SAA-C03 practice questions 251–260

1. Question 251 · 1017 in bank

   A company wants to run an in-memory database for a latency-sensitive application that runs on Amazon EC2 instances. The application processes more than 100,000 transactions each minute and requires high network throughput. A solutions architect needs to provide a cost-effective network design that minimizes data transfer charges. Which solution meets these requirements?

   • ALaunch all EC2 instances in the same Availability Zone within the same AWS Region. Specify a placement group with cluster strategy when launching EC2 instances.
   • BLaunch all EC2 instances in different Availability Zones within the same AWS Region. Specify a placement group with partition strategy when launching EC2 instances.
   • CDeploy an Auto Scaling group to launch EC2 instances in different Availability Zones based on a network utilization target.
   • DDeploy an Auto Scaling group with a step scaling policy to launch EC2 instances in different Availability Zones.

   Show answer

   Answer: A

   Explanation

   Reasons: • Launching instances within a single AZ and using a cluster placement group provides the lowest network latency and highest bandwidth between instances. This maximizes performance for an in-memory database and high-throughput application. • Communications between instances in the same AZ and placement group are free, minimizing data transfer charges. Inter-AZ and public IP traffic can incur charges. • A cluster placement group enables the instances to be placed close together within the AZ, allowing the high network throughput required. Partition groups span AZs, reducing bandwidth. • Auto Scaling across zones could launch instances in AZs that increase data transfer charges. It may reduce network throughput, impacting performance.

   Source: Adapted from community discussion — kruasan

   References

   • AWS documentation

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2. Question 252 · 1017 in bank

   A company that primarily runs its application servers on premises has decided to migrate to AWS. The company wants to minimize its need to scale its Internet Small Computer Systems Interface (iSCSI) storage on premises. The company wants only its recently accessed data to remain stored locally. Which AWS solution should the company use to meet these requirements?

   • AAmazon S3 File Gateway
   • BAWS Storage Gateway Tape Gateway
   • CAWS Storage Gateway Volume Gateway stored volumes
   • DAWS Storage Gateway Volume Gateway cached volumes

   Show answer

   Answer: D

   Explanation

   AWS Storage Gateway Volume Gateway provides two configurations for connecting to iSCSI storage, namely, stored volumes and cached volumes. The stored volume configuration stores the entire data set on-premises and asynchronously backs up the data to AWS. The cached volume configuration stores recently accessed data on-premises, and the remaining data is stored in Amazon S3. Since the company wants only its recently accessed data to remain stored locally, the cached volume configuration would be the most appropriate. It allows the company to keep frequently accessed data on-premises and reduce the need for scaling its iSCSI storage while still providing access to all data through the AWS cloud. This configuration also provides low-latency access to frequently accessed data and cost-effective off-site backups for less frequently accessed data.

   Source: Adapted from community discussion — LuckyAro

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3. Question 253 · 1017 in bank

   Select 2

   A company has multiple AWS accounts that use consolidated billing. The company runs several active high performance Amazon RDS for Oracle On-Demand DB instances for 90 days. The company’s finance team has access to AWS Trusted Advisor in the consolidated billing account and all other AWS accounts. The finance team needs to use the appropriate AWS account to access the Trusted Advisor check recommendations for RDS. The finance team must review the appropriate Trusted Advisor check to reduce RDS costs. Which combination of steps should the finance team take to meet these requirements? (Choose two.)

   • AUse the Trusted Advisor recommendations from the account where the RDS instances are running.
   • BUse the Trusted Advisor recommendations from the consolidated billing account to see all RDS instance checks at the same time.
   • CReview the Trusted Advisor check for Amazon RDS Reserved Instance Optimization.
   • DReview the Trusted Advisor check for Amazon RDS Idle DB Instances.
   • EReview the Trusted Advisor check for Amazon Redshift Reserved Node Optimization.

   Show answer

   Answer: BD

   Explanation

   B&C AWS Trusted Advisor is an online resource to help you reduce cost, increase performance, and improve security by optimizing your AWS environment. (...) Recommendations are based on the previous calendar month's hour-by-hour usage aggregated across all consolidated billing accounts. https://docs.aws.amazon.com/whitepapers/latest/cost-optimization-reservation-models/aws-trusted-advisor.html Amazon EC2 Reserved Instance Optimization: An important part of using AWS involves balancing your Reserved Instance (RI) purchase against your On-Demand Instance usage. This check provides recommendations on which RIs will help reduce the costs incurred from using On-Demand Instances. We create these recommendations by analyzing your On-Demand usage for the past 30 days. We then categorizing the usage into eligible categories for reservations. https://docs.aws.amazon.com/awssupport/latest/user/cost-optimization-checks.html#amazon-ec2-reserved-instances-optimization

   Source: Adapted from community discussion — dkw2342

   References

   • AWS documentation
   • AWS documentation
   • AWS documentation
   • AWS documentation

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4. Question 254 · 1017 in bank

   A solutions architect needs to optimize storage costs. The solutions architect must identify any Amazon S3 buckets that are no longer being accessed or are rarely accessed. Which solution will accomplish this goal with the LEAST operational overhead?

