Amazon SAA-C03 Online Practice Questions and Exam Preparation

Amazon SAA-C03 Online Questions & Answers

• Question 961:

  A company hosts its application on AWS. The company uses Amazon Cognito to manage users. When users log in to the application, the application fetches required data from Amazon DynamoDB by using a REST API that is hosted in Amazon API Gateway. The company wants an AWS managed solution that will control access to the REST API to reduce development efforts.

  Which solution will meet these requirements with the LEAST operational overhead?

  A. Configure an AWS Lambda function to be an authorizer in API Gateway to validate which user made the request.
  B. For each user, create and assign an API key that must be sent with each request. Validate the key by using an AWS Lambda function.
  C. Send the user's email address in the header with every request. Invoke an AWS Lambda function to validate that the user with that email address has proper access.
  D. Configure an Amazon Cognito user pool authorizer in API Gateway to allow Amazon Cognito to validate each request.
  D. Configure an Amazon Cognito user pool authorizer in API Gateway to allow Amazon Cognito to validate each request.

• Question 962:

  A company wants to run its payment application on AWS. The application receives payment notifications from mobile devices. Payment notifications require a basic validation before they are sent for further processing. The backend processing application is long running and requires compute and memory to be adjusted. The company does not want to manage the infrastructure.

  Which solution will meet these requirements with the LEAST operational overhead?

  A. Create an Amazon Simple Queue Service (Amazon SQS) queue. Integrate the queue with an Amazon EventBridge rule to receive payment notifications from mobile devices. Configure the rule to validate payment notifications and send the notifications to the backend application. Deploy the backend application on Amazon Elastic Kubernetes Service (Amazon EKS) Anywhere. Create a standalone cluster.
  B. Create an Amazon API Gateway API. Integrate the API with an AWS Step Functions state machine to receive payment notifications from mobile devices. Invoke the state machine to validate payment notifications and send the notifications to the backend application. Deploy the backend application on Amazon Elastic Kubernetes Service (Amazon EKS). Configure an EKS cluster with self-managed nodes.
  C. Create an Amazon Simple Queue Service (Amazon SQS) queue. Integrate the queue with an Amazon EventBridge rule to receive payment notifications from mobile devices. Configure the rule to validate payment notifications and send the notifications to the backend application. Deploy the backend application on Amazon EC2 Spot Instances. Configure a Spot Fleet with a default allocation strategy.
  D. Create an Amazon API Gateway API. Integrate the API with AWS Lambda to receive payment notifications from mobile devices. Invoke a Lambda function to validate payment notifications and send the notifications to the backend application. Deploy the backend application on Amazon Elastic Container Service (Amazon ECS). Configure Amazon ECS with an AWS Fargate launch type.
  D. Create an Amazon API Gateway API. Integrate the API with AWS Lambda to receive payment notifications from mobile devices. Invoke a Lambda function to validate payment notifications and send the notifications to the backend application. Deploy the backend application on Amazon Elastic Container Service (Amazon ECS). Configure Amazon ECS with an AWS Fargate launch type.

• Question 963:

  A company has a web application hosted over 10 Amazon EC2 instances with traffic directed by Amazon Route 53. The company occasionally experiences a timeout error when attempting to browse the application. The networking team finds that some DNS queries return IP addresses of unhealthy instances, resulting in the timeout error.

  What should a solutions architect implement to overcome these timeout errors?

  A. Create a Route 53 simple routing policy record for each EC2 instance. Associate a health check with each record.
  B. Create a Route 53 failover routing policy record for each EC2 instance. Associate a health check with each record.
  C. Create an Amazon CloudFront distribution with EC2 instances as its origin. Associate a health check with the EC2 instances.
  D. Create an Application Load Balancer (ALB) with a health check in front of the EC2 instances. Route to the ALB from Route 53.
  D. Create an Application Load Balancer (ALB) with a health check in front of the EC2 instances. Route to the ALB from Route 53.

