The answer is that the Deny statement unexpectedly blocks delete operations because it requires objects to be encrypted with AES256 for all actions, including delete. This occurs because the condition in the Deny statement applies globally to every operation listed, not just write or upload actions, so any delete request on an object lacking AES256 encryption is denied—even though the Allow statement grants s3:DeleteObject permission. This is a classic misconfiguration trap on the Systems Security Certified Practitioner SSCP exam, testing your understanding of how IAM policy evaluation logic works: an explicit Deny always overrides an Allow, and conditions in a Deny can inadvertently restrict operations that don’t involve encryption checks. A common memory tip is “Deny is absolute—if the condition doesn’t match, the action is blocked,” so always verify whether a Deny condition is scoped to specific actions or applied broadly.
SSCP Access Controls Practice Question
This SSCP practice question tests your understanding of access controls. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 security analyst reviews this AWS IAM policy and notices that delete operations on objects in the corporate-bucket are being denied unexpectedly. What is the most likely issue?
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 Deny statement requires objects to be encrypted with AES256 for delete operations
Option A is correct because the Deny statement includes a condition that requires objects to be encrypted with AES256 for all operations, including delete. Since the condition is not limited to specific actions, any delete request on an object that is not encrypted with AES256 will be denied, even if the Allow statement grants s3:DeleteObject permissions. This is a common misconfiguration where encryption requirements inadvertently block operations that do not involve encryption checks.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 Deny statement requires objects to be encrypted with AES256 for delete operations
Why this is correct
The Deny uses a condition that denies delete if the object is NOT encrypted with AES256, effectively requiring encryption for deletion.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The Allow statement is being overridden by the Deny, but the cause is the encryption requirement
Why it's wrong here
This is true as a fact but does not explain why the Deny exists; the root cause is the condition.
✗
The condition on the Deny statement is not matching any objects
Why it's wrong here
The condition is matching objects that are not encrypted with AES256, thus denying those deletions.
✗
The policy has a syntax error in the Condition element
Why it's wrong here
The syntax is valid; no error exists in the JSON or policy language.
Common exam traps
Common exam trap: answer the scenario, not the keyword
ISC2 often tests the nuance that a Deny statement with a condition can block operations that are not logically related to the condition (like delete being blocked by an encryption requirement), causing candidates to overlook that the condition applies to all actions in the Deny statement.
Detailed technical explanation
How to think about this question
AWS IAM policy evaluation is explicit deny by default: any Deny statement that matches the request context overrides any Allow. The condition 's3:x-amz-server-side-encryption' checks the encryption header of the request; for delete operations, the object's encryption state is irrelevant unless the request itself includes an encryption header, which is unusual. In practice, this policy would block delete requests that do not specify AES256 encryption, even though delete does not require encryption, leading to unexpected denials.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Access Controls — This question tests Access Controls — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The Deny statement requires objects to be encrypted with AES256 for delete operations — Option A is correct because the Deny statement includes a condition that requires objects to be encrypted with AES256 for all operations, including delete. Since the condition is not limited to specific actions, any delete request on an object that is not encrypted with AES256 will be denied, even if the Allow statement grants s3:DeleteObject permissions. This is a common misconfiguration where encryption requirements inadvertently block operations that do not involve encryption checks.
What should I do if I get this SSCP question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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?
Read the scenario before looking for a memorised answer.
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Question Discussion
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