SOA-C02 Free Practice Test

- (Exam Topic 1)
A company uses an Amazon Elastic File System (Amazon EFS) file system to share files across many Linux Amazon EC2 instances. A SysOps administrator notices that the file system's PercentIOLimit metric is consistently at 100% for 15 minutes or longer. The SysOps administrator also notices that the application that reads and writes to that file system is performing poorly. They application requires high throughput and IOPS while accessing the file system.
What should the SysOps administrator do to remediate the consistently high PercentIOLimit metric?

1. A. Create a new EFS file system that uses Max I/O performance mod
2. B. Use AWS DataSync to migrate data to the new EFS file system.
3. C. Create an EFS lifecycle policy to transition future files to the Infrequent Access (IA) storage class to improve performanc
4. D. Use AWS DataSync to migrate existing data to IA storage.
5. E. Modify the existing EFS file system and activate Max I/O performance mode.
6. F. Modify the existing EFS file system and activate Provisioned Throughput mode.

Correct Answer: A
To support a wide variety of cloud storage workloads, Amazon EFS offers two performance modes, General Purpose mode and Max I/O mode. You choose a file system's performance mode when you create it, and it cannot be changed. If the PercentIOLimit percentage returned was at or near 100 percent for a significant amount of time during the test, your application should use the Max I/O performance mode. https://docs.aws.amazon.com/efs/latest/ug/performance.html

- (Exam Topic 1)
A company uses an AWS CloudFormation template to provision an Amazon EC2 instance and an Amazon RDS DB instance A SysOps administrator must update the template to ensure that the DB instance is created before the EC2 instance is launched
What should the SysOps administrator do to meet this requirement?

1. A. Add a wait condition to the template Update the EC2 instance user data script to send a signal after the EC2 instance is started
2. B. Add the DependsOn attribute to the EC2 instance resource, and provide the logical name of the RDS resource
3. C. Change the order of the resources in the template so that the RDS resource is listed before the EC2 instance resource
4. D. Create multiple templates Use AWS CloudFormation StackSets to wait for one stack to complete before the second stack is created

Correct Answer: B
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-dependson.html Syntax The DependsOn attribute can take a single string or list of strings. "DependsOn" : [ String, ... ]
Example The following template contains an AWS::EC2::Instance resource with a DependsOn attribute that specifies myDB, an AWS::RDS::DBInstance. When CloudFormation creates this stack, it first creates myDB, then creates Ec2Instance.

- (Exam Topic 1)
A SysOps administrator notices a scale-up event for an Amazon EC2 Auto Scaling group Amazon CloudWatch shows a spike in the RequestCount metric for the associated Application Load Balancer The administrator would like to know the IP addresses for the source of the requests
Where can the administrator find this information?

1. A. Auto Scaling logs
2. B. AWS CloudTrail logs
3. C. EC2 instance logs
4. D. Elastic Load Balancer access logs

Correct Answer: D
Elastic Load Balancing provides access logs that capture detailed information about requests sent to your load balancer. Each log contains information such as the time the request was received, the client's IP address, latencies, request paths, and server responses. You can use these access logs to analyze traffic patterns and troubleshoot issues.
https://docs.aws.amazon.com/elasticloadbalancing/latest/application/load-balancer-access-logs.html

- (Exam Topic 1)
A company has a critical serverless application that uses multiple AWS Lambda functions. Each Lambda function generates 1 GB of log data daily in its own Amazon CloudWatch Logs log group. The company's security team asks for a count of application errors, grouped by type, across all of the log groups.
What should a SysOps administrator do to meet this requirement?

1. A. Perform a CloudWatch Logs Insights query that uses the stats command and count function.
2. B. Perform a CloudWatch Logs search that uses the groupby keyword and count function.
3. C. Perform an Amazon Athena query that uses the SELECT and GROUP BY keywords.
4. D. Perform an Amazon RDS query that uses the SELECT and GROUP BY keywords.

Correct Answer: A

- (Exam Topic 1)
A SysOps administrator has used AWS Cloud Formation to deploy a sereness application into a production VPC. The application consists of an AWS Lambda function, an Amazon DynamoOB table, and an Amazon API Gateway API. The SysOps administrator must delete the AWS Cloud Formation stack without deleting the DynamoOB table.
Which action should the SysOps administrator take before deleting the AWS Cloud Formation stack?

1. A. Add a Retain deletion policy to the DynamoOB resource in the AWS CloudFormation stack.
2. B. Add a Snapshot deletion policy to the DynamoOB resource In the AWS CloudFormation stack.
3. C. Enable termination protection on the AWS Cloud Formation stack.
4. D. Update the application's IAM policy with a Deny statement for the dynamodb:DeleteTabie action.

Correct Answer: A