics heartbeat monitoring canary. Associate the canary with the website’s URL. Create a CloudWatch alarm for the canary. Configure the alarm to publish an SNS notification if the value of the SuccessPercent metric is less than 99%.
D. Create an Amazon CloudWatch Synthetics broken link checker monitoring canary. Associate the canary with the website’s URL. Create a CloudWatch alarm for the canary. Configure the alarm to publish an SNS notification if the value of the SuccessPercent metric is less than 99%.
Question # 8
A company is storing backups in an Amazon S3 bucket. The backups must not be deleted for at least 3 months after the backups are created. What should a CloudOps engineer do to meet this requirement?
A. Configure an IAM policy that denies the s3:DeleteObject action for all users. Remove the policy after three months.
B. Enable S3 Object Lock on a new S3 bucket in compliance mode. Place all backups in the new S3 bucket with a retention period of 3 months.
C. Enable S3 Versioning on the existing S3 bucket. Configure S3 Lifecycle rules to protect the backups.
D. Enable S3 Object Lock on a new S3 bucket in governance mode. Place all backups in the new S3 bucket with a retention period of 3 months.
Question # 9
A CloudOps engineer created a VPC with a private subnet, a security group allowing all outbound traffic, and an endpoint for EC2 Instance Connect in the private subnet. The EC2 instance was launched without an SSH key pair, using the same subnet and security group. However, the engineer cannot connect via EC2 Instance Connect endpoint. How can the CloudOps engineer connect to the instance?
A. Create an inbound rule in the security group to allow HTTPS traffic on port 443 from the private subnet.
B. Create an inbound rule in the security group to allow SSH traffic on port 22 from the private subnet.
C. Create an IAM instance profile that allows AWS Systems Manager Session Manager to access the EC2 instance. Associate the instance profile with the instance.
D. Recreate the EC2 instance. Associate an SSH key pair with the instance.
Question # 10
A company’s application servers in AWS account 111122223333 use a security group sg-1234abcd. They need to access a database hosted in account 444455556666. The VPCs are connected using a VPC peering connection (pcx-b04deed9). A CloudOps engineer must configure the database’s security group to allow new connections only from the application servers. What should the engineer do?
A. Add an inbound rule to the database's security group. Reference 111122223333/sg1234abcd as the source.
B. Add an inbound rule to the database's security group. Reference pcx-b04deed9/sg1234abcd as the source.
C. Add an inbound rule to the database's security group. Reference sg-1234abcd as
the source.
D. Add an inbound rule to the database's security group. Reference 444455556666/sg1234abcd as the source.
Question # 11
A company hosts a web application on an Amazon EC2 instance. The web server logs are published to Amazon CloudWatch Logs. The log events have the same structure and include the HTTP response codes associated with user requests. The company needs to monitor the number of times the web server returns an HTTP 404 response. What is the MOST operationally efficient solution that meets these requirements?
A. Create a CloudWatch Logs metric filter that counts the number of times the web server returns an HTTP 404 response.
B. Create a CloudWatch Logs subscription filter that counts the number of HTTP 404 responses.
C. Create an AWS Lambda function that runs a CloudWatch Logs Insights query every hour.
D. Create a script that runs a CloudWatch Logs Insights query every hour.
Question # 12
A media company hosts a public news and video portal on AWS. The portal uses an Amazon DynamoDB table with provisioned capacity to maintain an index of video files that are stored in an Amazon S3 bucket. During a recent event, millions of visitors came to the portal for news. This increase in traffic caused read requests to be throttled in the DynamoDB table. Videos could not be displayed in the portal. The company's operations team manually increased the provisioned capacity on a temporary basis to meet the demand. The company wants the operations team to receive an alert before the table is throttled in the future. The company has created an Amazon Simple Notification Service (Amazon SNS) topic and has subscribed the operations team's email address to the SNS topic. What should the company do next to meet these requirements?
A. Create an Amazon CloudWatch alarm that uses the ConsumedReadCapacityUnits
metric. Set the alarm threshold to a value that is close to the DynamoDB table's
provisioned capacity. Configure the alarm to publish notifications to the SNS topic.
B. Turn on auto scaling on the DynamoDB table. Configure an Amazon EventBridge rule to publish notifications to the SNS topic during scaling events.
C. Turn on Amazon CloudWatch Logs for the DynamoDB table. Create an Amazon CloudWatch metric filter to pattern match the THROTTLING_EXCEPTION status code from DynamoDB. Create a CloudWatch alarm for the metric. Select the SNS topic for notifications.
D. Configure the application to store logs in Amazon CloudWatch Logs. Create an Amazon CloudWatch metric filter to pattern match the THROTTLING_EXCEPTION status code from DynamoDB. Create a CloudWatch alarm for the metric. Select the SNS topic for notifications.
Question # 13
A CloudOps engineer needs to set up alerting and remediation for a web application. The application consists of Amazon EC2 instances that have AWS Systems Manager Agent (SSM Agent) installed. Each EC2 instance runs a custom web server. The EC2 instances run behind a load balancer and write logs locally. The CloudOps engineer must implement a solution that restarts the web server software automatically if specific web errors are detected in the logs. Which combination of steps will meet these requirements? (Select THREE.)
A. Install the Amazon CloudWatch agent on the EC2 instances.
B. Create an AWS CloudTrail metric filter for the web logs. Configure an alarm for the specific errors.
C. Create an Amazon CloudWatch metric filter for the web logs. Configure an alarm for the specific errors.
D. Publish alarm findings to Amazon Simple Email Service (Amazon SES). Invoke an AWS Lambda function to restart the web server software.
E. Create an Amazon EventBridge rule that responds to the alarm. Configure the rule to invoke an AWS Systems Manager Automation runbook to restart the web server software.
F. Create an Amazon Simple Notification Service (Amazon SNS) notification that responds to the alarm. Configure the notification to invoke an AWS Systems Manager Automation runbook to restart the web server software.