Amazon AWS

AWS Certified Data Engineer – Associate

DEA-C01

The AWS Certified Data Engineer – Associate (DEA-C01) exam validates your skills in data engineering on AWS. It is suitable for those who want to demonstrate their ability to design and implement data solutions.

498 questions 0 views Free
Start Mock Test Timed · Full-length · Scored

Questions 291–300 of 498

Q291

What happens when an AWS CloudFormation stack fails during creation?

  • A All resources are created.
  • B Resources get deleted automatically.
  • C The stack enters a rollback state.
  • D No action is taken.
Explanation A failed stack creation triggers a rollback to restore the previous state, while options A, B, and D do not occur.
Q292

Which AWS service would you use for real-time stream processing?

  • A Amazon Kinesis
  • B Amazon S3
  • C AWS Lambda
  • D Amazon RDS
Explanation Amazon Kinesis is designed specifically for real-time stream processing, while the others serve different purposes.
Q293

You are configuring an S3 bucket policy. What is a principal?

  • A An IAM group
  • B An AWS service
  • C An entity accessing the resource
  • D A storage tier in S3
Explanation A principal represents an entity making requests to access resources, while the others do not define an accessing entity.
Q294

A company's data warehouse on Redshift experiences slow query performance. What could be the reason?

  • A Underutilized node types
  • B Too few nodes in the cluster
  • C Using Spectrum only
  • D Read replicas not enabled
Explanation Too few nodes in the Redshift cluster can lead to slow query performance, while the others do not directly cause such an issue.
Q295

Which AWS service is used for serverless event-driven computing?

  • A AWS Lambda
  • B AWS EC2
  • C AWS RDS
  • D AWS DynamoDB
Explanation AWS Lambda is specifically designed for serverless compute, while the others serve different purposes.
Q296

A company needs to run containerized applications. Which service should they use?

  • A Amazon S3
  • B AWS ECS
  • C AWS RDS
  • D AWS CloudFormation
Explanation AWS ECS (Elastic Container Service) is designed for managing containers, while the others do not offer this capability.
Q297

What happens when an Amazon S3 bucket policy denies all access?

  • A All operations are blocked
  • B Read operations continue
  • C Write operations are still allowed
  • D Only specific accounts can access
Explanation A policy that denies all access blocks every operation, while the other options incorrectly suggest partial or selective access.
Q298

Which service is primarily used for managing a NoSQL database in AWS?

  • A DynamoDB
  • B RDS
  • C Redshift
  • D S3
Explanation DynamoDB is designed for NoSQL; RDS supports SQL databases, Redshift is for analytics, and S3 is for storage.
Q299

A company needs a reliable data transfer mechanism between AWS and their on-premises data center. Which AWS service should they use?

  • A Amazon Direct Connect
  • B AWS VPN
  • C AWS Storage Gateway
  • D AWS Snowball
Explanation Amazon Direct Connect provides a dedicated link for reliable transfers; VPN is less stable, Storage Gateway is for backup, and Snowball is for bulk transfer.
Q300

What happens when you exceed the read capacity units in DynamoDB?

  • A Throttling occurs
  • B Data is lost
  • C Cost increases
  • D Query results become outdated
Explanation Throttling limits request rates without data loss; costs do not automatically increase without provisioning changes, and query results remain accurate.