CKAD Application Design and Build Practice Question
Which TWO of the following are valid concurrencyPolicy values for a CronJob?
⚠ Common exam trap
The CKAD exam often tests the exact string values of Kubernetes API fields, and candidates may confuse 'Parallel' or 'Serial' with the valid 'Allow' and 'Forbid' due to familiarity with other job concepts like parallelism.
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
✓
Forbid
In Kubernetes, a CronJob's concurrencyPolicy controls how to handle overlapping job executions. The valid values are Allow (default, allowing concurrent runs) and Forbid (skips new run if previous is still running). Among the options given, the two correct answers are Allow and Forbid. Replace is not a valid concurrencyPolicy value; it is a distractor.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Parallel
Why it's wrong here
Parallel is not a valid concurrency policy value. The valid values are Allow, Forbid, and Replace.
- ✓
Forbid
Why this is correct
Forbid is correct because it is one of the three valid concurrency policies, which prevents concurrent runs by skipping new runs if a previous one is still active.
- ✗
Serial
Why it's wrong here
Serial is not a valid concurrency policy value. The valid values are Allow, Forbid, and Replace.
- ✓
Allow
Why this is correct
Allow is correct because it is one of the three valid concurrency policies, and it is the default, allowing multiple CronJob instances to run concurrently.
- ✗
Replace
Why it's wrong here
Replace is not a valid concurrencyPolicy value.
Go deeper
Related to this question
About these practice questions
Courseiva writes every CKAD question from scratch — 160 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
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.