Question 1

A pharma company is working on developing a vaccine for the COVID-19 virus. The researchers at the company want to process the reference healthcare data in a highly available as well as HIPAA compliant in-memory database that supports caching results of SQL queries.As a solutions architect, which of the following AWS services would you recommend for this task?

Options :

A : Amazon DocumentDB

B : Amazon DynamoDB Accelerator (DAX)

C : Amazon ElastiCache for Redis/Memcached

D : Amazon DynamoDB

Answer: C

Question 2

A financial company instructed you to automate the recurring tasks in your department such as patch management, infrastructure selection, and data synchronization to improve their current processes. You need to have a service which can coordinate multiple AWS services into serverless workflows.

Which of the following is the most cost-effective service to use in this scenario?

Options :

A :

SWF

B : AWS Batch

C : AWS Step Functions

D : AWS Lambda

Answer: C

Question 3

A company collects data from thousands of remote devices by using a RESTful web services application that runs on an Amazon EC2 instance. The EC2 instance receives the raw data, transforms the raw data, and stores all the data in an Amazon S3 bucket. The number of remote devices will increase into the millions soon. The company needs a highly scalable solution that minimizes operational overhead.

Which combination of steps should a solutions architect take to meet these requirements9 (Select TWO.)

Options :

A : Use AWS Glue to process the raw data in Amazon S3.

B : Use Amazon Route 53 to route traffic to different EC2 instances.

C : Add more EC2 instances to accommodate the increasing amount of incoming data.

D : Send the raw data to Amazon Simple Queue Service (Amazon SOS). Use EC2 instances to process the data.

E : Use Amazon API Gateway to send the raw data to an Amazon Kinesis data stream. Configure Amazon Kinesis Data Firehose to use the data stream as a source to deliver the data to Amazon S3.

Answer: A,E

Question 4

A company is using AWS DataSync to migrate millions of files from an on-premises system to AWS. The files are 10 KB in size on average.The company wants to use Amazon S3 for file storage. For the first year after the migration, the files will be accessed once or twice and must be immediately available. After 1 year, the files must be archived for at least 7 years.Which solution will meet these requirements MOST cost-effectively?

Options :

A : Use an archive tool to group the files into large objects. Use DataSync to migrate the objects. Store the objects in S3 Glacier Instant Retrieval for the first year. Use a lifecycle configuration to transition the files to S3 Glacier Deep Archive after 1 year with a retention period of 7 years.

B : Use an archive tool to group the files into large objects. Use DataSync to copy the objects to S3 Standard-Infrequent Access (S3 Standard-IA). Use a lifecycle configuration to transition the files to S3 Glacier Instant Retrieval after 1 year with a retention period of 7 years.

C : Configure the destination storage class for the files as S3 Glacier Instant Retrieval. Use a lifecycle policy to transition the files to S3 Glacier Flexible Retrieval after 1 year with a retention period of 7 years.

D : Configure a DataSync task to transfer the files to S3 Standard-Infrequent Access (S3 Standard-IA). Use a lifecycle configuration to transition the files to S3 Deep Archive after 1 year with a retention period of 7 years.

Answer: A

Question 5

A company hosts a serverless application on AWS. The application uses Amazon API Gateway, AWS Lambda, and an Amazon RDS for PostgreSQL database. The company notices an increase in application errors that result from database connection timeouts during times Of peak traffic or unpredictable traffic. The company needs a solution that reduces the application failures with the least amount of change to the code.

What should a solutions architect do to meet these requirements?

Options :

A : Reduce the Lambda concurrency rate.

B : Enable RDS Proxy on the RDS DB instance.

C : Resize the RDS DB instance class to accept more connections.

D : Migrate the database to Amazon DynamoDB with on-demand scaling.

Answer: B

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