mediummulti selectObjective-mapped

A containerized service runs in private subnets and retrieves secrets from AWS Secrets Manager and configuration parameters from AWS Systems Manager Parameter Store on startup. A NAT Gateway is currently used only for these AWS API calls, and the security team wants to eliminate that recurring charge. Which two endpoints should be added? Select two.

Question 1mediummulti select
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A containerized service runs in private subnets and retrieves secrets from AWS Secrets Manager and configuration parameters from AWS Systems Manager Parameter Store on startup. A NAT Gateway is currently used only for these AWS API calls, and the security team wants to eliminate that recurring charge. Which two endpoints should be added? Select two.

Answer choices

Why each option matters

Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.

A

Best answer

Create an interface VPC endpoint for AWS Secrets Manager.

Secrets Manager uses an interface endpoint in a private-subnet design. That keeps startup traffic off the NAT Gateway while still letting the service retrieve secrets privately over the AWS network.

B

Best answer

Create an interface VPC endpoint for AWS Systems Manager.

Systems Manager provides the API path used by Parameter Store. Adding the interface endpoint removes those configuration lookups from the NAT path and directly lowers recurring NAT charges.

C

Distractor review

Create a gateway VPC endpoint for Amazon S3 instead.

An S3 gateway endpoint is useful when workloads need private access to S3, but this startup path is for Secrets Manager and Parameter Store. Adding S3 endpoints would not remove the NAT charges described in the scenario.

D

Distractor review

Add an Internet Gateway and send the traffic through public subnets.

That would expose the service to the internet and does not reduce outbound traffic cost. The requirement is to keep the workload private and remove the need for NAT while still reaching AWS services.

E

Distractor review

Replace the NAT Gateway with a NAT instance.

A NAT instance can sometimes reduce cost, but it still requires an egress path and adds patching, scaling, and availability management. It does not eliminate the AWS API traffic cost the way the right VPC endpoints do.

Common exam trap

Common exam trap: usable hosts are not the same as total addresses

Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.

Technical deep dive

How to think about this question

Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.

KKey Concepts to Remember

  • CIDR notation defines the prefix length.
  • Block size helps identify subnet boundaries.
  • Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
  • The required host count determines the smallest suitable subnet.

TExam Day Tips

  • Write the block size before choosing the subnet.
  • Check whether the question asks for hosts, subnets or a specific address range.
  • Do not confuse /24, /25, /26 and /27 host counts.

Related practice questions

Related SAA-C03 practice-question pages

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

More questions from this exam

Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.

FAQ

Questions learners often ask

What does this SAA-C03 question test?

CIDR notation defines the prefix length.

What is the correct answer to this question?

The correct answer is: Create an interface VPC endpoint for AWS Secrets Manager. — Interface VPC endpoints for Secrets Manager and Systems Manager are the right fix because both services are accessed through AWS APIs from private subnets. Using those endpoints keeps the traffic on the AWS network and eliminates the need to send those calls through the NAT Gateway. That directly reduces recurring NAT charges while preserving private connectivity and security. Why others are wrong: An S3 endpoint does not address Secrets Manager or Parameter Store traffic. Moving the workloads to public subnets does not reduce the traffic cost and weakens isolation. A NAT instance still leaves you with egress traffic and operational overhead, so it does not remove the recurring cost in the cleanest way.

What should I do if I get this SAA-C03 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.

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