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 121–130 of 498

Q121

Which service is best for automating data lakes?

  • A AWS Lake Formation
  • B AWS RDS
  • C AWS DynamoDB
  • D AWS Glue
Explanation AWS Lake Formation simplifies data lake creation and management; the others focus on different data services.
Q122

A data analyst needs to analyze log files stored in S3 and generate reports. What should you use?

  • A AWS Athena
  • B AWS Lambda
  • C AWS EMR
  • D Amazon RDS
Explanation AWS Athena is an ideal serverless query service for log analysis in S3; the others are less suited for direct querying of S3 data.
Q123

You are configuring AWS IAM roles and want to ensure minimal privileges. What should you apply?

  • A AWS Managed Policies
  • B AWS IAM Best Practices
  • C Resource-based Policies
  • D Inline Policies
Explanation AWS IAM Best Practices advocate for the principle of least privilege; managed and inline policies do not inherently ensure this principle.
Q124

Which AWS service is designed for real-time data stream processing?

  • A Amazon Kinesis
  • B AWS Glue
  • C Amazon EMR
  • D Amazon Athena
Explanation Amazon Kinesis is specifically built for real-time data stream processing, while others serve different functions.
Q125

A company needs to run machine learning models at scale without managing infrastructure. Which service should they use?

  • A AWS SageMaker
  • B Amazon EC2
  • C AWS Lambda
  • D Amazon RDS
Explanation AWS SageMaker provides infrastructure management for large-scale machine learning models, unlike EC2 or RDS.
Q126

You are configuring an S3 bucket. What happens if you set the bucket policy to deny all public access?

  • A Public read access is allowed
  • B Only specific users can access
  • C All access is blocked
  • D Write access is denied only
Explanation Denying public access blocks all public access patterns entirely to the bucket.
Q127

Which AWS service provides a fully managed NoSQL database?

  • A DynamoDB
  • B RDS
  • C Redshift
  • D S3
Explanation DynamoDB is the only fully managed NoSQL database service among the options.
Q128

A company needs real-time analytics on data streamed from IoT devices. Which AWS service is best suited?

  • A Kinesis
  • B Athena
  • C Glue
  • D CloudFormation
Explanation Kinesis is designed specifically for processing real-time streaming data.
Q129

What happens when you enable versioning on an S3 bucket?

  • A Only the latest file is kept.
  • B All versions of files are stored.
  • C Files are automatically encrypted.
  • D Storage cost decreases.
Explanation Enabling versioning allows S3 to retain all versions of an object in the bucket.
Q130

What happens when an Auto Scaling group is configured with an instance cooldown period?

  • A Instances are terminated immediately.
  • B No new instances are launched.
  • C Scaling policies are ignored.
  • D Prevent scaling actions for a time.
Explanation The cooldown period prevents further scaling actions for a specified time to allow previous changes to stabilize. Options A, B, and C misrepresent the function of cooldowns in Auto Scaling.