CKA Practice Question: Cluster Architecture, Installation and Configuration
This CKA practice question tests your understanding of cluster architecture, installation and configuration. 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.
Which TWO of the following are valid resources for granting permissions in RBAC?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Role
A is correct because a Role defines a set of permissions (rules) within a specific namespace, making it a valid resource for granting RBAC permissions. It specifies which API operations (verbs like get, list, create) are allowed on which resources (e.g., pods, services) within that namespace.
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.
✓
Role
Why this is correct
A Role defines permissions within a namespace.
Related concept
Read the scenario before looking for a memorised answer.
✗
ServiceAccount
Why it's wrong here
ServiceAccount is an identity, not a permission resource.
✗
ClusterRoleBinding
Why it's wrong here
ClusterRoleBinding binds a ClusterRole to subjects; it is not a permission resource itself.
✓
ClusterRole
Why this is correct
A ClusterRole defines permissions cluster-wide or for non-namespaced resources.
Related concept
Read the scenario before looking for a memorised answer.
✗
RoleBinding
Why it's wrong here
RoleBinding binds a Role to subjects; it is not a resource that grants permissions directly.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse binding resources (RoleBinding, ClusterRoleBinding) with permission-defining resources (Role, ClusterRole), leading them to select bindings as valid answers for granting permissions.
Detailed technical explanation
How to think about this question
Under the hood, RBAC in Kubernetes uses the rbac.authorization.k8s.io API group, where Role and ClusterRole objects contain a rules field with lists of resources, verbs, and API groups. A subtle behavior is that a ClusterRole can be used in a RoleBinding to grant cluster-wide permissions within a specific namespace, but the ClusterRole itself remains a permissions-defining resource regardless of binding scope. In real-world scenarios, you might create a ClusterRole for read-only access to all namespaces and then bind it to a ServiceAccount via a RoleBinding in a single namespace to limit scope.
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: Role — A is correct because a Role defines a set of permissions (rules) within a specific namespace, making it a valid resource for granting RBAC permissions. It specifies which API operations (verbs like get, list, create) are allowed on which resources (e.g., pods, services) within that namespace.
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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