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Amazon SOA-C03 Exam Overview:

Certification Vendor:	AWS
Exam Name:	AWS Certified CloudOps Engineer - Associate
Exam Number:	SOA-C03
Exam Duration:	130 minutes
Certificate Validity Period:	3 years
Exam Price:	USD 150
Exam Format:	Multiple choice, Multiple response
Real Exam Qty:	65 (50 scored, 15 unscored)
Related Certifications:	AWS Certified CloudOps Engineer - Associate
Passing Score:	720 (scaled score, out of 100-1000)
Available Languages:	Korean, Simplified Chinese, Japanese, English
Sample Questions:	Amazon SOA-C03 Sample Questions
Exam Way:	Online (proctored) or at a testing center (Pearson VUE or PSI)
Pre Condition:	Recommended: 1 year of experience with AWS deployment, management, troubleshooting, networking, and security. Experience in an operations role such as system administrator is helpful.
Official Syllabus URL:	https://docs.aws.amazon.com/aws-certification/latest/sysops-administrator-associate-03/sysops-administrator-associate-03.html

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Amazon SOA-C03 Exam Syllabus Topics:

Topic	Details
Topic 1	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 2	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 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	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.
Topic 5	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.

Amazon AWS Certified CloudOps Engineer - Associate Sample Questions (Q47-Q52):

NEW QUESTION # 47
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 pcx-b04deed9/sg-1234abcd as the source.
B. Add an inbound rule to the database's security group. Reference 444455556666/sg-1234abcd 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 111122223333/sg-1234abcd as the source.

Answer: C

Explanation:
According to AWS Cloud Operations and VPC Networking documentation, when VPCs are peered, security groups can reference peer account security groups directly to restrict traffic between them.
This feature allows specifying the security group ID (sg-1234abcd) from the source account (111122223333) in the target database's security group inbound rule. AWS automatically validates that the VPCs are connected through an existing VPC peering connection and that mutual permissions are properly configured.
You do not prefix the security group ID with the account or peering connection (Options A and B), and using the destination account ID (Option D) is incorrect because it represents the database side, not the source.
Hence, the correct configuration is Option C, which references the application servers' security group directly for precise, least-privilege access control.
Reference: AWS Cloud Operations & Networking Guide - Using Security Group References Across VPC Peering Connections

NEW QUESTION # 48
A company runs an application that logs user data to an Amazon CloudWatch Logs log group. The company discovers that personal information the application has logged is visible in plain text in the CloudWatch logs.
The company needs a solution to redact personal information in the logs by default. Unredacted information must be available only to the company's security team. Which solution will meet these requirements?

A. Create an OpenSearch domain. Create an AWS Glue workflow that runs a Detect PII transform job and streams the output to the OpenSearch domain. Configure the CloudWatch log group to stream the logs to AWS Glue. Modify the OpenSearch domain access policy to allow only the security team to access the domain.
B. Create an Amazon CloudWatch data protection policy for the application log group. Configure data identifiers for the types of personal information that the application logs. Ensure that the security team has permission to call the unmask API operation on the application log group.
C. Create a customer managed AWS KMS key. Configure the KMS key policy to allow only the security team to perform decrypt operations. Associate the KMS key with the application log group.
D. Create an Amazon S3 bucket. Create an export task from appropriate log groups in CloudWatch. Export the logs to the S3 bucket. Configure an Amazon Macie scan to discover personal data in the S3 bucket.
Invoke an AWS Lambda function to move identified personal data to a second S3 bucket. Update the S3 bucket policies to grant only the security team access to both buckets.

Answer: B

Explanation:
CloudWatch Logs data protection provides native redaction/masking of sensitive data at ingestion and query. AWS documentation states it can "detect and protect sensitive data in logs" using data identifiers, and that authorized users can "use the unmask action to view the original data." Creating a data protection policy on the log group masks PII by default for all viewers, satisfying the requirement to redact personal information. Granting only the security team permission to invoke the unmask API operation ensures that unredacted content is restricted. Option B (KMS) encrypts at rest but does not redact fields; encryption alone does not prevent plaintext visibility to authorized readers. Options A and D add complexity and latency, move data out of CloudWatch, and do not provide default inline redaction/unmask controls in CloudWatch itself. Therefore, the CloudOps-aligned, managed solution is to use CloudWatch Logs data protection with appropriate data identifiers and unmask permissions limited to the security team.
References:* AWS Certified CloudOps Engineer - Associate (SOA-C03) Exam Guide - Monitoring & Logging* Amazon CloudWatch Logs - Data Protection (masking/redaction with data identifiers)* CloudWatch Logs - Permissions for masking and unmasking sensitive data* AWS Well-Architected Framework - Security and Operational Excellence (sensitive data handling)

