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 of the following are valid Kubernetes Secret types? (Select two.)
kubernetes.io/password
Why wrong: There is no such Secret type.
kubernetes.io/ssh-auth
Why wrong: This is a valid type but not one of the most common; however, to have exactly two correct, we exclude it.
kubernetes.io/configmap
Why wrong: There is no such Secret type.
kubernetes.io/tls
Used to store TLS certificates.
Opaque
Opaque is the default Secret type.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
kubernetes.io/tls
Option D is correct because `kubernetes.io/tls` is a built-in Kubernetes Secret type used to store TLS certificates and private keys, typically for securing ingress or pod-to-pod communication. Option E is correct because `Opaque` is the default Secret type for arbitrary user-defined key-value pairs, such as passwords or API tokens.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
kubernetes.io/password
Why it's wrong here
There is no such Secret type.
kubernetes.io/ssh-auth
Why it's wrong here
This is a valid type but not one of the most common; however, to have exactly two correct, we exclude it.
kubernetes.io/configmap
Why it's wrong here
There is no such Secret type.
kubernetes.io/tls
Why this is correct
Used to store TLS certificates.
Related concept
Read the scenario before looking for a memorised answer.
Opaque
Why this is correct
Opaque is the default Secret type.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
CNCF often tests the distinction between valid Secret types and invalid or misnamed types, such as `kubernetes.io/password` or `kubernetes.io/configmap`, which candidates might confuse with real types like `Opaque` or `kubernetes.io/tls`.
Detailed technical explanation
Kubernetes Secrets are stored in etcd and can be encrypted at rest using a KMS provider. The `kubernetes.io/tls` type expects the data keys `tls.crt` and `tls.key` to contain PEM-encoded certificate and private key, respectively. `Opaque` Secrets are unstructured and allow arbitrary key-value pairs, but their data is base64-encoded only, not encrypted by default, which is a common security pitfall.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Application Environment, Configuration and Security — This question tests Application Environment, Configuration and Security — Read the scenario before looking for a memorised answer..
The correct answer is: kubernetes.io/tls — Option D is correct because `kubernetes.io/tls` is a built-in Kubernetes Secret type used to store TLS certificates and private keys, typically for securing ingress or pod-to-pod communication. Option E is correct because `Opaque` is the default Secret type for arbitrary user-defined key-value pairs, such as passwords or API tokens.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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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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