The correct answer is to enable automated backups with a 35-day retention period and create a manual snapshot each night for testing. This works because Amazon RDS automated backups handle point-in-time recovery (PITR) by storing transaction logs for the entire retention window, which can be set up to a maximum of 35 days for PostgreSQL, allowing you to restore to any second within that period. The nightly manual snapshot, meanwhile, provides a stable, independent copy for testing without interfering with the automated backup schedule or the source database’s performance. On the AWS Certified Data Engineer Associate DEA-C01 exam, this question tests your understanding of the distinct roles of automated backups versus manual snapshots—a common trap is assuming a single automated backup can serve both PITR and nightly testing needs, but manual snapshots are required for independent, long-lived copies. Remember the memory tip: “Auto for time travel, manual for test gravel”—automated backups let you rewind to any point, while manual snapshots give you a fixed, reusable test copy.
DEA-C01 Data Store Management Practice Question
This DEA-C01 practice question tests your understanding of data store management. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company runs an Amazon RDS for PostgreSQL instance that stores financial data. The company requires point-in-time recovery (PITR) with a retention period of 35 days. Additionally, the company needs to create a new database from a specific snapshot every night for testing. Which combination of actions should the data engineer take to meet these requirements?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable automated backups with a 35-day retention period and create a manual snapshot each night for testing.
Option A is correct because automated backups in Amazon RDS for PostgreSQL support a maximum retention period of 35 days, which satisfies the PITR requirement. Additionally, creating a manual snapshot each night provides a stable, independent copy for testing without interfering with the automated backup schedule or the source database's performance.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Enable automated backups with a 35-day retention period and create a manual snapshot each night for testing.
Why this is correct
Automated backups provide PITR; manual snapshots are independent and can be restored for testing.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a read replica and promote it to a new instance for testing each night.
Why it's wrong here
Read replicas are for read scaling, not for creating consistent snapshots for testing.
✗
Enable Multi-AZ and use the standby instance for testing.
Why it's wrong here
Standby instance is not accessible for testing; Multi-AZ is for high availability.
✗
Disable automated backups to reduce storage costs and take manual snapshots with 35-day retention.
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the purpose of Multi-AZ standby instances (which are not directly usable for testing) or assume that manual snapshots alone can provide PITR, but automated backups are strictly required for point-in-time recovery in RDS.
Detailed technical explanation
How to think about this question
Automated backups in RDS for PostgreSQL include both daily snapshots and transaction logs, enabling PITR to any second within the retention period (up to 35 days). Manual snapshots are independent, full database snapshots that do not rely on automated backup retention; they can be used to create new DB instances without affecting the automated backup chain. Under the hood, RDS stores transaction logs in an internal S3 bucket and uses PostgreSQL's WAL (Write-Ahead Log) archiving to support PITR, while manual snapshots are stored as separate EBS snapshots.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Data Store Management — This question tests Data Store Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable automated backups with a 35-day retention period and create a manual snapshot each night for testing. — Option A is correct because automated backups in Amazon RDS for PostgreSQL support a maximum retention period of 35 days, which satisfies the PITR requirement. Additionally, creating a manual snapshot each night provides a stable, independent copy for testing without interfering with the automated backup schedule or the source database's performance.
What should I do if I get this DEA-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.