Amazon Amazon Certifications SAA-C03 Questions & Answers

• Question 791:

  A company hosts a three-tier web application that includes a PostgreSQL database The database stores the metadata from documents The company searches the metadata for key terms to retrieve documents that the company reviews in a report each month The documents are stored in Amazon S3 The documents are usually written only once, but they are updated frequency The reporting process takes a few hours with the use of relational queries The reporting process must not affect any document modifications or the addition of new documents.

  What are the MOST operationally efficient solutions that meet these requirements? (Select TWO )

  A. Set up a new Amazon DocumentDB (with MongoDB compatibility) cluster that includes a read replica Scale the read replica to generate the reports.

  B. Set up a new Amazon RDS for PostgreSQL Reserved Instance and an On-Demand read replica Scale the read replica to generate the reports

  C. Set up a new Amazon Aurora PostgreSQL DB cluster that includes a Reserved Instance and an Aurora Replica issue queries to the Aurora Replica to generate the reports.

  D. Set up a new Amazon RDS for PostgreSQL Multi-AZ Reserved Instance Configure the reporting module to query the secondary RDS node so that the reporting module does not affect the primary node

  E. Set up a new Amazon DynamoDB table to store the documents Use a fixed write capacity to support new document entries Automatically scale the read capacity to support the reports

  Correct Answer: BC

• Question 792:

  A company has deployed a Java Spring Boot application as a pod that runs on Amazon Elastic Kubernetes Service (Amazon EKS) in private subnets. The application needs to write data to an Amazon DynamoDB table. A solutions architect must ensure that the application can interact with the DynamoDB table without exposing traffic to the internet.

  Which combination of steps should the solutions architect take to accomplish this goal? (Choose two.)

  A. Attach an IAM role that has sufficient privileges to the EKS pod.

  B. Attach an IAM user that has sufficient privileges to the EKS pod.

  C. Allow outbound connectivity to the DynamoDB table through the private subnets' network ACLs.

  D. Create a VPC endpoint for DynamoDB.

  E. Embed the access keys in the Java Spring Boot code.

  Correct Answer: AD

  https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/vpc-endpoints-dynamodb.html https://aws.amazon.com/about-aws/whats-new/2019/09/amazon-eks-adds-support-to-assign-iam-permissions-to-kubernetes-service-accounts/

• Question 793:

  A company is using Amazon CloudFront with this website. The company has enabled logging on the CloudFront distribution, and logs are saved in one of the company's Amazon S3 buckets The company needs to perform advanced analyses on the logs and build visualizations

  What should a solutions architect do to meet these requirements'?

  A. Use standard SQL queries in Amazon Athena to analyze the CloudFront togs in the S3 bucket Visualize the results with AWS Glue

  B. Use standard SQL queries in Amazon Athena to analyze the CloudFront togs in the S3 bucket Visualize the results with Amazon QuickSight

  C. Use standard SQL queries in Amazon DynamoDB to analyze the CloudFront logs m the S3 bucket Visualize the results with AWS Glue

  D. Use standard SQL queries in Amazon DynamoDB to analyze the CtoudFront logs m the S3 bucket Visualize the results with Amazon QuickSight

  Correct Answer: B

  Amazon Athena can be used to analyze data in S3 buckets using standard SQL queries without requiring any data transformation. By using Athena, a solutions architect can easily and efficiently query the CloudFront logs stored in the S3 bucket. The results of the queries can be visualized using Amazon QuickSight, which provides powerful data visualization capabilities and easy-to-use dashboards. Together, Athena and QuickSight provide a cost-effective and scalable solution to analyze CloudFront logs and build visualizations.

• Question 794:

  A company provides an API to its users that automates inquiries for tax computations based on item prices. The company experiences a larger number of inquiries during the holiday season only that cause slower response times. A solutions architect needs to design a solution that is scalable and elastic.

  What should the solutions architect do to accomplish this?

  A. Provide an API hosted on an Amazon EC2 instance. The EC2 instance performs the required computations when the API request is made.

  B. Design a REST API using Amazon API Gateway that accepts the item names. API Gateway passes item names to AWS Lambda for tax computations.

  C. Create an Application Load Balancer that has two Amazon EC2 instances behind it. The EC2 instances will compute the tax on the received item names.

