- (Exam Topic 1)
An application team uses an Amazon Aurora MySQL DB cluster with one Aurora Replica. The application team notices that the application read performance degrades when user connections exceed 200. The number of user connections is typically consistent around 180. with occasional sudden increases above 200 connections. The application team wants the application to automatically scale as user demand increases or decreases.
Which solution will meet these requirements?

1. A. Migrate to a new Aurora multi-master DB cluste
2. B. Modify the application database connection string.
3. C. Modify the DB cluster by changing to serverless mode whenever user connections exceed 200.
4. D. Create an auto scaling policy with a target metric of 195 DatabaseConnections
5. E. Modify the DB cluster by increasing the Aurora Replica instance size.

Correct Answer: C

- (Exam Topic 1)
A company is managing multiple AWS accounts in AWS Organizations The company is reviewing internal security of Its AWS environment The company's security administrator has their own AWS account and wants to review the VPC configuration of developer AWS accounts
Which solution will meet these requirements in the MOST secure manner?

1. A. Create an IAM policy in each developer account that has read-only access related to VPC resources Assign the policy to an IAM user Share the user credentials with the security administrator
2. B. Create an IAM policy in each developer account that has administrator access to all Amazon EC2 actions, including VPC actions Assign the policy to an IAM user Share the user credentials with the security administrator
3. C. Create an IAM policy in each developer account that has administrator access related to VPC resources Assign the policy to a cross-account IAM role Ask the security administrator to assume the role from their account
4. D. Create an IAM policy m each developer account that has read-only access related to VPC resources Assign the policy to a cross-account IAM role Ask the security administrator to assume the role from their account

Correct Answer: D

- (Exam Topic 1)
A company must migrate its applications to AWS The company is using Chef recipes for configuration management The company wants to continue to use the existing Chef recipes after the applications are migrated to AWS.
What is the MOST operationally efficient solution that meets these requirements?

1. A. Use AWS Cloud Format ion to create an Amazon EC2 instance, install a Chef server, and add Chefrecipes.
2. B. Use AWS CloudFormation to create a stack and add layers for Chef recipes.
3. C. Use AWS Elastic Beanstalk with the Docker platform to upload Chef recipes.
4. D. Use AWS OpsWorks to create a stack and add layers with Chef recipes.

Correct Answer: D

- (Exam Topic 1)
A SysOps administrator is evaluating Amazon Route 53 DNS options to address concerns about high availability for an on-premises website. The website consists of two servers: a primary active server and a secondary passive server. Route 53 should route traffic to the primary server if the associated health check returns 2xx or 3xx HTTP codes. All other traffic should be directed to the secondary passive server. The failover record type, set ID. and routing policy have been set appropriately for both primary and secondary servers.
Which next step should be taken to configure Route 53?

1. A. Create an A record for each serve
2. B. Associate the records with the Route 53 HTTP health check.
3. C. Create an A record for each serve
4. D. Associate the records with the Route 53 TCP health check.
5. E. Create an alias record for each server with evaluate target health set to ye
6. F. Associate the records withthe Route 53 HTTP health check.
7. G. Create an alias record for each server with evaluate target health set to ye
8. H. Associate the records with the Route 53 TCP health check.

Correct Answer: A

- (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