CKAD Practice Question: Application Environment, Configuration and Security
This CKAD practice question tests your understanding of application environment, configuration and security. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
You have created a ServiceAccount named 'my-sa' in namespace 'default'. You want a Pod to use this ServiceAccount. Which Pod spec field is correct?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
serviceAccountName: my-sa
Option B is correct because the `serviceAccountName` field in a Pod spec is the standard way to assign a specific ServiceAccount to a Pod. When this field is set to `my-sa`, the Pod will use the token and permissions associated with that ServiceAccount for API authentication and authorization.
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.
✗
spec.securityContext.serviceAccount: my-sa
Why it's wrong here
Incorrect. ServiceAccount is not part of securityContext; it is a top-level field in the pod spec.
✓
serviceAccountName: my-sa
Why this is correct
Correct. This sets the ServiceAccount for the pod.
Related concept
Read the scenario before looking for a memorised answer.
✗
serviceAccount: my-sa
Why it's wrong here
Incorrect. The 'serviceAccount' field is deprecated and not the recommended way. The correct field is 'serviceAccountName'.
✗
automountServiceAccountToken: false
Why it's wrong here
Incorrect. This disables the automatic mounting of the service account token, but does not specify which ServiceAccount to use.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the deprecated `serviceAccount` field with the current `serviceAccountName` field, or incorrectly assume that `securityContext` can set the ServiceAccount.
Detailed technical explanation
How to think about this question
When a Pod is created with `serviceAccountName`, the kubelet mounts the ServiceAccount's JWT token (mounted at `/var/run/secrets/kubernetes.io/serviceaccount/token`) into the Pod's filesystem. This token is used by the Pod to authenticate to the Kubernetes API server. If `automountServiceAccountToken` is set to `false`, the token is not mounted, but the Pod still runs under the specified ServiceAccount's identity for RBAC purposes.
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 junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
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: serviceAccountName: my-sa — Option B is correct because the `serviceAccountName` field in a Pod spec is the standard way to assign a specific ServiceAccount to a Pod. When this field is set to `my-sa`, the Pod will use the token and permissions associated with that ServiceAccount for API authentication and authorization.
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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