Question 1mediummulti select
Full question →mediummulti selectObjective-mapped
A workload runs in private subnets and must reach Amazon S3 and AWS Secrets Manager without using the internet or a NAT gateway. The team wants to keep the traffic on AWS private networking and avoid public IPs. Which two changes should the architect make? 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 S3 gateway VPC endpoint and update the route tables for the private subnets.
An S3 gateway endpoint provides private access to S3 without sending traffic over the internet. It is the correct endpoint type for S3 and integrates through route tables.
B
Distractor review
Place a NAT gateway in the public subnet so the private instances can reach AWS services.
A NAT gateway sends outbound traffic to the internet and adds cost and exposure that the requirement explicitly forbids. It is not a private-only connectivity solution.
C
Best answer
Create an interface VPC endpoint for AWS Secrets Manager and allow the workload security group to reach it.
Secrets Manager uses an interface endpoint for private connectivity. This keeps API calls inside the AWS network and avoids the need for internet access or NAT.
D
Distractor review
Assign public IPv4 addresses to the instances and restrict them with security groups.
Public IPs contradict the requirement to stay private and do not remove internet exposure. Security groups alone do not make a workload private.
E
Distractor review
Use VPC peering to the AWS service endpoints instead of VPC endpoints.
VPC peering is for connectivity between VPCs, not for reaching managed AWS service endpoints. It is not the right mechanism for private service access.
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.
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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.
Question 1
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Question 2
A team wants to run containerized services with AWS-managed orchestration and autoscaling. They do NOT require Kubernetes compatibility. Which AWS service choice is most appropriate to meet these goals?
Question 3
A solutions architect is designing an S3 bucket for a IoT ingestion API. The objects must never be publicly accessible, even if a developer later adds an overly broad bucket policy. What should the architect configure? The design must avoid adding custom operational scripts.
Question 4
A solutions architect is designing an S3 bucket for a claims portal. The objects must never be publicly accessible, even if a developer later adds an overly broad bucket policy. What should the architect configure?
Question 5
A team wants to delegate IAM management to developers, but must ensure developers can never grant themselves permissions beyond a specific limit. Which AWS mechanism best matches this requirement?
Question 6
A solutions architect is designing an S3 bucket for a healthcare document service. The objects must never be publicly accessible, even if a developer later adds an overly broad bucket policy. What should the architect configure?
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 S3 gateway VPC endpoint and update the route tables for the private subnets. — The correct design uses an S3 gateway endpoint and a Secrets Manager interface endpoint. That combination allows the private subnets to reach both services without NAT gateways, public IPs, or internet routing. It also reduces exposure and is usually cheaper and simpler to operate than sending traffic through an egress path. Why others are wrong: NAT gateways and public IPs both introduce internet exposure that the requirement rejects. VPC peering does not provide private access to AWS service endpoints. The endpoint choices matter because S3 and Secrets Manager use different endpoint types, and selecting the wrong one would either fail or create unnecessary network cost.
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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