• Question 964:

  A company creates operations data and stores the data in an Amazon S3 bucket. For the company's annual audit, an external consultant needs to access an annual report that is stored in the S3 bucket. The external consultant needs to access the report for 7 days.

  The company must implement a solution to allow the external consultant access to only the report.

  Which solution will meet these requirements with the MOST operational efficiency?

  A. Create a new S3 bucket that is configured to host a public static website. Migrate the operations data to the new S3 bucket. Share the S3 website URL with the external consultant.
  B. Enable public access to the S3 bucket for 7 days. Remove access to the S3 bucket when the external consultant completes the audit.
  C. Create a new IAM user that has access to the report in the S3 bucket. Provide the access keys to the external consultant. Revoke the access keys after 7 days.
  D. Generate a presigned URL that has the required access to the location of the report on the S3 bucket. Share the presigned URL with the external consultant.
  D. Generate a presigned URL that has the required access to the location of the report on the S3 bucket. Share the presigned URL with the external consultant.

• Question 965:

  A bicycle sharing company is developing a multi-tier architecture to track the location of its bicycles during peak operating hours. The company wants to use these data points in its existing analytics platform. A solutions architect must determine the most viable multi-tier option to support this architecture. The data points must be accessible from the REST API.

  Which action meets these requirements for storing and retrieving location data?

  A. Use Amazon Athena with Amazon S3.
  B. Use Amazon API Gateway with AWS Lambda.
  C. Use Amazon QuickSight with Amazon Redshift.
  D. Use Amazon API Gateway with Amazon Kinesis Data Analytics.
  B. Use Amazon API Gateway with AWS Lambda.

• Question 966:

  A company runs a web application that uses Amazon RDS for MySQL to store relational data. Data in the database does not change frequently.

  A solutions architect notices that during peak usage times, the database has performance issues when it serves the data. The company wants to improve the performance of the database.

  Which combination of steps will meet these requirements? (Choose Two.)

  A. Integrate AWS WAF with the application.
  B. Create a read replica for the database. Redirect read traffic to the read replica.
  C. Create an Amazon ElastiCache (Memcached) cluster. Configure the application and the database to integrate with the cluster.
  D. Use the Amazon S3 One Zone-Infrequent Access (S3 One Zone-IA) storage class to store the data that changes infrequently.
  E. Migrate the database to Amazon DynamoDB. Configure the application to use the DynamoDB database.
  B. Create a read replica for the database. Redirect read traffic to the read replica.
  C. Create an Amazon ElastiCache (Memcached) cluster. Configure the application and the database to integrate with the cluster.

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  Explanation

  To improve read performance for a MySQL-based RDS database under load, you can:

  Use Read Replicas: Amazon RDS supports MySQL read replicas, which help offload read operations from the primary database, improving performance during high traffic.

  Use ElastiCache (Memcached): Adding an in-memory cache layer using Amazon ElastiCache reduces the load on the RDS instance by serving frequent queries directly from memory, especially when data is not updated often.

  Option A (AWS WAF) is for web security, not database performance.

  Option D relates to storage optimization, not query latency.

  Option E would require re-architecting from relational to NoSQL, which is unnecessary and disruptive.

• Question 967:

  A company deploys an application on five Amazon EC2 instances. An Application Load Balancer (ALB) distributes traffic to the instances by using a target group. The average CPU usage on each of the instances is below 10% most of the time, with occasional surges to 65%.

  A solutions architect needs to implement a solution to automate the scalability of the application. The solution must optimize the cost of the architecture and must ensure that the application has enough CPU resources when surges occur.

  Which solution will meet these requirements?

