- A
Use server-side encryption with a cloud-managed key (SSE-S3) and restrict access with bucket policies.
Why wrong: Server-side encryption with a cloud-managed key means the cloud provider holds the encryption key and automatically decrypts data for any user who satisfies the bucket policy. If the bucket becomes public, users with read access can retrieve the decrypted data, negating protection. This does not provide defense in depth against accidental public exposure.
- B
Use client-side encryption with a customer-managed key stored in a hardware security module (HSM) and restrict access with IAM roles.
Client-side encryption encrypts the data before it is uploaded, so the cloud provider never sees plaintext. The customer retains sole control of the encryption key in an HSM. Even if the bucket is made publicly accessible, an attacker can only retrieve encrypted ciphertext, which is indecipherable without the key. This provides the strongest defense in depth against accidental public exposure.
- C
Use default encryption with a cloud-managed key (SSE-S3) and enable bucket logging.
Why wrong: Default SSE-S3 encryption is equivalent to server-side encryption with a cloud-managed key. Enabling logging only provides detective capability; it does not prevent data exposure if the bucket is public. The data would be decrypted by the cloud provider for any authorized read request, exposing plaintext to anyone with read access.
- D
Use server-side encryption with a customer-provided key (SSE-C) and require MFA for delete operations on the bucket.
Why wrong: SSE-C requires the client to supply the encryption key for each read request, so an attacker without the key cannot decrypt the data. However, this design relies on server-side encryption, meaning the cloud provider briefly processes the plaintext during upload. More importantly, the MFA requirement only protects against unauthorized deletion, not against unauthorized read access. Client-side encryption is a more robust defense in depth, as it ensures the cloud provider never has access to plaintext at any point.
Quick Answer
The correct answer is client-side encryption with a customer-managed key stored in a hardware security module (HSM), combined with IAM role restrictions. This design provides the strongest defense in depth because client-side encryption ensures data is encrypted on the client before it ever reaches the cloud, so even if a storage bucket is accidentally configured as publicly accessible, the ciphertext remains unreadable without the key held in the HSM. On the Security+ SY0-701 exam, this scenario tests your understanding that server-side encryption alone cannot protect against misconfigured bucket policies or ACLs that allow public read access, making client-side encryption the only way to guarantee data confidentiality regardless of cloud-side permissions. A common trap is assuming server-side encryption with AWS-managed keys is sufficient, but it still leaves data vulnerable if the bucket becomes public. Remember the memory tip: “Encrypt before you send, and the bucket’s openness won’t matter in the end.”
SY0-701 Security Architecture Practice Question
This SY0-701 practice question tests your understanding of security architecture. 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 architect is designing a solution to securely store sensitive customer data in a cloud object storage service. The architect's primary concern is that if the storage bucket is accidentally configured as publicly accessible, the data should still be protected from unauthorized viewing. Which of the following architectural designs provides the strongest defense in depth to meet this concern?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"primary"Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
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
Use client-side encryption with a customer-managed key stored in a hardware security module (HSM) and restrict access with IAM roles.
Option B is correct because client-side encryption ensures data is encrypted before it ever leaves the client, so even if the bucket is accidentally made publicly accessible, the ciphertext remains unreadable without the customer-managed key stored in the HSM. This provides defense in depth by combining encryption at the application layer with IAM role restrictions, which control access at the AWS API level. Server-side encryption alone (as in the other options) only protects data at rest on the server side, leaving it vulnerable if the bucket policy or ACLs are misconfigured to allow public read access.
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.
- ✗
Use server-side encryption with a cloud-managed key (SSE-S3) and restrict access with bucket policies.
Why it's wrong here
Server-side encryption with a cloud-managed key means the cloud provider holds the encryption key and automatically decrypts data for any user who satisfies the bucket policy. If the bucket becomes public, users with read access can retrieve the decrypted data, negating protection. This does not provide defense in depth against accidental public exposure.
- ✓
Use client-side encryption with a customer-managed key stored in a hardware security module (HSM) and restrict access with IAM roles.
