This CCSP practice question tests your understanding of cloud application security. Compare every option against the stated constraints before choosing — the best answer satisfies all requirements, not just the most obvious one. 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 cloud security engineer needs to ensure that a containerized application running in a Kubernetes cluster securely stores and rotates database credentials. Which is the most appropriate solution?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a secrets management system integrated with Kubernetes, such as HashiCorp Vault with CSI driver
Option C is correct because HashiCorp Vault integrated with the Kubernetes CSI (Container Storage Interface) driver allows dynamic, short-lived database credentials to be injected into pods as volumes, enabling automatic rotation without application changes. This approach ensures secrets are never stored in the cluster's etcd or exposed in environment variables, aligning with the principle of least privilege and compliance requirements for credential rotation.
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.
✗
Store credentials as environment variables in the pod manifest
Why it's wrong here
Environment variables can be exposed and do not rotate.
✗
Embed credentials in the container image during build
Why it's wrong here
Embedding credentials in images is insecure and not scalable.
✓
Use a secrets management system integrated with Kubernetes, such as HashiCorp Vault with CSI driver
Why this is correct
Vault provides secure storage, dynamic credentials, and rotation.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Kubernetes Secrets without encryption at rest
Why it's wrong here
Unencrypted Secrets lack protection and rotation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
ISC2 often tests the misconception that Kubernetes Secrets are inherently secure because they are base64-encoded, but the trap is that base64 is not encryption, and without encryption at rest or an external secrets manager, they are vulnerable to etcd compromise.
Detailed technical explanation
How to think about this question
The Vault CSI provider mounts secrets as a tmpfs volume, ensuring they are never written to disk and are automatically revoked when the pod terminates. Under the hood, the CSI driver calls Vault's API to generate a unique, time-bound credential (e.g., a database username/password with a TTL) and injects it as a projected volume, allowing the application to read it from a file path. In a real-world scenario, if a database credential is compromised, Vault can revoke it immediately, and the next pod restart will fetch a fresh credential without any application code changes.
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.
Cloud Application Security — This question tests Cloud Application Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use a secrets management system integrated with Kubernetes, such as HashiCorp Vault with CSI driver — Option C is correct because HashiCorp Vault integrated with the Kubernetes CSI (Container Storage Interface) driver allows dynamic, short-lived database credentials to be injected into pods as volumes, enabling automatic rotation without application changes. This approach ensures secrets are never stored in the cluster's etcd or exposed in environment variables, aligning with the principle of least privilege and compliance requirements for credential rotation.
What should I do if I get this CCSP question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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