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.
A developer creates a ServiceAccount 'my-sa' in namespace 'default'. They want to prevent pods from automatically mounting the ServiceAccount token. Which field should be set to false in the pod spec?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
automountServiceAccountToken: false
Option B is correct because setting `automountServiceAccountToken: false` in the pod spec explicitly prevents the automatic mounting of the ServiceAccount token into the pod. This is the standard Kubernetes field for controlling token mounting at the pod level, overriding the default behavior where the token is mounted automatically.
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.
✗
serviceAccountName: my-sa
Why it's wrong here
This specifies which ServiceAccount to use, but does not control automatic mounting.
✓
automountServiceAccountToken: false
Why this is correct
This disables automatic mounting of the service account token.
Related concept
Read the scenario before looking for a memorised answer.
This is invalid syntax; automountServiceAccountToken is a separate field at the pod spec level.
✗
containers:
- automountServiceAccountToken: false
Why it's wrong here
The automountServiceAccountToken field is set at the pod level, not container level.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CNCF often tests the distinction between pod-level and container-level fields, and the trap here is that candidates may incorrectly assume `automountServiceAccountToken` can be set under `containers` (option D) or that specifying `serviceAccountName` alone (option A) is sufficient to control token mounting.
Detailed technical explanation
How to think about this question
Under the hood, the ServiceAccount token is a projected volume mounted at `/var/run/secrets/kubernetes.io/serviceaccount` by default, containing a JWT token, CA certificate, and namespace. Setting `automountServiceAccountToken: false` at the pod level prevents this volume from being injected, which is critical for security in multi-tenant clusters or when pods need to avoid token exposure. This field can also be set at the ServiceAccount level, but the pod-level setting takes precedence.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CKAD question in full detail.
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: automountServiceAccountToken: false — Option B is correct because setting `automountServiceAccountToken: false` in the pod spec explicitly prevents the automatic mounting of the ServiceAccount token into the pod. This is the standard Kubernetes field for controlling token mounting at the pod level, overriding the default behavior where the token is mounted automatically.
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.
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Question Discussion
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