  D. Design a REST API using Amazon API Gateway that connects with an API hosted on an Amazon EC2 instance. API Gateway accepts and passes the item names to the EC2 instance for tax computations.

  Correct Answer: B

  Lambda server-less is scalable and elastic than EC2 api gateway solution

• Question 795:

  A company has an application that is backed ny an Amazon DynamoDB table. The company's compliance requirements specify that database backups must be taken every month, must be available for 6 months, and must be retained for 7

  years.

  Which solution will meet these requirements?

  A. Create an AWS Backup plan to back up the DynamoDB table on the first day of each month. Specify a lifecycle policy that transitions the backup to cold storage after 6 months. Set the retention period for each backup to 7 years.

  B. Create a DynamoDB on-damand backup of the DynamoDB table on the first day of each month Transition the backup to Amazon S3 Glacier Flexible Retrieval after 6 months. Create an S3 Lifecycle policy to delete backups that are older than 7 years.

  C. Use the AWS SDK to develop a script that creates an on-demand backup of the DynamoDB table. Set up an Amzon EvenlBridge rule that runs the script on the first day of each month. Create a second script that will run on the second day of each month to transition DynamoDB backups that are older than 6 months to cold storage and to delete backups that are older than 7 years.

  D. Use the AWS CLI to create an on-demand backup of the DynamoDB table Set up an Amazon EventBridge rule that runs the command on the first day of each month with a cron expression Specify in the command to transition the backups to cold storage after 6 months and to delete the backups after 7 years.

  Correct Answer: A

  This solution satisfies the requirements in the following ways:

  1.

  AWS Backup will automatically take full backups of the DynamoDB table on the schedule defined in the backup plan (the first of each month).

  2.

  The lifecycle policy can transition backups to cold storage after 6 months, meeting that requirement.

  3.

  Setting a 7-year retention period in the backup plan will ensure each backup is retained for 7 years as required.

  4.

  AWS Backup manages the backup jobs and lifecycle policies, requiring no custom scripting or management.

• Question 796:

  An online learning company is migrating to the AWS Cloud. The company maintains its student records in a PostgreSQL database. The company needs a solution in which its data is available and online across multiple AWS Regions at all times.

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

  A. Migrate the PostgreSQL database to a PostgreSQL cluster on Amazon EC2 instances.

  B. Migrate the PostgreSQL database to an Amazon RDS for PostgreSQL DB instance with the Multi-AZ feature turned on.

  C. Migrate the PostgreSQL database to an Amazon RDS for PostgreSQL DB instance. Create a read replica in another Region.

  D. Migrate the PostgreSQL database to an Amazon RDS for PostgreSQL DB instance. Set up DB snapshots to be copied to another Region.

  Correct Answer: C

  "online across multiple AWS Regions at all times". Currently only Read Replica supports cross-regions , Multi-AZ does not support cross-region (it works only in same region) https://aws.amazon.com/about-aws/whats-new/2018/01/amazonrds-read-replicas-now-support-multi-az-deployments/

• Question 797:

  A company manages its own Amazon EC2 instances that run MySQL databases. The company is manually managing replication and scaling as demand increases or decreases. The company needs a new solution that simplifies the process of adding or removing compute capacity to or from its database tier as needed. The solution also must offer improved performance, scaling, and durability with minimal effort from operations.

  Which solution meets these requirements?

  A. Migrate the databases to Amazon Aurora Serverless for Aurora MySQL.

  B. Migrate the databases to Amazon Aurora Serverless for Aurora PostgreSQL.

  C. Combine the databases into one larger MySQL database. Run the larger database on larger EC2 instances.

  D. Create an EC2 Auto Scaling group for the database tier. Migrate the existing databases to the new environment.

  Correct Answer: A

  https://aws.amazon.com/rds/aurora/serverless/

• Question 798:

  A company is building a solution that will report Amazon EC2 Auto Scaling events across all the applications in an AWS account. The company needs to use a serverless solution to store the EC2 Auto Scaling status data in Amazon S3. The company then will use the data in Amazon S3 to provide near-real-time updates in a dashboard. The solution must not affect the speed of EC2 instance launches.

  How should the company move the data to Amazon S3 to meet these requirements?

