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.
You need to create a Kubernetes ServiceAccount named 'build-bot' and ensure that pods using this ServiceAccount can authenticate to the Kubernetes API using a long-lived token. Which TWO steps are necessary? (Choose TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a ServiceAccount object named 'build-bot'
Option D is correct because creating a ServiceAccount named 'build-bot' is the foundational step; without the ServiceAccount object, no pods can be assigned a service account identity. Option E is correct because a Secret of type 'kubernetes.io/service-account-token' with an annotation referencing the ServiceAccount causes the Kubernetes controller manager to automatically generate and populate a long-lived token, which pods can mount and use to authenticate to the API server.
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.
✗
Create a Secret of type 'Opaque' with the token data
Why it's wrong here
An Opaque secret is not automatically associated with a ServiceAccount.
✗
Run 'kubectl create token build-bot'
Why it's wrong here
This creates a time-limited token, not a long-lived secret.
✗
Use the TokenRequest API to generate a token
Why it's wrong here
TokenRequest generates short-lived tokens.
✓
Create a ServiceAccount object named 'build-bot'
Why this is correct
The ServiceAccount must exist first.
Related concept
Read the scenario before looking for a memorised answer.
✓
Create a Secret with type 'kubernetes.io/service-account-token' and reference the ServiceAccount via annotation
Why this is correct
This creates a long-lived token secret that the ServiceAccount will use.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CNCF often tests the distinction between long-lived tokens (created via the legacy Secret-based mechanism) and short-lived tokens (generated via the TokenRequest API or 'kubectl create token'), leading candidates to incorrectly select options that produce ephemeral credentials.
Detailed technical explanation
How to think about this question
When a Secret of type 'kubernetes.io/service-account-token' is created with the annotation 'kubernetes.io/service-account.name: build-bot', the service account admission controller and token controller automatically generate a JWT token signed by the API server's private key, store it in the Secret's 'token' field, and set the Secret's ownerReference to the ServiceAccount. This token is long-lived (no expiration by default) and is automatically mounted into pods that use the ServiceAccount, enabling API authentication via Bearer token in the Authorization header.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CKA question in full detail.
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: Create a ServiceAccount object named 'build-bot' — Option D is correct because creating a ServiceAccount named 'build-bot' is the foundational step; without the ServiceAccount object, no pods can be assigned a service account identity. Option E is correct because a Secret of type 'kubernetes.io/service-account-token' with an annotation referencing the ServiceAccount causes the Kubernetes controller manager to automatically generate and populate a long-lived token, which pods can mount and use to authenticate to the 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.
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Question Discussion
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