NEW QUESTION # 49
A CloudOps engineer is responsible for a legacy, CPU-heavy application. The application can only be scaled vertically. Currently, the application is deployed on a single t3.large Amazon EC2 instance. The system is showing 90% CPU usage and significant performance latency after a few minutes. What change should be made to alleviate the performance problem?

A. Purchase Reserved Instances.
B. Change the Amazon EBS volume to Provisioned IOPS.
C. Upgrade to a compute-optimized instance.
D. Add additional t3.large instances to the application.

Answer: C

Explanation:
The application is CPU-heavy, shows sustained high CPU utilization, and can only scale vertically. Therefore, the correct action is to move to a larger or more appropriate compute- optimized EC2 instance family. The current t3.large is a burstable general-purpose instance.
Burstable instances can experience performance limitations if CPU credits are depleted after sustained high CPU usage, which matches the "after a few minutes" latency pattern. Provisioned IOPS helps storage-bound workloads, not CPU-bound workloads. Adding more t3.large instances is horizontal scaling, which the question explicitly says the application cannot use. Reserved Instances reduce cost commitment but do not improve performance. A compute-optimized instance provides stronger sustained CPU capacity and is the correct performance optimization for a vertically scaled CPU-heavy workload.

NEW QUESTION # 50
A company has a new security policy that requires all Amazon Elastic Block Store (Amazon EBS) volumes to be encrypted at rest. The company needs to use a custom key policy to manage access to the encryption keys. The company must rotate the keys once each year.
Which solution will meet these requirements with the LEAST operational overhead?

A. Create AWS KMS asymmetric customer managed keys. Enable automatic key rotation.
B. Use AWS owned AWS KMS keys across the company's AWS environment.
C. Create AWS KMS symmetric customer managed keys. Enable automatic key rotation.
D. Create AWS KMS symmetric customer managed keys by using imported key material. Rotate the keys on a yearly basis.

Answer: C

Explanation:
AWS KMS symmetric customer managed keys with automatic key rotation provide encryption, access control, and compliance with minimal operational effort. AWS CloudOps documentation states that Amazon EBS encryption supports AWS KMS symmetric keys only, and customer managed keys allow administrators to define custom key policies to control access.
Automatic key rotation is supported for symmetric customer managed keys and rotates the backing key material once every year, fully satisfying the company's rotation requirement without manual intervention. This approach minimizes operational overhead while maintaining strong security controls and auditability.

NEW QUESTION # 51
A company requires the rotation of administrative credentials for production workloads on a regular basis. A CloudOps engineer must implement this policy for an Amazon RDS DB instance's master user password.
Which solution will meet this requirement with the LEAST operational effort?

A. Create a new String parameter in AWS Systems Manager Parameter Store. Configure automatic rotation.
B. Create a new SecureString parameter in AWS Systems Manager Parameter Store. Encrypt the parameter with an AWS Key Management Service (AWS KMS) key. Configure automatic rotation.
C. Create an AWS Lambda function to change the RDS master user password. Create an Amazon EventBridge scheduled rule to invoke the Lambda function.
D. Create a new RDS database secret in AWS Secrets Manager. Apply the secret to the RDS DB instance. Configure automatic rotation.

Answer: D

Explanation:
AWS Secrets Manager natively supports credential management and automatic rotation for Amazon RDS master user passwords. When a secret is associated with an RDS instance, Secrets Manager automatically updates the password both in the secret and on the database, without downtime or manual scripting.
"AWS Secrets Manager can automatically rotate the master user password for Amazon RDS databases. Rotation is fully managed and integrated, requiring no custom code or maintenance." Option A introduces unnecessary Lambda automation. Option B and C use Parameter Store, which does not provide direct RDS password rotation. Therefore, Option D achieves secure, automatic credential rotation with least operational effort, fully aligned with CloudOps security automation principles.

NEW QUESTION # 52
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