This CCSP practice question tests your understanding of cloud application security. 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 company develops a microservices application and wants to ensure secrets such as API keys and database credentials are not exposed in container images. Which approach best meets this requirement?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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 service such as HashiCorp Vault to inject secrets at runtime.
Option B is correct because a secrets management service like HashiCorp Vault allows secrets to be dynamically injected into containers at runtime, ensuring they never reside in the image. This approach decouples secrets from the application artifact, adhering to the principle of least privilege and immutable infrastructure. Vault can inject secrets via sidecar containers, init containers, or API calls, preventing exposure in image layers or configuration files.
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.
✗
Hardcode secrets in the application code and obfuscate with encryption.
Why it's wrong here
Hardcoding is never recommended; encryption keys would still be exposed.
✓
Use a secrets management service such as HashiCorp Vault to inject secrets at runtime.
Why this is correct
Secrets are never stored in the image and are dynamically injected.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Pass secrets as environment variables during container deployment.
Why it's wrong here
Environment variables can be read by any process and are visible in container metadata.
✗
Store secrets in a separate configuration file within the image.
Why it's wrong here
Still stores secrets in the image, accessible if image is compromised.
Common exam traps
Common exam trap: answer the scenario, not the keyword
ISC2 often tests the misconception that environment variables are a secure way to pass secrets because they are not in the image, but the trap is that environment variables are still exposed in the container's runtime environment and orchestration metadata, making them vulnerable to leakage via logs, debugging tools, or misconfigured RBAC.
Detailed technical explanation
How to think about this question
Under the hood, HashiCorp Vault uses a secure TLS connection and a token-based authentication system (e.g., Kubernetes service account tokens) to provide short-lived, dynamic secrets such as database credentials with TTLs. In a real-world scenario, a microservice might use Vault's Agent Sidecar Injector to automatically fetch and renew secrets without the application ever knowing the secret value, reducing the blast radius of a compromise. This contrasts with environment variables, which are static and often logged by orchestration tools like Kubernetes in etcd.
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 service such as HashiCorp Vault to inject secrets at runtime. — Option B is correct because a secrets management service like HashiCorp Vault allows secrets to be dynamically injected into containers at runtime, ensuring they never reside in the image. This approach decouples secrets from the application artifact, adhering to the principle of least privilege and immutable infrastructure. Vault can inject secrets via sidecar containers, init containers, or API calls, preventing exposure in image layers or configuration files.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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