The correct answer is to download the RDS CA certificate to the EC2 instance and configure the database client to use SSL with certificate verification. This is the most secure way to encrypt data in transit between EC2 and RDS because it not only enables TLS encryption but also authenticates the RDS server’s identity, preventing man-in-the-middle attacks where a fake server could intercept the traffic. On the AWS Certified Security Specialty SCS-C02 exam, this concept tests your understanding that encryption in transit is never automatic—the client must explicitly initiate SSL and validate the certificate chain. A common trap is assuming that simply enabling SSL on the RDS side or using an IAM policy is sufficient; neither enforces client-side verification. Remember the mnemonic: “Client must check the cert, or the MITM will hurt.”
SCS-C02 Data Protection Practice Question
This SCS-C02 practice question tests your understanding of data protection. 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 security engineer needs to protect data in transit between an EC2 instance and an RDS database. The RDS database uses SSL/TLS certificates. What is the MOST secure way to ensure that the connection is encrypted?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Download the RDS CA certificate to the EC2 instance and configure the database client to use SSL and verify the certificate.
Option B is correct because downloading the RDS CA certificate and requiring SSL on the client side ensures the connection is encrypted and verifies the server identity. Option A is wrong because using a self-signed certificate without verification can lead to MITM attacks. Option C is wrong because encryption in transit is not automatic; the client must initiate SSL. Option D is wrong because an IAM policy cannot enforce SSL on the database connection.
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.
✗
Configure the EC2 instance to use a self-signed certificate for SSL connections.
Why it's wrong here
Self-signed certificates do not provide verification of the server identity.
✗
Enable encryption at rest on the RDS instance to automatically encrypt in-transit traffic.
Why it's wrong here
Encryption at rest does not affect data in transit.
✓
Download the RDS CA certificate to the EC2 instance and configure the database client to use SSL and verify the certificate.
Why this is correct
This provides strong encryption and server identity verification.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create an IAM policy that requires SSL connections to the RDS endpoint.
Why it's wrong here
IAM policies cannot enforce SSL at the database connection level.
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 SCS-C02 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.
Data Protection — This question tests Data Protection — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Download the RDS CA certificate to the EC2 instance and configure the database client to use SSL and verify the certificate. — Option B is correct because downloading the RDS CA certificate and requiring SSL on the client side ensures the connection is encrypted and verifies the server identity. Option A is wrong because using a self-signed certificate without verification can lead to MITM attacks. Option C is wrong because encryption in transit is not automatic; the client must initiate SSL. Option D is wrong because an IAM policy cannot enforce SSL on the database connection.
What should I do if I get this SCS-C02 question wrong?
Identify which SCS-C02 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.
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 →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company needs to encrypt data in transit between an EC2 instance and an RDS database. Which option should be used?
easy
A.Enable encryption at rest for the RDS instance
✓ B.Configure the database to use SSL/TLS connections
C.Use an AWS KMS key to encrypt the connection
D.Enable EBS encryption on the EC2 instance
Why B: Option B is correct because encrypting data in transit between an EC2 instance and an RDS database requires the use of SSL/TLS protocols to secure the communication channel. AWS RDS supports SSL/TLS connections by enabling the `require_secure_transport` parameter or using a certificate bundle on the client side, ensuring that all data transmitted over the network is encrypted and protected from eavesdropping or man-in-the-middle attacks.
Variation 2. A company needs to ensure that data in transit between an EC2 instance and an RDS database is encrypted. Which solution meets this requirement?
easy
A.Use a VPN connection between the VPC and the database
B.Enable encryption at rest on the RDS instance
✓ C.Enable SSL/TLS on the database connection
D.Use client-side encryption on the application
Why C: SSL/TLS encrypts data in transit between client and database. Option B is wrong because encryption at rest does not protect data in transit. Option C is wrong because VPN provides encryption but is overkill for direct connect. Option D is wrong because client-side encryption would require application changes.
Last reviewed: Jun 20, 2026
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.
This SCS-C02 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 SCS-C02 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.