Quick Answer
The correct answer is the pgAudit extension. This is because Amazon RDS for PostgreSQL supports the pgAudit extension as a fully managed, high-performance solution for detailed session and object audit logging, allowing you to capture all executed SQL queries, including DDL, DML, and SELECT statements, directly from the PostgreSQL engine. On the AWS Certified Database Specialty DBS-C01 exam, this question tests your ability to distinguish between native PostgreSQL audit tools and AWS-specific logging features; a common trap is confusing pgAudit with RDS Enhanced Monitoring or database activity streams, which serve different purposes for performance and replication, not granular SQL auditing. Remember that pgAudit is a PostgreSQL extension, not an AWS service, so you enable it via a shared library parameter in the RDS parameter group. Memory tip: think “pgAudit = PostgreSQL Audit” to avoid mixing it up with MySQL’s Audit Plugin or Oracle’s Unified Auditing.
This DBS-C01 practice question tests your understanding of management and operations. 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 needs to audit all SQL queries executed on an Amazon RDS for PostgreSQL instance. Which feature should the company enable?
pgAudit extension
pgAudit provides detailed audit logs.
Advanced Audit
Why wrong: This is for MySQL.
Database Activity Streams
Why wrong: Not supported for PostgreSQL.
Fine-Grained Auditing
Why wrong: This is for Oracle.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
pgAudit extension
Option A is correct because RDS for PostgreSQL supports pgAudit extension. Option B is incorrect because it is not a feature. Option C is incorrect because it is for MySQL. Option D is incorrect because it is for Oracle.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
pgAudit extension
Why this is correct
pgAudit provides detailed audit logs.
Related concept
Standard ACLs match source addresses.
Advanced Audit
Why it's wrong here
This is for MySQL.
Database Activity Streams
Why it's wrong here
Not supported for PostgreSQL.
Fine-Grained Auditing
Why it's wrong here
This is for Oracle.
Common exam traps
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DBS-C01 ACL questions on filtering logic and placement.
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FAQ
Management and Operations — This question tests Management and Operations — Standard ACLs match source addresses..
The correct answer is: pgAudit extension — Option A is correct because RDS for PostgreSQL supports pgAudit extension. Option B is incorrect because it is not a feature. Option C is incorrect because it is for MySQL. Option D is incorrect because it is for Oracle.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DBS-C01 ACL questions on filtering logic and placement.
Standard ACLs match source addresses.
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Last reviewed: Jun 20, 2026
This DBS-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 DBS-C01 exam.
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