The answer is that the applications are using HTTP instead of HTTPS, which triggers the bucket policy’s explicit Deny statement. This policy uses a condition key, aws:SecureTransport, set to false, meaning any request not sent over HTTPS is automatically blocked. On the CompTIA Cloud+ CV0-004 exam, this tests your understanding of how S3 bucket policies enforce encryption in transit, a common security control that can break default SDK configurations. Many AWS SDKs default to HTTP for performance, so administrators must explicitly configure HTTPS endpoints or update the client. A frequent trap is assuming SDKs always use HTTPS; the exam expects you to recognize that a Deny on SecureTransport false directly points to HTTP requests. Memory tip: think “HTTP = Halted Traffic Policy” to recall that a Deny for false SecureTransport stops unencrypted access.
CV0-004 Operations and Support Practice Question
This CV0-004 practice question tests your understanding of operations and support. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Refer to the exhibit. A cloud administrator applies the bucket policy shown. After applying, users report that they can no longer access the prod-backup bucket using their applications. The applications use the AWS SDK with default configuration. What is the most likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The applications are using HTTP instead of HTTPS.
The policy denies requests that do not use HTTPS. Many SDKs default to HTTP, causing the Deny statement to block access.
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 policy does not include an Allow statement.
Why it's wrong here
An Allow statement is not required; the default IAM behavior allows access, and this Deny only overrides for non-HTTPS.
✗
The policy has a syntax error in the condition.
Why it's wrong here
The condition syntax is valid; it correctly uses the Bool condition key.
✓
The applications are using HTTP instead of HTTPS.
Why this is correct
Correct. The policy denies non-HTTPS requests, so if the SDK uses HTTP, access is denied.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
✗
The policy's principal "*" blocks all users.
Why it's wrong here
Principal "*" allows all principals; it only denies under the condition, so it does not block all.
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 CV0-004 ACL questions on filtering logic and placement.
Operations and Support — This question tests Operations and Support — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The applications are using HTTP instead of HTTPS. — The policy denies requests that do not use HTTPS. Many SDKs default to HTTP, causing the Deny statement to block access.
What should I do if I get this CV0-004 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 CV0-004 ACL questions on filtering logic and placement.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Standard ACLs match source addresses.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This CV0-004 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 CV0-004 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.