   • AAnalyze bucket access patterns by using the S3 Storage Lens dashboard for advanced activity metrics.
   • BAnalyze bucket access patterns by using the S3 dashboard in the AWS Management Console.
   • CTurn on the Amazon CloudWatch BucketSizeBytes metric for buckets. Analyze bucket access patterns by using the metrics data with Amazon Athena.
   • DTurn on AWS CloudTrail for S3 object monitoring. Analyze bucket access patterns by using CloudTrail logs that are integrated with Amazon CloudWatch Logs.

   Show answer

   Answer: A

   Explanation

   S3 Storage Lens is a fully managed S3 storage analytics solution that provides a comprehensive view of object storage usage, activity trends, and recommendations to optimize costs. Storage Lens allows you to analyze object access patterns across all of your S3 buckets and generate detailed metrics and reports.

   Source: Adapted from community discussion — kpato87

   References

   • AWS documentation

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5. Question 255 · 1017 in bank

   A company that hosts its web application on AWS wants to ensure all Amazon EC2 instances. Amazon RDS DB instances. and Amazon Redshift clusters are configured with tags. The company wants to minimize the effort of configuring and operating this check. What should a solutions architect do to accomplish this?

   • AUse AWS Config rules to define and detect resources that are not properly tagged.
   • BUse Cost Explorer to display resources that are not properly tagged. Tag those resources manually.
   • CWrite API calls to check all resources for proper tag allocation. Periodically run the code on an EC2 instance.
   • DWrite API calls to check all resources for proper tag allocation. Schedule an AWS Lambda function through Amazon CloudWatch to periodically run the code.

   Show answer

   Answer: A

   Explanation

   Answer from ChatGPT: Yes, you can use AWS Config to create tags for your resources. AWS Config is a service that enables you to assess, audit, and evaluate the configurations of your AWS resources. You can use AWS Config to create rules that automatically tag resources when they are created or when their configurations change. To create tags for your resources using AWS Config, you will need to create an AWS Config rule that specifies the tag key and value you want to use and the resources you want to apply the tag to. You can then enable the rule and AWS Config will automatically apply the tag to the specified resources when they are created or when their configurations change.

   Source: Adapted from community discussion — kurinei021

   References

   • AWS documentation
   • AWS documentation

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6. Question 256 · 1017 in bank

   A company sells datasets to customers who do research in artificial intelligence and machine learning (AI/ML). The datasets are large, formatted files that are stored in an Amazon S3 bucket in the us-east-1 Region. The company hosts a web application that the customers use to purchase access to a given dataset. The web application is deployed on multiple Amazon EC2 instances behind an Application Load Balancer. After a purchase is made, customers receive an S3 signed URL that allows access to the files. The customers are distributed across North America and Europe. The company wants to reduce the cost that is associated with data transfers and wants to maintain or improve performance. What should a solutions architect do to meet these requirements?

   • AConfigure S3 Transfer Acceleration on the existing S3 bucket. Direct customer requests to the S3 Transfer Acceleration endpoint. Continue to use S3 signed URLs for access control.
   • BDeploy an Amazon CloudFront distribution with the existing S3 bucket as the origin. Direct customer requests to the CloudFront URL. Switch to CloudFront signed URLs for access control.
   • CSet up a second S3 bucket in the eu-central-1 Region with S3 Cross-Region Replication between the buckets. Direct customer requests to the closest Region. Continue to use S3 signed URLs for access control.
   • DModify the web application to enable streaming of the datasets to end users. Configure the web application to read the data from the existing S3 bucket. Implement access control directly in the application.

   Show answer

   Answer: B

   Explanation

   To reduce the cost associated with data transfers and maintain or improve performance, a solutions architect should use Amazon CloudFront, a content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency and high transfer speeds. Deploying a CloudFront distribution with the existing S3 bucket as the origin will allow the company to serve the data to customers from edge locations that are closer to them, reducing data transfer costs and improving performance. Directing customer requests to the CloudFront URL and switching to CloudFront signed URLs for access control will enable customers to access the data securely and efficiently.

   Source: Adapted from community discussion — LuckyAro

   References

   • AWS documentation

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7. Question 257 · 1017 in bank

   A company is using AWS to design a web application that will process insurance quotes. Users will request quotes from the application. Quotes must be separated by quote type, must be responded to within 24 hours, and must not get lost. The solution must maximize operational efficiency and must minimize maintenance. Which solution meets these requirements?

