CKAD Application Design and Build Practice Question
Which of the following is the correct apiVersion for a CronJob in Kubernetes v1.29?
⚠ Common exam trap
The trap here is that candidates may remember older Kubernetes versions where CronJob was still in beta (batch/v1beta1) and fail to update their knowledge to the stable batch/v1, or they might confuse the apiVersion format with a non-existent cronjob/v1.
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
✓
batch/v1
In Kubernetes v1.29, the correct apiVersion for a CronJob is batch/v1, as CronJob has been stable since v1.21. Option D is correct because batch/v1 is the stable API version for CronJob resources in this release.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
v1
Why it's wrong here
The bare apiVersion `v1` refers to the core API group (e.g., Pods, Services, ConfigMaps). CronJob is not a core resource; it belongs to the batch API group, so the server rejects `v1` as the apiVersion for a CronJob manifest. A valid apiVersion must include the API group for resources outside the core group.
- ✗
cronjob/v1
Why it's wrong here
The string `cronjob/v1` is not a valid apiVersion because the format is `<api-group>/<version>`, and `cronjob` is the resource kind, not an API group. The API server interprets the part before the slash as the group name, so this would look for a non-existent group named 'cronjob'. The correct group for CronJob is `batch`.
- ✗
batch/v1beta1
Why it's wrong here
While `batch/v1beta1` was the apiVersion used for CronJob in older Kubernetes releases, it is deprecated and was completely removed in Kubernetes v1.25. On any modern cluster, specifying `batch/v1beta1` returns an error because the API endpoint no longer exists. For Kubernetes v1.21 and later, the stable `batch/v1` is the only appropriate version.
- ✓
batch/v1
Why this is correct
Since Kubernetes v1.21, CronJob is available as a stable API with the apiVersion `batch/v1`. The apiVersion correctly includes the API group `batch` (which also contains Job) and the stable version `v1`, ensuring the manifest is accepted by the API server. This is the recommended and currently supported version for creating CronJob resources.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CKAD 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 CKAD exam.