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DEA-C01 Data Ingestion and Transformation Practice Question

Network Topology
aws kinesis describe-streamstream-name my-data-streamRefer to the exhibit."StreamDescription": {"StreamName": "my-data-stream","StreamARN": "arn:aws:kinesis:us-east-1:123456789012:stream/my-data-stream","StreamStatus": "ACTIVE","Shards": ["ShardId": "shardId-000000000000","HashKeyRange": {"StartingHashKey": "0","EndingHashKey": "340282366920938463463374607431768211455"},"SequenceNumberRange": {"StartingSequenceNumber": "49614583901234567890123456789012345678901234567890123456"],"EnhancedMonitoring": [],"EncryptionType": "KMS","KeyId": "arn:aws:kms:us-east-1:123456789012:key/abc123","RetentionPeriodHours": 24

A data engineer runs the command shown. The consumer application is unable to read data older than 24 hours. What is the most likely cause?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

The retention period is set to 24 hours, so data older than 24 hours is deleted.

The stream's retention period is 24 hours, meaning data is automatically deleted after 24 hours. The consumer tries to read data older than 24 hours, which is no longer available.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    The shard has reached its maximum sequence number.

    Why it's wrong here

    A shard can have a very large sequence number; this is not a limit.

  • ✗

    The stream is encrypted with KMS, preventing access.

    Why it's wrong here

    KMS encryption does not block reading data within the retention period.

  • ✓

    The retention period is set to 24 hours, so data older than 24 hours is deleted.

    Why this is correct

    Data retention is 24 hours; data beyond that is expired.

  • ✗

    The stream is in ACTIVE status but not processing data.

    Why it's wrong here

    ACTIVE means the stream is working normally.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This DEA-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DEA-C01 exam.