- A
Secrets store data in base64-encoded form, while ConfigMaps store plaintext
Secrets store data as base64-encoded strings, ConfigMaps store plaintext.
- B
Both ConfigMaps and Secrets can be consumed as environment variables or mounted as volumes
Both can be injected into pods via env, envFrom, or volume mounts.
- C
ConfigMaps are immutable and cannot be updated after creation
Why wrong: ConfigMaps can be updated, and pods can see the changes if mounted as volumes (with some propagation delay).
- D
ConfigMaps are suitable for storing sensitive data like passwords
Why wrong: ConfigMaps are for non-sensitive data. Secrets should be used for sensitive data.
- E
Secrets are encrypted at rest by default in Kubernetes
Why wrong: Secrets are not encrypted at rest by default; encryption at rest must be configured.
CKAD Practice Question: Application Environment, Configuration and Security
This CKAD practice question tests your understanding of application environment, configuration and security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which two statements about ConfigMaps and Secrets are correct? (Select TWO.)
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
Secrets store data in base64-encoded form, while ConfigMaps store plaintext
Option A is correct because Secrets store data as base64-encoded strings, which is not encryption but a simple encoding that obscures the data. ConfigMaps store data in plaintext (UTF-8) without any encoding. This distinction is fundamental: base64 encoding is reversible and provides no security, while plaintext is human-readable.
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.
- ✓
Secrets store data in base64-encoded form, while ConfigMaps store plaintext
Why this is correct
Secrets store data as base64-encoded strings, ConfigMaps store plaintext.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Both ConfigMaps and Secrets can be consumed as environment variables or mounted as volumes
Why this is correct
Both can be injected into pods via env, envFrom, or volume mounts.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
ConfigMaps are immutable and cannot be updated after creation
Why it's wrong here
ConfigMaps can be updated, and pods can see the changes if mounted as volumes (with some propagation delay).
- ✗
ConfigMaps are suitable for storing sensitive data like passwords
Why it's wrong here
ConfigMaps are for non-sensitive data. Secrets should be used for sensitive data.
- ✗
Secrets are encrypted at rest by default in Kubernetes
Why it's wrong here
Secrets are not encrypted at rest by default; encryption at rest must be configured.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CNCF often tests the misconception that base64 encoding is a form of encryption, leading candidates to think Secrets are secure by default, or that ConfigMaps are immutable — the trap is assuming default immutability or confusing encoding with encryption.
Detailed technical explanation
How to think about this question
Under the hood, both ConfigMaps and Secrets are stored in etcd as key-value objects. When a Secret is created, the data values are base64-encoded by the API server, but this is not encryption — anyone with access to etcd or the API can decode them. For real security, you must enable encryption at rest using a KMS provider (e.g., AES-CBC with a key from a cloud provider) or use external secrets management tools like HashiCorp Vault. A common real-world scenario is a CI/CD pipeline that updates a ConfigMap to rotate configuration without restarting pods, which works because ConfigMaps are mutable by default.
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 practitioner preparing for the CKAD exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
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.
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Application Environment, Configuration and Security — study guide chapter
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FAQ
Questions learners often ask
What does this CKAD question test?
Application Environment, Configuration and Security — This question tests Application Environment, Configuration and Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Secrets store data in base64-encoded form, while ConfigMaps store plaintext — Option A is correct because Secrets store data as base64-encoded strings, which is not encryption but a simple encoding that obscures the data. ConfigMaps store data in plaintext (UTF-8) without any encoding. This distinction is fundamental: base64 encoding is reversible and provides no security, while plaintext is human-readable.
What should I do if I get this CKAD 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.
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 30, 2026
This CKAD practice question is part of Courseiva's free CNCF 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 CKAD exam.
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