  A. Use an Amazon CloudWatch metric stream to send the EC2 Auto Scaling status data to Amazon Kinesis Data Firehose. Store the data in Amazon S3.

  B. Launch an Amazon EMR cluster to collect the EC2 Auto Scaling status data and send the data to Amazon Kinesis Data Firehose. Store the data in Amazon S3.

  C. Create an Amazon EventBridge rule to invoke an AWS Lambda function on a schedule. Configure the Lambda function to send the EC2 Auto Scaling status data directly to Amazon S3.

  D. Use a bootstrap script during the launch of an EC2 instance to install Amazon Kinesis Agent. Configure Kinesis Agent to collect the EC2 Auto Scaling status data and send the data to Amazon Kinesis Data Firehose. Store the data in Amazon S3.

  Correct Answer: A

  You can use metric streams to continually stream CloudWatch metrics to a destination of your choice, with near-real-time delivery and low latency. One of the use cases is Data Lake: create a metric stream and direct it to an Amazon Kinesis Data Firehose delivery stream that delivers your CloudWatch metrics to a data lake such as Amazon S3.

  https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Metric-Streams.html

• Question 799:

  A company is using a fleet of Amazon EC2 instances to ingest data from on-premises data sources. The data is in JSON format and Ingestion rates can be as high as 1 MB/s. When an EC2 instance is rebooted, the data in-flight is lost. The company's data science team wants to query Ingested data In near-real time.

  Which solution provides near-real-time data querying that is scalable with minimal data loss?

  A. Publish data to Amazon Kinesis Data Streams Use Kinesis data Analytics to query the data.

  B. Publish data to Amazon Kinesis Data Firehose with Amazon Redshift as the destination Use Amazon Redshift to query the data

  C. Store ingested data m an EC2 Instance store Publish data to Amazon Kinesis Data Firehose with Amazon S3 as the destination. Use Amazon Athena to query the data.

  D. Store ingested data m an Amazon Elastic Block Store (Amazon EBS) volume Publish data to Amazon ElastiCache tor Red Subscribe to the Redis channel to query the data

  Correct Answer: A

  Publishing data to Amazon Kinesis Data Streams can support ingestion rates as high as 1 MB/s and provide real-time data processing. Kinesis Data Analytics can query the ingested data in real-time with low latency, and the solution can scale as needed to accommodate increases in ingestion rates or querying needs. This solution also ensures minimal data loss in the event of an EC2 instance reboot since Kinesis Data Streams has a persistent data store for up to 7 days by default.

• Question 800:

  A company needs a backup strategy for its three-tier stateless web application The web application runs on Amazon EC2 instances in an Auto Scaling group with a dynamic scaling policy that is configured to respond to scaling events The database tier runs on Amazon RDS for PostgreSQL The web application does not require temporary local storage on the EC2 instances The company's recovery point objective (RPO) is 2 hours

  The backup strategy must maximize scalability and optimize resource utilization for this environment

  Which solution will meet these requirements?

  A. Take snapshots of Amazon Elastic Block Store (Amazon EBS) volumes of the EC2 instances and database every 2 hours to meet the RPO

  B. Configure a snapshot lifecycle policy to take Amazon Elastic Block Store (Amazon EBS) snapshots Enable automated backups in Amazon RDS to meet the RPO

  C. Retain the latest Amazon Machine Images (AMIs) of the web and application tiers Enable automated backups in Amazon RDS and use point-in-time recovery to meet the RPO

  D. Take snapshots of Amazon Elastic Block Store (Amazon EBS) volumes of the EC2 instances every 2 hours Enable automated backups in Amazon RDS and use point-in-time recovery to meet the RPO

  Correct Answer: C

  Since the application has no local data on instances, AMIs alone can meet the RPO by restoring instances from the most recent AMI backup. When combined with automated RDS backups for the database, this provides a complete backup

  solution for this environment.

  The other options involving EBS snapshots would be unnecessary given the stateless nature of the instances. AMIs provide all the backup needed for the app tier.

  This uses native, automated AWS backup features that require minimal ongoing management:

  1.

  AMI automated backups provide point-in-time recovery for the stateless app tier.

  2.

  RDS automated backups provide point-in-time recovery for the database.