Why this is correct
Client-side encryption encrypts the data before it is uploaded, so the cloud provider never sees plaintext. The customer retains sole control of the encryption key in an HSM. Even if the bucket is made publicly accessible, an attacker can only retrieve encrypted ciphertext, which is indecipherable without the key. This provides the strongest defense in depth against accidental public exposure.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use default encryption with a cloud-managed key (SSE-S3) and enable bucket logging.
Why it's wrong here
Default SSE-S3 encryption is equivalent to server-side encryption with a cloud-managed key. Enabling logging only provides detective capability; it does not prevent data exposure if the bucket is public. The data would be decrypted by the cloud provider for any authorized read request, exposing plaintext to anyone with read access.
- ✗
Use server-side encryption with a customer-provided key (SSE-C) and require MFA for delete operations on the bucket.
Why it's wrong here
SSE-C requires the client to supply the encryption key for each read request, so an attacker without the key cannot decrypt the data. However, this design relies on server-side encryption, meaning the cloud provider briefly processes the plaintext during upload. More importantly, the MFA requirement only protects against unauthorized deletion, not against unauthorized read access. Client-side encryption is a more robust defense in depth, as it ensures the cloud provider never has access to plaintext at any point.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume server-side encryption (SSE) alone is sufficient to protect data in a publicly accessible bucket, but they overlook that SSE only protects data at rest on the server side and does not prevent an authorized (or public) user from downloading the encrypted object and then decrypting it using the keys that the server automatically provides to any authenticated requester.
Detailed technical explanation
How to think about this question
Client-side encryption typically uses envelope encryption: the client generates a data encryption key (DEK) to encrypt the data, then encrypts the DEK with a master key stored in an HSM (e.g., AWS CloudHSM or a third-party HSM). The encrypted DEK is stored alongside the ciphertext in the bucket, so even if the bucket is public, an attacker cannot decrypt the data without access to the master key in the HSM. This approach ensures that the cloud provider never has access to the plaintext or the master key, providing a true separation of duties and defense in depth against misconfigurations.
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.
- →
Security Architecture — study guide chapter
Learn the concepts, then practise the questions
- →
Security Architecture practice questions
Targeted practice on this topic area only
- →
All SY0-701 questions
1,152 questions across all exam domains
- →
Security+ SY0-701 study guide
Full concept coverage aligned to exam objectives
- →
SY0-701 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related SY0-701 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
General Security Concepts practice questions
Practise SY0-701 questions linked to General Security Concepts.
Threats, Vulnerabilities, and Mitigations practice questions
Practise SY0-701 questions linked to Threats, Vulnerabilities, and Mitigations.
Security Architecture practice questions
Practise SY0-701 questions linked to Security Architecture.
Security Operations practice questions
Practise SY0-701 questions linked to Security Operations.
Security Program Management and Oversight practice questions
Practise SY0-701 questions linked to Security Program Management and Oversight.
Security+ social engineering questions
Practise SY0-701 questions linked to Security+ social engineering questions.
Security+ cryptography practice questions
Practise SY0-701 questions linked to Security+ cryptography.
Security+ IAM questions
Practise SY0-701 questions linked to Security+ IAM questions.
Security+ risk management questions
Practise SY0-701 questions linked to Security+ risk management questions.
Security+ incident response questions
Practise SY0-701 questions linked to Security+ incident response questions.
Security+ malware questions
Practise SY0-701 questions linked to Security+ malware questions.
Security+ vulnerability management questions
Practise SY0-701 questions linked to Security+ vulnerability management questions.
Practice this exam
Start a free SY0-701 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this SY0-701 question test?
Security Architecture — This question tests Security Architecture — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use client-side encryption with a customer-managed key stored in a hardware security module (HSM) and restrict access with IAM roles. — Option B is correct because client-side encryption ensures data is encrypted before it ever leaves the client, so even if the bucket is accidentally made publicly accessible, the ciphertext remains unreadable without the customer-managed key stored in the HSM. This provides defense in depth by combining encryption at the application layer with IAM role restrictions, which control access at the AWS API level. Server-side encryption alone (as in the other options) only protects data at rest on the server side, leaving it vulnerable if the bucket policy or ACLs are misconfigured to allow public read access.
What should I do if I get this SY0-701 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: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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 →
Last reviewed: Jun 11, 2026
This SY0-701 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 SY0-701 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.