This CKA practice question tests your understanding of workloads and scheduling. 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.
Which of the following creates a ConfigMap named 'my-config' from a file 'app.properties'?
Option B is correct because `kubectl create configmap my-config --from-file=app.properties` reads the file `app.properties` and creates a ConfigMap with a single key-value pair, where the key is the filename (app.properties) and the value is the entire file content. This is the standard way to create a ConfigMap from a file in Kubernetes.
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.
--from-env-file parses env-style file, not a single key-value file.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse `--from-file` (which imports a file as a single key-value pair) with `--from-env-file` (which imports a file as multiple key-value pairs, one per line), leading them to choose option D when the file is not in env-file format.
Detailed technical explanation
How to think about this question
Under the hood, `--from-file` reads the entire file content as a single value, using the filename (without path) as the key, while `--from-env-file` expects each line to be in `KEY=VALUE` format and ignores blank lines and comments (lines starting with `#`). A real-world scenario: if you have a configuration file like `nginx.conf` that is not in key=value format, you must use `--from-file` to preserve its structure; using `--from-env-file` would misinterpret the content and likely fail.
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.
Workloads and Scheduling — This question tests Workloads and Scheduling — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: kubectl create configmap my-config --from-file=app.properties — Option B is correct because `kubectl create configmap my-config --from-file=app.properties` reads the file `app.properties` and creates a ConfigMap with a single key-value pair, where the key is the filename (app.properties) and the value is the entire file content. This is the standard way to create a ConfigMap from a file in Kubernetes.
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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