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A company needs to ingest and analyze telemetry data from vehicles at scale for machine learning and reporting.
Which solution will meet these requirements?
Answer : A
Amazon Timestream is purpose-built for storing and analyzing time-series data like telemetry.
Option A leverages Timestream, SageMaker for ML, and QuickSight for visualization, meeting all requirements with minimal complexity.
Option B involves more complex DynamoDB-EMR integration.
Option C uses Neptune, which is designed for graph databases, not telemetry data.
Option D incorrectly uses Athena for visualization instead of QuickSight.
A company runs an application on EC2 instances that need access to RDS credentials stored in AWS Secrets Manager.
Which solution meets this requirement?
Answer : A
Option A uses an IAM role attached to the EC2 instance profile, enabling secure and automated access to Secrets Manager. This is the recommended approach.
Option B uses IAM users, which is less secure and harder to manage.
Option C is not practical for accessing secrets programmatically.
Option D violates best practices by granting direct access to the EC2 instance.
A company needs a cloud-based solution for backup, recovery, and archiving while retaining encryption key material control.
Which combination of solutions will meet these requirements? (Select TWO)
Answer : A, D
Option A allows importing your own encryption keys into AWS KMS, ensuring control over key material.
Option D uses S3 Glacier with SSE-C, where the customer controls the encryption keys, meeting compliance needs.
Option B uses AWS-managed key material, violating the requirement for key material control.
Option C and E are not fully compliant with the control requirement.
A website uses EC2 instances with Auto Scaling and EFS. How can the company optimize costs?
Answer : C
Option C ensures dynamic scaling based on demand using a target tracking scaling policy, optimizing costs.
Option A results in over-provisioning, leading to higher costs.
Option B increases costs by using larger instances.
Option D is not feasible as instance store volumes are ephemeral and unsuitable for shared storage like EFS.
A company is developing a social media application that must scale to meet demand spikes and handle ordered processes.
Which AWS services meet these requirements?
Answer : A
Option A combines ECS with Fargate for scalability, RDS for relational data, and SQS for decoupling with message ordering (FIFO queues).
Option B uses SNS, which does not maintain message order.
Option C is suitable for serverless workflows but not relational data.
Option D relies on Elastic Beanstalk, which offers less flexibility for scaling.
