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 151–160 of 498

Q151

Which AWS service is best for real-time data streaming?

  • A Amazon Kinesis
  • B Amazon S3
  • C AWS Lambda
  • D Amazon RDS
Explanation Amazon Kinesis is designed for real-time data streaming, while S3 is primarily for storage, Lambda for event-driven compute, and RDS for relational databases.
Q152

A company needs to analyze large datasets stored in S3. Which service should they use?

  • A Amazon Redshift
  • B AWS Glue
  • C Amazon EMR
  • D Amazon Athena
Explanation Amazon Athena allows SQL queries directly on S3 data, while Redshift is for warehousing, Glue for ETL, and EMR for processing with Hadoop/Spark.
Q153

You are configuring an AWS IoT Greengrass device. What is the purpose of Lambda Functions in this context?

  • A To connect to RDS
  • B To process data locally
  • C To store data in S3
  • D To visualize data in QuickSight
Explanation Lambda Functions in Greengrass process data locally on the device, while RDS, S3, and QuickSight are unrelated to local processing.
Q154

Which service is best for data warehousing in AWS?

  • A Amazon Redshift
  • B Amazon S3
  • C Amazon DynamoDB
  • D Amazon RDS
Explanation Amazon Redshift is specifically designed for data warehousing, while the others serve different purposes.
Q155

A company needs to encrypt sensitive data at rest. Which AWS service should they use?

  • A AWS Lambda
  • B Amazon S3 with SSE
  • C Amazon EC2 only
  • D Amazon RDS without encryption
Explanation Amazon S3 with Server-Side Encryption (SSE) effectively protects sensitive data at rest.
Q156

What happens when a user exceeds their EC2 Spot Instance request limits?

  • A No instances launched
  • B Instances are terminated immediately
  • C Request is canceled automatically
  • D Instances launch at on-demand rates
Explanation When limits are exceeded, no Spot Instances will be launched until the request is modified.
Q157

Which service provides serverless compute for web applications?

  • A AWS Lambda
  • B Amazon EC2
  • C AWS Batch
  • D Amazon S3
Explanation AWS Lambda runs code without provisioning servers, while EC2 requires servers, AWS Batch is for batch jobs, and S3 is for storage.
Q158

A company needs to replicate data across multiple AWS Regions. Which service should they use?

  • A AWS Backup
  • B Amazon RDS Multi-AZ
  • C Amazon S3 Cross-Region Replication
  • D AWS Data Pipeline
Explanation Amazon S3 Cross-Region Replication allows for automatic data replication across regions; other options focus on different functionalities without cross-region capabilities.
Q159

You are configuring an IAM policy. What happens if you attach a policy that explicitly denies access even if another policy allows it?

  • A Access is granted
  • B Access is denied
  • C Access depends on the condition
  • D Access is asked for confirmation
Explanation Explicit deny in IAM policies takes precedence over allows, while other options misrepresent IAM behavior.
Q160

A company needs to store large amounts of unstructured data. Which service should they use?

  • A Amazon S3
  • B Amazon RDS
  • C Amazon DynamoDB
  • D Amazon ElastiCache
Explanation Amazon S3 is optimal for unstructured data storage, while RDS and DynamoDB are for structured data and ElastiCache for caching.