SOA-C03 practice questions 91–100

1. Question 91 · 189 in bank

   A company plans to deploy a database on an Amazon Aurora MySQL DB cluster. The database will store data for a demonstration environment. The data must be reset on a daily basis. What is the MOST operationally efficient solution that meets these requirements?

   • ACreate a manual snapshot of the DB cluster after the data has been populated. Create an Amazon EventBridge rule to invoke an AWS Lambda function on a daily basis. Configure the function to restore the snapshot and then delete the previous DB cluster.
   • BEnable the Backtrack feature during the creation of the DB cluster. Specify a target backtrack window of 48 hours. Create an Amazon EventBridge rule to invoke an AWS Lambda function on a daily basis. Configure the function to perform a backtrack operation.
   • CExport a manual snapshot of the DB cluster to an Amazon S3 bucket after the data has been populated. Create an Amazon EventBridge rule to invoke an AWS Lambda function on a daily basis. Configure the function to restore the snapshot from Amazon S3.
   • DSet the DB cluster backup retention period to 2 days. Create an Amazon EventBridge rule to invoke an AWS Lambda function on a daily basis. Configure the function to restore the DB cluster to a point in time and then delete the previous DB cluster.

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   Answer: B

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2. Question 92 · 189 in bank

   A company's application runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The company has configured an Amazon CloudWatch alarm to monitor the HTTPCode_Target_5XX_Count metric. The application crashes every few days during business hours. The crashes trigger the CloudWatch alarm and result in service disruption. The cause of the crashes is a memory leak in the application. While developers work to fix the problem, a CloudOps engineer needs to implement a temporary solution. The solution must automatically reboot the EC2 instances every day and must minimize application disruption during business hours. Which solution will meet these requirements?

   • ACreate an Amazon EventBridge rule that is scheduled to run outside of business hours. Configure the rule to invoke the StartInstances operation on the EC2 instances.
   • BUse AWS Systems Manager to create a daily maintenance window that is outside of business hours. Register the EC2 instances as a target. Assign the AWS-RestartEC2Instance runbook to the maintenance window.
   • CConfigure an additional CloudWatch alarm to monitor the StatusCheckFailed_System metric for the EC2 instances. Configure an EC2 action on the additional alarm to reboot the instances.
   • DConfigure an additional CloudWatch alarm that is triggered every time the application crashes. Configure an EC2 action on the additional alarm to restart the application on the EC2 instances.

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   Answer: B

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3. Question 93 · 189 in bank

   A company has an Amazon S3 bucket that has server-side encryption with AWS KMS keys (SSE-KMS) enabled. Several applications read from the S3 bucket for daily reporting. The company clears the data in the S3 bucket weekly when the company moves the data into a data warehouse. As more applications read from the S3 bucket, the cost of KMS-related transactions is increasing. A CloudOps engineer needs to reduce the KMS costs without removing S3 encryption and without losing access to existing objects. Which solution will meet these requirements with the LEAST operational overhead?

   • AEnable S3 Bucket Keys on the S3 bucket. Specify the existing KMS key.
   • BChange the encryption type on the S3 bucket to server-side encryption with customer-provided keys (SSE-C).
   • CUse Amazon CloudFront to cache the objects in the S3 bucket and to serve the objects to the applications.
   • DConfigure the applications to connect to the S3 bucket through an S3 access point.

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   Answer: A

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4. Question 94 · 189 in bank

   A retail company runs a web application. The application uses an Application Load Balancer (ALB) to distribute traffic across multiple Amazon EC2 instances in two Availability Zones. The application experiences high traffic during flash sales. The company needs to ensure even distribution of requests across all healthy instances. Additionally, the company requires session persistence for shopping cart functionality. Which configuration will meet these requirements with the LEAST administrative effort?

   • AConfigure the ALB target group to use the round robin algorithm. Enable stickiness and cross-zone load balancing.
   • BSwitch the ALB to a Network Load Balancer. Modify the target group to use the least outstanding requests algorithm. Enable stickiness. Disable cross-zone load balancing.
   • CConfigure the ALB target group to use the weighted round robin algorithm. Implement session persistence by using AWS Lambda functions to store session data in Amazon DynamoDB.
   • DConfigure the ALB listener with path-based routing to direct shopping cart requests to a dedicated target group with sticky sessions. Use the round robin algorithm without stickiness for a second target group.

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   Answer: A

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5. Question 95 · 189 in bank

   A company runs a web application on Amazon EC2 instances behind an Application Load Balancer (ALB). The company needs an AWS Lambda function to perform a custom recovery procedure on the application server when the application returns an HTTP 500 status code. A CloudOps engineer needs to design a solution that detects HTTP 500 status codes and runs the Lambda function reliably when errors are detected. Which solution will meet these requirements?

