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 211–220 of 498

Q211

Which AWS service is designed for real-time streaming of data?

  • A Amazon Kinesis
  • B AWS Glue
  • C Amazon Redshift
  • D Amazon S3
Explanation Amazon Kinesis is specifically built for real-time data streaming; the others are for batch processing or storage.
Q212

A company needs to store objects with varying access patterns in a cost-efficient manner. Which S3 storage class should they choose?

  • A S3 Standard
  • B S3 Intelligent-Tiering
  • C S3 One Zone-IA
  • D S3 Glacier
Explanation S3 Intelligent-Tiering automatically moves data between two access tiers based on changing access patterns, while others are either for frequent access or archival storage.
Q213

What happens when you delete a CloudFormation stack?

  • A All resources are retained automatically
  • B Resources are deleted by default
  • C Only changed resources are deleted
  • D It enters a deletion protection state
Explanation By default, all resources defined in the stack are deleted unless specified otherwise; retaining resources requires additional configuration.
Q214

Which service is used for running containerized applications on AWS?

  • A AWS Lambda
  • B Amazon ECS
  • C AWS Elastic Beanstalk
  • D Amazon EC2
Explanation Amazon ECS is specifically designed for running containers, while the others are more general application or compute services.
Q215

A company needs to store sensitive data with encryption. Which service should they use?

  • A Amazon S3 without encryption
  • B AWS Glue
  • C Amazon RDS with encryption
  • D Amazon DynamoDB with public access
Explanation Amazon RDS can encrypt sensitive data, while the other options either do not secure the data or are not designed for sensitive data storage.
Q216

You are configuring a VPC with two subnets. What happens if you assign these subnets different route tables?

  • A Increased latency
  • B Independently managed traffic
  • C Automatic traffic separation
  • D No traffic between subnets
Explanation Different route tables allow the subnets to have separate traffic management while still enabling communication between them unless restricted.
Q217

Which AWS service can automatically scale the number of running instances?

  • A Amazon EC2 Auto Scaling
  • B AWS Lambda
  • C Amazon RDS
  • D Amazon S3
Explanation Amazon EC2 Auto Scaling adjusts instance count, while others do not support auto-scaling at instance level.
Q218

A company needs to secure a confidential database. Which method provides the strongest security?

  • A Encrypt data at rest and in transit
  • B Use a physical lock on the server
  • C Limit access with IAM roles only
  • D Regular backups to S3
Explanation Encrypting data at rest and in transit offers the best protection against unauthorized access.
Q219

You are configuring a data pipeline using AWS Data Pipeline. What happens when a time-based scheduling fails?

  • A The pipeline automatically retries indefinitely
  • B The task is marked as failed
  • C It sends an alert to SNS
  • D The task retries a fixed number of times
Explanation By default, failed tasks will retry a specified number of times before considering it a failure.
Q220

Which service allows you to run code without provisioning servers?

  • A AWS Lambda
  • B Amazon EC2
  • C Amazon S3
  • D AWS Batch
Explanation AWS Lambda executes code in response to events without server management, whereas EC2 is for virtual servers, S3 for storage, and AWS Batch for processing jobs.