- (Exam Topic 3)
A company’s reporting system delivers hundreds of .csv files to an Amazon S3 bucket each day. The company must convert these files to Apache Parquet format and must store the files in a transformed data bucket.
Which solution will meet these requirements with the LEAST development effort?

1. A. Create an Amazon EMR cluster with Apache Spark installe
2. B. Write a Spark application to transform the dat
3. C. Use EMR File System (EMRFS) to write files to the transformed data bucket.
4. D. Create an AWS Glue crawler to discover the dat
5. E. Create an AWS Glue extract, transform, and load (ETL) job to transform the dat
6. F. Specify the transformed data bucket in the output step.
7. G. Use AWS Batch to create a job definition with Bash syntax to transform the data and output the data to the transformed data bucke
8. H. Use the job definition to submit a jo
9. I. Specify an array job as the job type.
10. J. Create an AWS Lambda function to transform the data and output the data to the transformed data bucke
11. K. Configure an event notification for the S3 bucke
12. L. Specify the Lambda function as the destination for the event notification.

Correct Answer: B
https://docs.aws.amazon.com/prescriptive-guidance/latest/patterns/three-aws-glue-etl-job-types-for-converting-d

- (Exam Topic 3)
A company is building a new web-based customer relationship management application. The application will use several Amazon EC2 instances that are backed by Amazon Elastic Block Store (Amazon EBS) volumes behind an Application Load Balancer (ALB). The application will also use an Amazon Aurora database. All data for the application must be encrypted at rest and in transit.
Which solution will meet these requirements?

1. A. Use AWS Key Management Service (AWS KMS) certificates on the ALB to encrypt data in transi
2. B. Use AWS Certificate Manager (ACM) to encrypt the EBS volumes and Aurora database storage at rest.
3. C. Use the AWS root account to log in to the AWS Management Consol
4. D. Upload the company’s encryption certificate
5. E. While in the root account, select the option to turn on encryption for all data at rest and in transit for the account.
6. F. Use a AWS Key Management Service (AWS KMS) to encrypt the EBS volumes and Aurora database storage at res
7. G. Attach an AWS Certificate Manager (ACM) certificate to the ALB to encrypt data in transit.
8. H. Use BitLocker to encrypt all data at res
9. I. Import the company’s TLS certificate keys to AWS key Management Service (AWS KMS). Attach the KMS keys to the ALB to encrypt data in transit.

Correct Answer: C

- (Exam Topic 3)
The customers of a finance company request appointments with financial advisors by sending text messages. A web application that runs on Amazon EC2 instances accepts the appointment requests. The text messages are published to an Amazon Simple Queue Service (Amazon SQS) queue through the web application. Another application that runs on EC2 instances then sends meeting invitations and meeting confirmation email messages to the customers. After successful scheduling, this application stores the meeting information in an Amazon DynamoDB database.
As the company expands, customers report that their meeting invitations are taking longer to arrive. What should a solutions architect recommend to resolve this issue?

1. A. Add a DynamoDB Accelerator (DAX) cluster in front of the DynamoDB database.
2. B. Add an Amazon API Gateway API in front of the web application that accepts the appointment requests.
3. C. Add an Amazon CloudFront distributio
4. D. Set the origin as the web application that accepts the appointment requests.
5. E. Add an Auto Scaling group for the application that sends meeting invitation
6. F. Configure the Auto Scaling group to scale based on the depth of the SQS queue.

Correct Answer: D
To resolve the issue of longer delivery times for meeting invitations, the solutions architect can recommend adding an Auto Scaling group for the application that sends meeting invitations and configuring the Auto Scaling group to scale based on the depth of the SQS queue. This will allow the application to scale up as the number of appointment requests increases, improving the performance and delivery times of the meeting invitations.

- (Exam Topic 3)
A company wants to migrate an Oracle database to AWS. The database consists of a single table that contains millions of geographic information systems (GIS) images that are high resolution and are identified by a geographic code.
When a natural disaster occurs tens of thousands of images get updated every few minutes. Each geographic code has a single image or row that is associated with it. The company wants a solution that is highly available and scalable during such events
Which solution meets these requirements MOST cost-effectively?

1. A. Store the images and geographic codes in a database table Use Oracle running on an Amazon RDS Multi-AZ DB instance
2. B. Store the images in Amazon S3 buckets Use Amazon DynamoDB with the geographic code as the key and the image S3 URL as the value
3. C. Store the images and geographic codes in an Amazon DynamoDB table Configure DynamoDB Accelerator (DAX) during times of high load
4. D. Store the images in Amazon S3 buckets Store geographic codes and image S3 URLs in a database table Use Oracle running on an Amazon RDS Multi-AZ DB instance.

Correct Answer: A

- (Exam Topic 2)
A company is migrating an application from on-premises servers to Amazon EC2 instances. As part of the migration design requirements, a solutions architect must implement infrastructure metric alarms. The company does not need to take action if CPU utilization increases to more than 50% for a short burst of time. However, if the CPU utilization increases to more than 50% and read IOPS on the disk are high at the same time, the company needs to act as soon as possible. The solutions architect also must reduce false alarms.
What should the solutions architect do to meet these requirements?

1. A. Create Amazon CloudWatch composite alarms where possible.
2. B. Create Amazon CloudWatch dashboards to visualize the metrics and react to issues quickly.
3. C. Create Amazon CloudWatch Synthetics canaries to monitor the application and raise an alarm.
4. D. Create single Amazon CloudWatch metric alarms with multiple metric thresholds where possible.

Correct Answer: A