   • AConfigure an Amazon CloudWatch alarm on the HTTPCode_Target_5XX_Count ALB target group metric. Set the alarm action to run the Lambda function.
   • BDeploy a new Lambda function that continuously scans the ALB access logs in Amazon S3 to detect HTTP 500 status codes and then invokes the existing lambda function.
   • CEnable AWS CloudTrail on the application instances. Configure Amazon CloudWatch Logs metric filters to detect HTTP 500 status codes and run the Lambda function.
   • DCreate an Amazon EventBridge rule for all ALB request events that invokes the Lambda function. Configure the Lambda function to filter for HTTP 500 status codes internally.

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   Answer: A

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6. Question 96 · 189 in bank

   A company uses default settings to create an AWS Lambda function. The function needs to access an Amazon RDS database that is in a private subnet of a VPC. The function has the correct IAM permissions to access the database. The private subnet has appropriate routing configurations and is accessible from within the VPC. However, the Lambda function is unable to connect to the RDS instance. What is the likely reason the Lambda function cannot connect to the RDS instance?

   • AThe company did not set the RDS instance as the destination for the Lambda function in the function configuration.
   • BThe Lambda function configuration did not deploy the function in the same VPC that contains the RDS instance.
   • CThe VPC where the Lambda function is deployed is not peered with the VPC where the RDS instance is deployed.
   • DThe security group for the Lambda function does not allow outbound access to the RDS instance.

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   Answer: B

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7. Question 97 · 189 in bank

   Select 2

   A CloudOps engineer is unable to launch Amazon EC2 instances into a VPC because there are no available private IPv4 addresses in the VPC. Which combination of actions must the CloudOps engineer take to launch the instances? (Choose two.)

   • AAssociate a secondary IPv4 CIDR block with the VPC.
   • BAssociate a primary IPv6 CIDR block with the VPC.
   • CCreate a new subnet for the VPC.
   • DModify the CIDR block of the VPC.
   • EModify the CIDR block of the subnet that is associated with the instances.

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   Answer: AC

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8. Question 98 · 189 in bank

   Select 2

   A company is running a stateless application. The application consists of a web server and a PostgreSQL database that run on a single Amazon EC2 instance. The EC2 instance becomes overloaded during times of high application traffic, leading to slow response times. A CloudOps engineer needs to implement a solution to resolve the application's performance issues. The solution must accommodate increased application traffic as the number of users continues to grow. The solution also must make the application highly available. Which combination of steps will meet these requirements? (Choose two.)

   • ACreate an Amazon CloudFront distribution. Specify the EC2 instance as the origin.
   • BConfigure an EC2 Auto Scaling group of web servers behind an Application Load Balancer.
   • CUpgrade the existing EC2 instance to a larger instance type with more CPU and memory resources.
   • DUse an Amazon RDS for PostgreSQL Multi-AZ deployment for the database. Point the application to the new endpoint.
   • EUpgrade the PostgreSQL database on the EC2 instance to a newer version.

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   Answer: BD

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9. Question 99 · 189 in bank

   A CloudOps engineer needs to configure a caching layer for a read-heavy application that uses an Amazon RDS for PostgreSQL database. The application exists across three AWS Regions. Read and write activities occur in the primary Region. In the two secondary Regions, read-only activity occurs on RDS for PostgreSQL cross-Region read replicas. The cache in each Region must consist of the same data to provide a consistent user experience across Regions. Which solution for the caching layer will meet these requirements?

   • ASet up an Amazon ElastiCache (Redis OSS) global datastore. Include a read and write cluster in the primary Region. Include a read-only cluster in each secondary Region.
   • BSet up an Amazon ElastiCache (Memcached) global database. Include a read and write cluster in the primary Region. Include a read-only cluster in each secondary Region.
   • CSet up query caching on the RDS for PostgreSQL database in the primary Region. Configure query cache replication to the secondary RDS cross-Region replicas.
   • DSet up an Amazon ElastiCache (Memcached) cluster with cluster mode enabled in all three Regions. Set up ElastiCache cross-Region replication from the primary Region to the secondary Regions.

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   Answer: A

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10. Question 100 · 189 in bank

    A company uses a large number of Linux based Amazon EC2 instances to run business operations such as ordering, fulfillment, and billing. The company uses AWS Systems Manager to manage the EC2 instances. The company wants to ensure that the Systems Manager Agent (SSM Agent) is always up to date with the latest version. Which solution will meet this requirement in the MOST operationally efficient way?

    • AEnable the Auto update SSM Agent setting in Systems Manager Fleet Manager.
    • BSubscribe to SSM Agent notifications on Github. Configure the subscription events to invoke an Amazon SNS topic. Configure the SNS topic to run a custom AWS Lambda function to update the SSM Agent by using the Systems Manager Run Command API.
    • CEnable the Auto update SSM Agent setting in Systems Manager Patch Manager.
    • DSubscribe to SSM Agent notifications on Github. Configure the subscription events to invoke an Amazon SNS topic. Configure the topic to run a custom AWS Lambda function to update the SSM Agent by using a Systems Manager Automation document.

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    Answer: A

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SOA-C03 practice, question 91. 189 questions available.