- A
Use Security Groups and Network ACLs
Why wrong: These are firewall rules that control traffic but do not provide encryption.
- B
Use client-side encryption and store keys in AWS Secrets Manager
Why wrong: Client-side encryption is at-rest, but in-transit encryption (TLS) is still needed; also, key management adds complexity.
- C
Enable S3 default encryption with SSE-S3 and use HTTPS for API calls
SSE-S3 encrypts data at rest in S3; HTTPS encrypts data in transit. This covers both requirements.
- D
Enable VPC peering and use VPN connections
Why wrong: VPC peering and VPN secure network connectivity but do not directly encrypt data at rest.
Question 456 of 1,000
AI0-001 AI Infrastructure and Technologies Practice Question
This AI0-001 practice question tests your understanding of ai infrastructure and technologies. 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 security team needs to ensure that all data used for AI model training in the cloud is encrypted at rest and in transit. Which set of measures meets this requirement on AWS?
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 S3 default encryption with SSE-S3 and use HTTPS for API calls
AWS provides KMS for at-rest encryption and TLS for in-transit encryption. These are standard practices to secure data across the AI pipeline.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use Security Groups and Network ACLs
Why it's wrong here
These are firewall rules that control traffic but do not provide encryption.
- ✗
Use client-side encryption and store keys in AWS Secrets Manager
- ✓
Enable S3 default encryption with SSE-S3 and use HTTPS for API calls
- ✗
Enable VPC peering and use VPN connections
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related AI0-001 ACL questions on filtering logic and placement.
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FAQ
Questions learners often ask
What does this AI0-001 question test?
AI Infrastructure and Technologies — This question tests AI Infrastructure and Technologies — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Enable S3 default encryption with SSE-S3 and use HTTPS for API calls — AWS provides KMS for at-rest encryption and TLS for in-transit encryption. These are standard practices to secure data across the AI pipeline.
What should I do if I get this AI0-001 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related AI0-001 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Last reviewed: Jul 4, 2026
This AI0-001 practice question is part of Courseiva's free CompTIA 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 AI0-001 exam.
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