| Question.16 A SysOps administrator is designing a solution for an Amazon RDS for PostgreSQL DB instance. Database credentials must be stored and rotated monthly. The applications that connect to the DB instance send write-intensive traffic with variable client connections that sometimes increase significantly in a short period of time. Which solution should a SysOps administrator choose to meet these requirements? (A) Configure AWS Key Management Service (AWS KMS) to automatically rotate the keys for the DB instance. Use RDS Proxy to handle the increases in database connections. (B) Configure AWS Key Management Service (AWS KMS) to automatically rotate the keys for the DB instance. Use RDS read replicas to handle the increases in database connections. (C) Configure AWS Secrets Manager to automatically rotate the credentials for the DB instance. Use RDS Proxy to handle the increases in database connections. (D) Configure AWS Secrets Manager to automatically rotate the credentials for the DB instance. Use RDS read replicas to handle the increases in database connections. |
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Answer: C
| Question.17 A company has deployed an application on AWS. The application runs on a fleet of Linux Amazon EC2 instances that are in an Auto Scaling group. The Auto Scaling group is configured to use launch templates. The launch templates launch Amazon Elastic Block Store (Amazon EBS) backed EC2 instances that use General Purpose SSD (gp3) EBS volumes for primary storage. A SysOps administrator needs to implement a solution to ensure that all the EC2 instances can share the same underlying files. The solution also must ensure that the data is consistent. Which solution will meet these requirements? (A) Create an Amazon Elastic File System (Amazon EFS) file system. Create a new launch template version that includes user data that mounts the EFS file system. Update the Auto Scaling group to use the new launch template version to cycle in newer EC2 instances and to terminate the older EC2 instances. (B) Enable Multi-Attach on the EBS volumes. Create a new launch template version that includes user data that mounts the EBS volume. Update the Auto Scaling group to use the new template version to cycle in newer EC2 instances and to terminate the older EC2 instances. (C) Create a cron job that synchronizes the data between the EBS volumes for all the EC2 instances in the Auto Scaling group. Create a lifecycle hook during instance launch to configure the cron job on all the EC2 instances. Rotate out the older EC2 instances. (D) Create a new launch template version that creates an Amazon Elastic File System (Amazon EFS) file system. Update the Auto Scaling group to use the new template version to cycle in newer EC2 instances and to terminate the older EC2 instances. |
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Answer: D
| Question.18 A company hosts its website in the us-east-1 Region. The company is preparing to deploy its website into the eu-central-1 Region. Website visitors who are located in Europe should access the website that is hosted in eu-central-1. All other visitors access the website that is hosted in us-east-1. The company uses Amazon Route 53 to manage the websites DNS records. Which routing policy should a SysOps administrator apply to the Route 53 record set to meet these requirements? (A) Geolocation routing policy (B) Geoproximity routing policy (C) Latency routing policy (D) Multivalue answer routing policy |
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Answer: A
| Question.19 A company decides to stop non-production Amazon EC2 instances during the EC2 instances. The company’s IT manager must receive notification in near real time whenever an EC2 instance that has an environment type tag value of non-production is started during the night. Which solution will meet this requirement with the MOST operational efficiency? (A) Configure an AWS Lambda function with an SMTP client library. Subscribe the Lambda function to the AWS Health Dashboard to receive notification whenever an EC2 instance is in the running state. Configure the Lambda function to use Amazon Pinpoint to send email notifications to the IT manager. Deploy a second Lambda function to throttle calls from the first Lambda function during the daytime. (B) Deploy an AWS Lambda function that queries the Amazon EC2 API to determine the state of each EC2 instance. Use the EC2 instance scheduler to configure the Lambda function to run every minute during the night and to send an email notification to the IT manager for each non-production EC2 instance that is in the running state. (C) Create an Amazon EventBridge rule that includes the EC2 Instance State-change Notification event type. Filter the event to capture only the running state. Create an AWS Lambda function as a target of the rule. Configure the Lambda function to check the current time and the EC2 instances tags to determine the environment type. Create an Amazon Simple Notification Service (Amazon SNS) topic as a target of the Lambda function for notifications. Subscribe the IT manager’s email address to the SNS topic. (D) Store the EC2 instance metadata, including the environment type, in an Amazon DynamoDB table. Deploy a custom application to an EC2 instance. Configure the custom application to poll the DynamoDB data every minute during the night and to query the Amazon EC2 API to determine the state of each instance. Additionally, configure the custom application to send an email notification to the IT manager for each non-production EC2 instance that is in the running state. |
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Answer: C
| Question.20 A company runs an application on an Amazon EC2 instance. A SysOps administrator creates an Auto Scaling group and an Application Load Balancer (ALB) to handle an increase in demand. However, the EC2 instances are failing the health check. What should the SysOps administrator do to troubleshoot this issue? (A) Verify that the Auto Scaling group is configured to use all AWS Regions. (B) Verify that the application is running on the protocol and the port that the listener is expecting. (C) Verify the listener priority in the ALB. Change the priority if necessary. (D) Verify the maximum number of instances in the Auto Scaling group. Change the number if necessary. |
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Answer: D