Free SOA-C03 sample questions

Correct answer: Create a CloudWatch cross-account observability link in the monitoring account and link the source accounts.

CloudWatch cross-account observability allows a monitoring account to view metrics, logs, and traces from multiple source accounts. By setting up the link, the management account can display widgets from member accounts on a single dashboard without complex role assumption scripts.

Correct answer: AWS X-Ray

AWS X-Ray helps developers and engineers analyze and debug distributed applications, such as those built using a microservices architecture. It provides a service map and trace view to identify performance bottlenecks and latency issues in Lambda functions.

Correct answer: Modify the volume to General Purpose SSD (gp3).

gp3 volumes allow you to provision IOPS and throughput independently of storage capacity. Unlike gp2, where IOPS are tied to size (3 IOPS/GB), gp3 delivers a baseline of 3,000 IOPS and allows scaling up to 16,000 IOPS without increasing the volume size, often at a lower cost.

Correct answers: Use the S3 multipart upload API.; Enable S3 Transfer Acceleration on the bucket.

Multipart upload is recommended for files larger than 100 MB and required for files larger than 5 GB. It improves throughput by uploading parts in parallel.

S3 Transfer Acceleration uses AWS Edge Locations to route data over the optimized AWS global network instead of the public internet, significantly improving speed for long-distance transfers. Multipart uploads allow large files to be broken into chunks, improving throughput and reliability by allowing retries of individual failed parts.

Correct answer: Amazon RDS Performance Insights

Amazon RDS Performance Insights is a database performance tuning and monitoring feature that helps you quickly assess the load on your database. It visualizes the database load and filters it by waits, SQL statements, hosts, or users, allowing you to pinpoint the specific queries causing high CPU.

Correct answer: Use AWS Systems Manager Run Command to execute a shell script that restarts the service.

AWS Systems Manager Run Command allows you to remotely and securely manage the configuration of your managed instances. It is the standard, managed way to run scripts (like service restarts) on instances without SSH.

Correct answer: Create an Amazon EventBridge rule with an event pattern matching the 'AuthorizeSecurityGroupIngress' API call with specific parameters, targeting an SNS topic.

EventBridge allows for content-based filtering of events. By creating a rule that matches the specific API call (AuthorizeSecurityGroupIngress) and inspecting the request parameters (cidrIp: 0.0.0.0/0, port: 22), you can trigger immediate alerts via SNS. This is faster and more granular than metric filters.

Correct answers: Compute Optimizer requires at least 14 days of historical data to generate recommendations.; The CloudWatch Agent must be installed to get memory utilization recommendations.

While Compute Optimizer can provide recommendations with less data (min 30 hours for some), for optimal and full recommendations, it typically analyzes up to 14 days of history. However, enabling the enhanced infrastructure metrics feature allows it to look back 3 months. In the context of standard requirements, having sufficient history (typically cited as days) is key.

Compute Optimizer uses CloudWatch metrics. Since memory is not a default EC2 metric, the CloudWatch agent is required for Compute Optimizer to analyze memory usage and provide accurate right-sizing recommendations including memory.