This DEA-C01 practice question tests your understanding of data store management. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 data engineer needs to migrate an on-premises MongoDB database to AWS. The migration must have minimal downtime and support automatic scaling. Which TWO AWS services should the engineer use for the target data store? (Choose TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon DocumentDB (with MongoDB compatibility)
Options A and D are correct. Amazon DocumentDB is MongoDB-compatible; Amazon DynamoDB is a NoSQL database that can handle document-like data and supports auto scaling. Option B (RDS) is relational; Option C (Redshift) is for analytics; Option E (S3) is object storage, not a database.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Amazon Redshift
Why it's wrong here
Redshift is a data warehouse, not a document database.
✗
Amazon RDS for MySQL
Why it's wrong here
RDS is relational, not suitable for MongoDB document model.
✓
Amazon DocumentDB (with MongoDB compatibility)
Why this is correct
DocumentDB is compatible with MongoDB workloads.
Related concept
Static NAT maps one inside address to one outside address.
✓
Amazon DynamoDB
Why this is correct
DynamoDB is a NoSQL database that can store JSON documents and supports auto scaling.
Related concept
Static NAT maps one inside address to one outside address.
✗
Amazon S3
Why it's wrong here
S3 is object storage, not suitable as primary database for MongoDB workloads.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DEA-C01 NAT questions on configuration and troubleshooting.
Data Store Management — This question tests Data Store Management — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Amazon DocumentDB (with MongoDB compatibility) — Options A and D are correct. Amazon DocumentDB is MongoDB-compatible; Amazon DynamoDB is a NoSQL database that can handle document-like data and supports auto scaling. Option B (RDS) is relational; Option C (Redshift) is for analytics; Option E (S3) is object storage, not a database.
What should I do if I get this DEA-C01 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DEA-C01 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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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
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