Question 1mediummultiple choice
Full question →Question 640 of 1,005
Quick Answer
The answer is the `automountServiceAccountToken` field set to `true`. This field, when enabled at the pod spec level or inherited from the ServiceAccount, instructs Kubernetes to automatically project the ServiceAccount token into the pod as a volume mount at `/var/run/secrets/kubernetes.io/serviceaccount/token`. This token projection is essential for pods that need to authenticate to the Kubernetes API server, as it provides a signed JWT token for API calls. On the CKA exam, this concept tests your understanding of pod security and service account mechanics; a common trap is assuming token projection is always enabled by default, but it can be explicitly disabled at the ServiceAccount level to override the pod setting. Remember the memory tip: "Auto-mount equals auto-token" — if you see `automountServiceAccountToken: false`, the token is not projected, so the pod cannot authenticate unless you manually mount a token.
CKA Practice Question: Cluster Architecture, Installation and Configuration
This CKA practice question tests your understanding of cluster architecture, installation and configuration. 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.
An administrator wants to use a ServiceAccount token that is mounted into a pod automatically. Which field enables token projection?
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
✓
automountServiceAccountToken: true
Option D is correct because the `automountServiceAccountToken` field, when set to `true` (the default), causes Kubernetes to automatically project the ServiceAccount token into the pod as a volume mount at `/var/run/secrets/kubernetes.io/serviceaccount/token`. This field can be set at the pod spec level or overridden at the ServiceAccount level, enabling token projection for authentication to the Kubernetes API server.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the `automountServiceAccountToken` field with similar-sounding but invalid options like `mountServiceAccountToken` or `serviceAccountToken`, or assume a generic `enableToken` field exists, when Kubernetes uses a specific boolean field with the 'automount' prefix.
Detailed technical explanation
How to think about this question
Under the hood, when `automountServiceAccountToken` is true (default), the kubelet mounts a projected volume containing the token, CA certificate, and namespace file from the ServiceAccount’s secrets. This token is a JWT signed by the API server, used for pod-to-API-server authentication. In Kubernetes 1.24+, the legacy token secret is no longer auto-created; instead, token projection relies on the `TokenRequest` API, which issues time-bound tokens, enhancing security by reducing token exposure.
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 CKA 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
Questions learners often ask
What does this CKA question test?
Cluster Architecture, Installation and Configuration — This question tests Cluster Architecture, Installation and Configuration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: automountServiceAccountToken: true — Option D is correct because the `automountServiceAccountToken` field, when set to `true` (the default), causes Kubernetes to automatically project the ServiceAccount token into the pod as a volume mount at `/var/run/secrets/kubernetes.io/serviceaccount/token`. This field can be set at the pod spec level or overridden at the ServiceAccount level, enabling token projection for authentication to the Kubernetes API server.
What should I do if I get this CKA 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 →
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Last reviewed: Jun 24, 2026
This CKA 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 CKA exam.
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