- A
Establish an AWS Site-to-Site VPN between the web tier subnets and the database subnet.
Why wrong: Unnecessary for within-VPC traffic.
- B
Create a VPC endpoint for Amazon RDS and route database traffic through it.
Why wrong: VPC endpoints are for AWS services like S3, not for RDS within same VPC.
- C
Enable SSL/TLS encryption on the RDS DB instance and configure the web servers to connect using SSL.
Encrypts traffic between web and database tiers.
- D
Assign an Elastic IP address to the RDS DB instance to ensure a stable IP for the web tier.
Why wrong: RDS instances do not use Elastic IPs; they use DNS names.
- E
Use the RDS endpoint (DNS name) that resolves to a private IP within the same VPC.
Ensures traffic stays within AWS network, not internet.
Question 410 of 1,705
ANS-C01 Network Implementation Practice Question
This ANS-C01 practice question tests your understanding of network implementation. 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 company is deploying a multi-tier web application across multiple Availability Zones in a VPC. The architecture includes public-facing Application Load Balancers, Amazon EC2 instances in private subnets, and an Amazon RDS for MySQL Multi-AZ DB instance. To meet compliance requirements, all traffic between the web tier and database tier must be encrypted and must not traverse the internet. Which TWO actions should the company take to implement this securely? (Choose two.)
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
✓
Enable SSL/TLS encryption on the RDS DB instance and configure the web servers to connect using SSL.
Option C is correct because enabling SSL/TLS encryption on the RDS DB instance and configuring the web servers to connect using SSL ensures that all traffic between the web tier and database tier is encrypted in transit. This satisfies the compliance requirement for encrypted traffic without needing external connectivity. Option E is correct because using the RDS endpoint (DNS name) that resolves to a private IP within the same VPC ensures that database traffic remains within the VPC and does not traverse the internet, meeting the compliance requirement for no internet traversal.
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.
- ✗
Establish an AWS Site-to-Site VPN between the web tier subnets and the database subnet.
Why it's wrong here
Unnecessary for within-VPC traffic.
- ✗
Create a VPC endpoint for Amazon RDS and route database traffic through it.
Why it's wrong here
VPC endpoints are for AWS services like S3, not for RDS within same VPC.
- ✓
Enable SSL/TLS encryption on the RDS DB instance and configure the web servers to connect using SSL.
Why this is correct
Encrypts traffic between web and database tiers.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Assign an Elastic IP address to the RDS DB instance to ensure a stable IP for the web tier.
- ✓
Use the RDS endpoint (DNS name) that resolves to a private IP within the same VPC.
Why this is correct
Ensures traffic stays within AWS network, not internet.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse VPC endpoints (which are used for AWS services like S3 or DynamoDB) with the need for private connectivity to RDS, but RDS within the same VPC already uses private IPs, and the real focus is on enabling SSL/TLS encryption and using the private DNS endpoint to keep traffic internal.
Detailed technical explanation
How to think about this question
When SSL/TLS is enabled on RDS, the DB instance uses a certificate from the AWS Certificate Manager (ACM) or a self-signed certificate, and the web servers must verify the certificate chain (e.g., using the `--ssl-ca` parameter in MySQL or `sslmode=require` in PostgreSQL). The RDS endpoint DNS name resolves to a private IP address within the VPC via Amazon Route 53 private hosted zones, ensuring traffic stays on the AWS network backbone and never traverses the internet, even without a VPC endpoint or NAT gateway.
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.
TExam Day Tips
- 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 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.
Visual reference
What to study next
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Implementation — This question tests Network Implementation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable SSL/TLS encryption on the RDS DB instance and configure the web servers to connect using SSL. — Option C is correct because enabling SSL/TLS encryption on the RDS DB instance and configuring the web servers to connect using SSL ensures that all traffic between the web tier and database tier is encrypted in transit. This satisfies the compliance requirement for encrypted traffic without needing external connectivity. Option E is correct because using the RDS endpoint (DNS name) that resolves to a private IP within the same VPC ensures that database traffic remains within the VPC and does not traverse the internet, meeting the compliance requirement for no internet traversal.
What should I do if I get this ANS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This ANS-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 ANS-C01 exam.
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