1. A data science team requires storage for nightly log processing. The size and number of logs is unknown and will persist for 24 hours only.What is the MOST cost-effective solution?

A) Amazon S3 Glacier
B) Amazon S3 Standard
C) Amazon S3 Intelligent-Tiering
D) Amazon S3 One Zone-Infrequent Access (S3 One Zone-IA)



2. A company is hosting a web application on AWS using a single Amazon EC2 instance that stores user-uploaded documents in an Amazon EBS volume. For better scalability and availability, the company duplicated the architecture and created a second EC2 instance and EBS volume in another Availability Zone, placing both behind an Application Load Balancer. After completing this change, users reported that, each time they refreshed the website, they could see one subset of their documents or the other, but never all of the documents at the same time.What should a solutions architect propose to ensure users see all of their documents at once?

A) Copy the data so both EBS volumes contain all the documents.
B) Configure the Application Load Balancer to direct a user to the server with the documents.
C) Copy the data from both EBS volumes to Amazon EFS. Modify the application to save new documents to Amazon EFS.
D) Configure the Application Load Balancer to send the request to both servers. Return each document from the correct server.



3. A manufacturing company wants to implement predictive maintenance on its machinery equipment. The company will install thousands of IoT sensors that will send data to AWS in real time. A solution architect is tasked with implementing a solution that will receive events in an ordered manner for each machinery asset and ensure that data is saved for further processing at a late time.Which solution would be MOST efficient?

A) Use Amazon Kinesis Data Streams for real-time events with a partition for each equipment asset. Use Amazon Kinesis Data Firehose to save data to Amazon S3
B) Use Amazon Kinesis Data Streams for real-time events with a shard for each equipment asset. Use Amazon Kinesis Data Firehose to save data to Amazon EBS
C) Use an Amazon SQS standard queue for real-time events with one queue for each equipment asset. Trigger an AWS Lambda function from the SQS queue to save data to Amazon S3
D) Use an Amazon SQS FIFO queue for real-time events with one queue for each equipment asset. Trigger an AWS Lambda function for the SQS queue to save data to Amazon EFS



4. A company has on-premises servers running a relational database. The current database servers high read traffic for users in different locations. The company wants to migrate to AWS with the least amount of effort. The database solution should support disaster recovery and not affect the company's current traffic flow.Which solution meets these requirements?

A) Use databases hosted on Amazon EC2 instances behind an Application Load Balancer in different Availability Zones.
B) Use databases hosted on multiple Amazon EC2 instances in different AWS Regions.
C) Use a database in Amazon RDS with Multi-AZ and at least one standby replica.
D) Use a database in Amazon RDS with Multi-AZ and at least one read replica.



5. A company is planning to use Amazon S3 to store images uploaded by its users. The images must be encrypted at rest in Amazon S3. The company does not want to spend time managing and rotating the keys, but it does want to control who can access those keys.What should a solutions architect use to accomplish this?

A) Server-Side Encryption with keys stored in an S3 bucket
B) Server-Side Encryption with Amazon S3-Managed Keys (SSE-S3)
C) Server-Side Encryption with Customer-Provided Keys (SSE-C)
D) Server-Side Encryption with AWS KMS-Managed Keys (SSE-KMS)