   • ACreate multiple Amazon Kinesis data streams based on the quote type. Configure the web application to send messages to the proper data stream. Configure each backend group of application servers to use the Kinesis Client Library (KCL) to pool messages from its own data stream.
   • BCreate an AWS Lambda function and an Amazon Simple Notification Service (Amazon SNS) topic for each quote type. Subscribe the Lambda function to its associated SNS topic. Configure the application to publish requests for quotes to the appropriate SNS topic.
   • CCreate a single Amazon Simple Notification Service (Amazon SNS) topic. Subscribe Amazon Simple Queue Service (Amazon SQS) queues to the SNS topic. Configure SNS message filtering to publish messages to the proper SQS queue based on the quote type. Configure each backend application server to use its own SQS queue.
   • DCreate multiple Amazon Kinesis Data Firehose delivery streams based on the quote type to deliver data streams to an Amazon OpenSearch Service cluster. Configure the application to send messages to the proper delivery stream. Configure each backend group of application servers to search for the messages from OpenSearch Service and process them accordingly.

   Show answer

   Answer: C

   Explanation

   Quote types need to be separated: SNS message filtering can be used to publish messages to the appropriate SQS queue based on the quote type, ensuring that quotes are separated by type. Quotes must be responded to within 24 hours and must not get lost: SQS provides reliable and scalable queuing for messages, ensuring that quotes will not get lost and can be processed in a timely manner. Additionally, each backend application server can use its own SQS queue, ensuring that quotes are processed efficiently without any delay. Operational efficiency and minimizing maintenance: Using a single SNS topic and multiple SQS queues is a scalable and cost-effective approach, which can help to maximize operational efficiency and minimize maintenance. Additionally, SNS and SQS are fully managed services, which means that the company will not need to worry about maintenance tasks such as software updates, hardware upgrades, or scaling the infrastructure.

   Source: Adapted from community discussion — LuckyAro

   References

   • AWS documentation
   • AWS documentation

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8. Question 258 · 1017 in bank

   A company has an application that runs on several Amazon EC2 instances. Each EC2 instance has multiple Amazon Elastic Block Store (Amazon EBS) data volumes attached to it. The application’s EC2 instance configuration and data need to be backed up nightly. The application also needs to be recoverable in a different AWS Region. Which solution will meet these requirements in the MOST operationally efficient way?

   • AWrite an AWS Lambda function that schedules nightly snapshots of the application’s EBS volumes and copies the snapshots to a different Region.
   • BCreate a backup plan by using AWS Backup to perform nightly backups. Copy the backups to another Region. Add the application’s EC2 instances as resources.
   • CCreate a backup plan by using AWS Backup to perform nightly backups. Copy the backups to another Region. Add the application’s EBS volumes as resources.
   • DWrite an AWS Lambda function that schedules nightly snapshots of the application's EBS volumes and copies the snapshots to a different Availability Zone.

   Show answer

   Answer: B

   Explanation

   B is answer so the requirement is "The application’s EC2 instance configuration and data need to be backed up nightly" so we need "add the application’s EC2 instances as resources". This option will backup both EC2 configuration and data

   Source: Adapted from community discussion — khasport

   References

   • AWS documentation
   • AWS documentation
   • AWS documentation

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9. Question 259 · 1017 in bank

   A company is building a mobile app on AWS. The company wants to expand its reach to millions of users. The company needs to build a platform so that authorized users can watch the company’s content on their mobile devices. What should a solutions architect recommend to meet these requirements?

   • APublish content to a public Amazon S3 bucket. Use AWS Key Management Service (AWS KMS) keys to stream content.
   • BSet up IPsec VPN between the mobile app and the AWS environment to stream content.
   • CUse Amazon CloudFront. Provide signed URLs to stream content.
   • DSet up AWS Client VPN between the mobile app and the AWS environment to stream content.

   Show answer

   Answer: C

   Explanation

   Amazon CloudFront is a content delivery network (CDN) that securely delivers data, videos, applications, and APIs to customers globally with low latency and high transfer speeds. CloudFront supports signed URLs that provide authorized access to your content. This feature allows the company to control who can access their content and for how long, providing a secure and scalable solution for millions of users.

   Source: Adapted from community discussion — LuckyAro

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10. Question 260 · 1017 in bank

    A company has an on-premises MySQL database used by the global sales team with infrequent access patterns. The sales team requires the database to have minimal downtime. A database administrator wants to migrate this database to AWS without selecting a particular instance type in anticipation of more users in the future. Which service should a solutions architect recommend?

    • AAmazon Aurora MySQL
    • BAmazon Aurora Serverless for MySQL
    • CAmazon Redshift Spectrum
    • DAmazon RDS for MySQL

    Show answer

    Answer: B

    Explanation

    With Aurora Serverless for MySQL, you don't need to select a particular instance type, as the service automatically scales up or down based on the application's needs.

    Source: Adapted from community discussion — elearningtakai

    References

    • AWS documentation

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SAA-C03 practice, question 251. 1017 questions available.