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Data Security and Governance →hardMultiple ChoiceObjective-mapped

Quick Answer

The correct approach is to use AWS Lake Formation to grant SELECT permission on the database and tables without granting any S3 access. Lake Formation acts as a fine-grained permissions layer that decouples the user from the underlying storage, meaning the data scientist can query the Glue Data Catalog through Athena or Redshift Spectrum without ever seeing the S3 bucket paths or object keys. On the AWS Certified Data Engineer Associate DEA-C01 exam, this scenario tests your understanding that Lake Formation’s row-level and column-level filters control data visibility, while hiding S3 locations is achieved by simply not granting the user any S3 IAM or bucket policy access. A common trap is assuming that granting IAM read-only access to S3 is harmless—it actually exposes the full S3 path in query results and console views. Remember the key distinction: Lake Formation governs the catalog, not the storage; if the user has no S3 permissions, they cannot see the location. Memory tip: “No S3 path, no problem—Lake Formation hides the bucket from the query.”

DEA-C01 Data Security and Governance Practice Question

This DEA-C01 practice question tests your understanding of data security and governance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 grant a data scientist access to query a Glue Data Catalog database but must prevent the data scientist from seeing the underlying S3 data locations. Which approach should be used?

Question 1hardmultiple choice

Full question →

A
Use a Glue resource policy to restrict access to the database
Why wrong: Glue resource policies can control access to the catalog but do not prevent the user from seeing S3 locations if they have S3 access.
B
Grant the data scientist IAM permissions to access the Glue Data Catalog and the underlying S3 data
Why wrong: This would allow the data scientist to see the S3 locations.
C
Create a VPC endpoint for Glue and S3 to restrict network access
Why wrong: VPC endpoints control network access but do not hide S3 locations from the user.
D
Use AWS Lake Formation to grant SELECT permission on the database and tables without granting S3 access
Lake Formation can grant access to the Data Catalog and data without giving direct S3 access, and it can hide the S3 locations.

Full breakdown with real-world context →

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

✓

Use AWS Lake Formation to grant SELECT permission on the database and tables without granting S3 access

Lake Formation can be used to grant SELECT permission on the database and tables, and by using column-level and row-level filters, but to hide S3 locations, the data scientist should not have direct S3 access. Lake Formation does not require the user to see the S3 path. Granting IAM read-only access to S3 would expose locations. Using a VPC endpoint does not hide locations. Glue resource policies cannot hide S3 locations.

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.

✗
Use a Glue resource policy to restrict access to the database
Why it's wrong here
Glue resource policies can control access to the catalog but do not prevent the user from seeing S3 locations if they have S3 access.
✗
Grant the data scientist IAM permissions to access the Glue Data Catalog and the underlying S3 data
Why it's wrong here
This would allow the data scientist to see the S3 locations.
✗
Create a VPC endpoint for Glue and S3 to restrict network access
Why it's wrong here
VPC endpoints control network access but do not hide S3 locations from the user.
✓
Use AWS Lake Formation to grant SELECT permission on the database and tables without granting S3 access
Why this is correct
Lake Formation can grant access to the Data Catalog and data without giving direct S3 access, and it can hide the S3 locations.
Related concept
Static NAT maps one inside address to one outside address.

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.

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FAQ

Questions learners often ask

What does this DEA-C01 question test?

Data Security and Governance — This question tests Data Security and Governance — Static NAT maps one inside address to one outside address..

What is the correct answer to this question?

The correct answer is: Use AWS Lake Formation to grant SELECT permission on the database and tables without granting S3 access — Lake Formation can be used to grant SELECT permission on the database and tables, and by using column-level and row-level filters, but to hide S3 locations, the data scientist should not have direct S3 access. Lake Formation does not require the user to see the S3 path. Granting IAM read-only access to S3 would expose locations. Using a VPC endpoint does not hide locations. Glue resource policies cannot hide S3 locations.

What should I do if I get this DEA-C01 question wrong?

What is the key concept behind this question?

Static NAT maps one inside address to one outside address.

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