SOA-C03 Free Practice Test

A company runs an application on Amazon EC2 instances in an Auto Scaling group. Scale- out actions take a long time because of long-running boot scripts. The CloudOps engineer must reduce scale-out time without overprovisioning.
Which solution will meet these requirements?

1. A. Change the launch configuration to use a larger instance size.
2. B. Increase the minimum number of instances in the Auto Scaling group.
3. C. Add a predictive scaling policy to the Auto Scaling group.
4. D. Add a warm pool to the Auto Scaling group.

Correct Answer: D

An ecommerce company uses Amazon ElastiCache (Redis OSS) for caching product queries. The CloudOps engineer observes a large number of cache evictions in Amazon CloudWatch metrics and needs to reduce evictions while retaining popular data in cache.
Which solution meets these requirements with the least operational overhead?

1. A. Add another node to the ElastiCache cluster.
2. B. Increase the ElastiCache TTL value.
3. C. Decrease the ElastiCache TTL value.
4. D. Migrate to a new ElastiCache cluster with larger nodes.

Correct Answer: D

A company has a web application that is experiencing performance problems many times each night. A root cause analysis reveals sudden increases in CPU utilization that last 5 minutes on an Amazon EC2 Linux instance. A CloudOps engineer must find the process ID (PID) of the service or process that is consuming more CPU.
What should the CloudOps engineer do to collect the process utilization information with the LEAST amount of effort?

1. A. Configure the Amazon CloudWatch agent procstat plugin to capture CPU process metrics.
2. B. Configure an AWS Lambda function to run every minute to capture the PID and send a notification.
3. C. Log in to the EC2 instance each night and run the top command.
4. D. Use the default Amazon CloudWatch CPUUtilization metric.

Correct Answer: A

A company deploys an application on Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer (ALB). The company wants to protect the application from SQL injection attacks.
Which solution will meet this requirement?

1. A. Deploy AWS Shield Advanced in front of the AL
2. B. Enable SQL injection filtering.
3. C. Deploy AWS Shield Standard in front of the AL
4. D. Enable SQL injection filtering.
5. E. Deploy a vulnerability scanner on each EC2 instanc
6. F. Continuously scan the application code.
7. G. Deploy AWS WAF in front of the AL
8. H. Subscribe to an AWS Managed Rule for SQL injection filtering.

Correct Answer: D

A company hosts a static website in Amazon S3 behind an Amazon CloudFront distribution. When new versions are deployed, users sometimes do not see updated content immediately.
Which solution will meet this requirement?

1. A. Configure the CloudFront distribution to add a custom Cache-Control header to requests for content from the S3 bucket.
2. B. Modify the distribution settings to specify the protocol as HTTPS only.
3. C. Attach the CachingOptimized managed cache policy to the distribution.
4. D. Create a CloudFront invalidation.

Correct Answer: D