This CEH practice question tests your understanding of advanced topics: wireless, cloud, iot, cryptography. 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.
A security team discovers that an S3 bucket configured for static website hosting is exposing sensitive documents. The bucket policy allows public read access. Which AWS misconfiguration is MOST likely present?
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.
The bucket policy allows s3:GetObject for all principals
This grants public read access to all objects.
The bucket versioning is disabled
Why wrong: Versioning unrelated to public access.
The bucket is not using server-side encryption
Why wrong: Encryption doesn't affect accessibility.
The bucket ACL grants write access to authenticated users
Why wrong: Write access would allow modification but not necessarily public read.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The bucket policy allows s3:GetObject for all principals
Public read access to the bucket and objects is the direct cause. Blocking public access would prevent this.
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
For each option: why learners choose it and why it is or isn't the right answer here.
The bucket policy allows s3:GetObject for all principals
Why this is correct
This grants public read access to all objects.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
The bucket versioning is disabled
Why it's wrong here
Versioning unrelated to public access.
The bucket is not using server-side encryption
Why it's wrong here
Encryption doesn't affect accessibility.
The bucket ACL grants write access to authenticated users
Why it's wrong here
Write access would allow modification but not necessarily public read.
Common exam traps
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
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.
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
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
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 CEH ACL questions on filtering logic and placement.
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FAQ
Advanced Topics: Wireless, Cloud, IoT, Cryptography — This question tests Advanced Topics: Wireless, Cloud, IoT, Cryptography — Standard ACLs match source addresses..
The correct answer is: The bucket policy allows s3:GetObject for all principals — Public read access to the bucket and objects is the direct cause. Blocking public access would prevent this.
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 CEH ACL questions on filtering logic and placement.
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Standard ACLs match source addresses.
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Last reviewed: Jun 21, 2026
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