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Amazon AWS Certified Developer - Associate Sample Questions (Q210-Q215):

NEW QUESTION # 210
A company is creating a new application that gives users the ability to upload and share short video files. The average size of the video files is 10 MB. After a user uploads a file, a message needs to be placed into an Amazon Simple Queue Service (Amazon SQS) queue so the file can be processed. The files need to be accessible for processing within 5 minutes.
Which solution will meet these requirements MOST cost-effectively?

A. Write the files to Amazon S3 Standard. Add the S3 location of the files to the SQS queue.
B. Write the files to an Amazon Elastic Block Store (Amazon EBS) General Purpose SSD volume. Add the EBS location of the files to the SQS queue.
C. Write messages that contain the contents of the uploaded files to the SQS queue.
D. Write the files to Amazon S3 Glacier Deep Archive. Add the S3 location of the files to the SQS queue.

Answer: A

Explanation:
Comprehensive Detailed Explanation with all AWS Reference
Why Option B is Correct:
Amazon S3 Standard provides immediate access to files and is cost-effective for files that need to be accessed within 5 minutes.
By adding the S3 location to the SQS queue, you avoid transferring large files directly, which is both more efficient and scalable.
Why Other Options are Incorrect:
Option A: S3 Glacier Deep Archive is designed for archival storage with retrieval times ranging from minutes to hours, which does not meet the 5-minute requirement.
Option C: Amazon EBS is designed for block storage attached to EC2 instances, which adds unnecessary complexity and cost.
Option D: SQS is not designed to handle large file content directly and has message size limits (256 KB).
AWS Documentation Reference:
Amazon S3 Overview
Amazon SQS Best Practices

NEW QUESTION # 211
A developer is storing sensitive data generated by an application in Amazon S3. The developer wants to encrypt the data at rest. A company policy requires an audit trail of when the AWS Key Management Service (AWS KMS) key was used and by whom.
Which encryption option will meet these requirements?

A. Server-side encryption with Amazon S3 managed keys (SSE-S3)
B. Server-side encryption with self-managed keys
C. Server-side encryption with AWS KMS managed keys (SSE-KMS}
D. Server-side encryption with customer-provided keys (SSE-C)

Answer: C

Explanation:
Explanation
This solution meets the requirements because it encrypts data at rest using AWS KMS keys and provides an audit trail of when and by whom they were used. Server-side encryption with AWS KMS managed keys (SSE-KMS) is a feature of Amazon S3 that encrypts data using keys that are managed by AWS KMS. When SSE-KMS is enabled for an S3 bucket or object, S3 requests AWS KMS to generate data keys and encrypts data using these keys. AWS KMS logs every use of its keys in AWS CloudTrail, which records all API calls to AWS KMS as events. These events include information such as who made the request, when it was made, and which key was used. The company policy can use CloudTrail logs to audit critical events related to their data encryption and access. Server-side encryption with Amazon S3 managed keys (SSE-S3) also encrypts data at rest using keys that are managed by S3, but does not provide an audit trail of key usage. Server-side encryption with customer-provided keys (SSE-C) and server-side encryption with self-managed keys also encrypt data at rest using keys that are provided or managed by customers, but do not provide an audit trail of key usage and require additional overhead for key management.

NEW QUESTION # 212
A company has an Amazon S3 bucket containing premier content that it intends to make available to only paid subscribers of its website. The S3 bucket currently has default permissions of all objects being private to prevent inadvertent exposure of the premier content to non-paying website visitors.
How can the company limit the ability to download a premier content file in the S3 bucket to paid subscribers only?

A. Enable server-side encryption on the S3 bucket for data protection against the non-paying website visitors.
B. Generate a pre-signed object URL for the premier content file when a paid subscriber requests a download.
C. Add a bucket policy that requires multi-factor authentication for requests to access the S3 bucket objects.
D. Apply a bucket policy that allows anonymous users to download the content from the S3 bucket.

Answer: B

Explanation:
By generating a pre-signed object URL for the main content file when a paid subscriber requests a download, the company can control who can download the file. The pre-signed object URL will be valid for a limited period of time and can only be used by the paid subscriber who requested the download.

NEW QUESTION # 213
Users are reporting errors in an application. The application consists of several micro services that are deployed on Amazon Elastic Container Serves (Amazon ECS) with AWS Fargate.
When combination of steps should a developer take to fix the errors? (Select TWO)

A. Instrument the application by using the AWS X-Ray SDK. Update the application to communicate with the X-Ray daemon.
B. Deploy AWS X-Ray as a daemon set to the Fargate cluster. Update the service role policy to allow access to the X-Ray API.
C. Instrument the ECS task to send the stout and spider- output to Amazon CloudWatch Logs. Update the task role policy to allow the cloudwatch Putlogs action.
D. Deploy AWS X-Ray as a sidecar container to the micro services. Update the task role policy to allow access to me X -Ray API.
E. Instrument the application by using the AWS X-Ray SDK. Update the application to use the Put-XrayTrace API call to communicate with the X-Ray API.

Answer: C,D

Explanation:
Explanation
The combination of steps that the developer should take to fix the errors is to deploy AWS X-Ray as a sidecar container to the microservices and instrument the ECS task to send the stdout and stderr output to Amazon CloudWatch Logs. This way, the developer can use AWS X-Ray to analyze and debug the performance of the microservices and identify any issues or bottlenecks. The developer can also use CloudWatch Logs to monitor and troubleshoot the logs from the ECS task and detect any errors or exceptions. The other options either involve using AWS X-Ray as a daemon set, which is not supported by Fargate, or using the PutTraceSegments API call, which is not necessary when using a sidecar container.

NEW QUESTION # 214
A company notices that credentials that the company uses to connect to an external software as a service (SaaS) vendor are stored in a configuration file as plaintext.
The developer needs to secure the API credentials and enforce automatic credentials rotation on a quarterly basis.
Which solution will meet these requirements MOST securely?

A. Store the credentials in AWS Systems Manager Parameter Store and enable rotation. Retrieve the credentials when users make API calls to the SaaS vendor.
B. Store the credentials in AWS Secrets Manager and enable rotation. Configure the API to have Secrets Manager access.
C. Retrieve temporary credentials from AWS Security Token Service (AWS STS) every 15 minutes.
Use the temporary credentials when users make API calls to the SaaS vendor.
D. Use AWS Key Management Service (AWS KMS) to encrypt the configuration file. Decrypt the configuration file when users make API calls to the SaaS vendor. Enable rotation.

Answer: B

NEW QUESTION # 215
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