DVA-C02 Development with AWS Services Practice Question
This DVA-C02 practice question tests your understanding of development with aws services. 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The action is allowed because the Allow statement matches the encryption context.
Option C is correct because the first statement allows decryption when the encryption context equals "finance", and the second statement denies if it does not equal "finance". For the context {"department": "finance"}, it matches both: the Allow applies, and the Deny does not because the condition is not met (it equals, not not-equals). Since an explicit Allow overrides an explicit Deny? Actually, Deny always overrides Allow. But here the Deny condition is not satisfied, so only the Allow applies. So the action is allowed. Option A is wrong because the Deny condition does not match. Option B is wrong because the Allow condition matches. Option D is wrong because the Deny does not apply.
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.
✓
The action is allowed because the Allow statement matches the encryption context.
Why this is correct
The Allow condition matches, and the Deny condition does not, so the action is allowed.
Related concept
Standard ACLs match source addresses.
✗
The action is denied because the Deny statement applies to all resources.
Why it's wrong here
The Deny statement has a condition that does not match, so it does not apply.
✗
The action is denied because there is an explicit Deny that overrides any Allow.
Why it's wrong here
The Deny only applies when the condition is met, which it is not.
✗
The action is denied because the Allow statement does not explicitly allow.
Why it's wrong here
The Allow statement explicitly allows when the condition matches.
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 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.
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 DVA-C02 ACL questions on filtering logic and placement.
Development with AWS Services — This question tests Development with AWS Services — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The action is allowed because the Allow statement matches the encryption context. — Option C is correct because the first statement allows decryption when the encryption context equals "finance", and the second statement denies if it does not equal "finance". For the context {"department": "finance"}, it matches both: the Allow applies, and the Deny does not because the condition is not met (it equals, not not-equals). Since an explicit Allow overrides an explicit Deny? Actually, Deny always overrides Allow. But here the Deny condition is not satisfied, so only the Allow applies. So the action is allowed. Option A is wrong because the Deny condition does not match. Option B is wrong because the Allow condition matches. Option D is wrong because the Deny does not apply.
What should I do if I get this DVA-C02 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 DVA-C02 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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