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Question 385 of 1,730

Management and Operations →mediumMultiple ChoiceObjective-mapped

DBS-C01 Management and Operations Practice Question

This DBS-C01 practice question tests your understanding of management and operations. 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 healthcare company runs a critical application on Amazon RDS for PostgreSQL with a Multi-AZ deployment. The database stores patient records and must comply with HIPAA regulations. Recently, a security audit revealed that the database is using the default port 5432 and that SSL connections are not enforced. The security team requires that all connections to the database use SSL and that the default port be changed to 5439 to reduce the risk of automated attacks. The database administrator needs to implement these changes with minimal downtime. What should the administrator do?

A
Create a new RDS instance with the desired settings, migrate the data using pg_dump, and update the application connection string.
Why wrong: Migration causes longer downtime and is more complex than necessary.
B
Update the security group inbound rules to only allow traffic on port 5439 and enforce SSL at the network level.
Why wrong: Security group changes do not enforce SSL encryption at the database level.
C
Modify the default DB parameter group to change the port and enable SSL, then apply it to the instance without a reboot.
Why wrong: Default parameter groups cannot be modified; you must use a custom parameter group.
D
Modify the DB parameter group associated with the instance to set 'ssl' to '1' and 'port' to 5439. Reboot the instance to apply the changes.
Parameter changes require a reboot; this method has minimal downtime.

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

✓

Modify the DB parameter group associated with the instance to set 'ssl' to '1' and 'port' to 5439. Reboot the instance to apply the changes.

Option D is correct because modifying the DB parameter group to require SSL (set 'ssl' to '1') and change the port to 5439, then rebooting the instance, applies the changes with minimal downtime (a few minutes). Option A is wrong because creating a new RDS instance and migrating with pg_dump involves significant downtime and complexity. Option B is wrong because updating security group inbound rules only controls network access, not database-level SSL enforcement; SSL must be enabled on the database itself. Option C is wrong because you cannot modify the default DB parameter group; you must use a custom parameter group, and changing the port requires a reboot.

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.

✗
Create a new RDS instance with the desired settings, migrate the data using pg_dump, and update the application connection string.
Why it's wrong here
Migration causes longer downtime and is more complex than necessary.
✗
Update the security group inbound rules to only allow traffic on port 5439 and enforce SSL at the network level.
Why it's wrong here
Security group changes do not enforce SSL encryption at the database level.
✗
Modify the default DB parameter group to change the port and enable SSL, then apply it to the instance without a reboot.
Why it's wrong here
Default parameter groups cannot be modified; you must use a custom parameter group.
✓
Modify the DB parameter group associated with the instance to set 'ssl' to '1' and 'port' to 5439. Reboot the instance to apply the changes.
Why this is correct
Parameter changes require a reboot; this method has minimal downtime.
Related concept
Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.

What to study next

Got this wrong? Here's your next step.

Identify which DBS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

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FAQ

Questions learners often ask

What does this DBS-C01 question test?

Management and Operations — This question tests Management and Operations — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Modify the DB parameter group associated with the instance to set 'ssl' to '1' and 'port' to 5439. Reboot the instance to apply the changes. — Option D is correct because modifying the DB parameter group to require SSL (set 'ssl' to '1') and change the port to 5439, then rebooting the instance, applies the changes with minimal downtime (a few minutes). Option A is wrong because creating a new RDS instance and migrating with pg_dump involves significant downtime and complexity. Option B is wrong because updating security group inbound rules only controls network access, not database-level SSL enforcement; SSL must be enabled on the database itself. Option C is wrong because you cannot modify the default DB parameter group; you must use a custom parameter group, and changing the port requires a reboot.

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

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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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.