  A. Create an Amazon CloudWatch alarm that enters the ALARM state when the CPUUtilization metric is less than 20%. Create an AWS Lambda function that the CloudWatch alarm invokes to terminate one of the EC2 instances in the ALB target group.
  B. Create an EC2 Auto Scaling group. Select the existing ALB as the load balancer and the existing target group as the target group. Set a target tracking scaling policy that is based on the ASGAverageCPUUtilization metric. Set the minimum instances to 2, the desired capacity to 3, the maximum instances to 6, and the target value to 50%. Add the EC2 instances to the Auto Scaling group.
  C. Create an EC2 Auto Scaling group. Select the existing ALB as the load balancer and the existing target group as the target group. Set the minimum instances to 2, the desired capacity to 3, and the maximum instances to 6. Add the EC2 instances to the Auto Scaling group.
  D. Create two Amazon CloudWatch alarms. Configure the first CloudWatch alarm to enter the ALARM state when the average CPUUtilization metric is below 20%. Configure the second CloudWatch alarm to enter the ALARM state when the average CPUUtilization matric is above 50%. Configure the alarms to publish to an Amazon Simple Notification Service (Amazon SNS) topic to send an email message. After receiving the message, log in to decrease or increase the number of EC2 instances that are running.
  B. Create an EC2 Auto Scaling group. Select the existing ALB as the load balancer and the existing target group as the target group. Set a target tracking scaling policy that is based on the ASGAverageCPUUtilization metric. Set the minimum instances to 2, the desired capacity to 3, the maximum instances to 6, and the target value to 50%. Add the EC2 instances to the Auto Scaling group.

• Question 968:

  An application allows users at a company's headquarters to access product data. The product data is stored in an Amazon RDS MySQL DB instance. The operations team has isolated an application performance slowdown and wants to separate read traffic from write traffic. A solutions architect needs to optimize the application's performance quickly.

  What should the solutions architect recommend?

  A. Change the existing database to a Multi-AZ deployment. Serve the read requests from the primary Availability Zone.
  B. Change the existing database to a Multi-AZ deployment. Serve the read requests from the secondary Availability Zone.
  C. Create read replicas for the database. Configure the read replicas with half of the compute and storage resources as the source database.
  D. Create read replicas for the database. Configure the read replicas with the same compute and storage resources as the source database.
  D. Create read replicas for the database. Configure the read replicas with the same compute and storage resources as the source database.

• Question 969:

  A company plans to run a high performance computing (HPC) workload on Amazon EC2 Instances. The workload requires low-latency network performance and high network throughput with tightly coupled node-to-node communication.

  Which solution will meet these requirements?

  A. Configure the EC2 instances to be part of a cluster placement group.
  B. Launch the EC2 instances with Dedicated Instance tenancy.
  C. Launch the EC2 instances as Spot Instances.
  D. Configure an On-Demand Capacity Reservation when the EC2 instances are launched.
  A. Configure the EC2 instances to be part of a cluster placement group.

• Question 970:

  A company wants to run a hybrid workload for data processing. The data needs to be accessed by on-premises applications for local data processing using an NFS protocol, and must also be accessible from the AWS Cloud for further analytics and batch processing.

  Which solution will meet these requirements?

  A. Use an AWS Storage Gateway file gateway to provide file storage to AWS, then perform analytics on this data in the AWS Cloud.
  B. Use an AWS Storage Gateway tape gateway to copy the backup of the local data to AWS, then perform analytics on this data in the AWS Cloud.
  C. Use an AWS Storage Gateway volume gateway in a stored volume configuration to regularly take snapshots of the local data, then copy the data to AWS.
  D. Use an AWS Storage Gateway volume gateway in a cached volume configuration to back up all the local storage in the AWS Cloud, then perform analytics on this data in the cloud.
  A. Use an AWS Storage Gateway file gateway to provide file storage to AWS, then perform analytics on this data in the AWS Cloud.

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  Explanation

  AWS Storage Gateway file gateway presents a file interface backed by Amazon S3 and supports NFS.

  This allows local applications to access data via NFS while also enabling cloud applications to use the data stored in S3 for analytics and processing, fulfilling both hybrid and cloud-native requirements.

  References:

  " AWS Storage Gateway file gateway offers NFS and SMB access to data stored in Amazon S3, supporting hybrid workloads for local and cloud access. "

  Source: AWS Certified Solutions Architect?Official Study Guide, Hybrid and Storage Gateway section.