EX294 Practice Question: Create content collections and execution environments
This EX294 practice question tests your understanding of create content collections and execution environments. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
A developer is building an execution environment using `ansible-builder` and encounters the error: 'Error: Failed to pull base image: manifest for registry.redhat.io/ansible-automation-platform/ansible-builder-rhel8:2.0.0 not found: manifest unknown.' The developer checks the registry and verifies that the image exists with a different tag. Which action should the developer take to resolve the issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Change the tag in `execution-environment.yml` to a valid tag, such as 'latest'.
Option A is correct because the error indicates the specified tag '2.0.0' does not exist in the registry. The developer confirmed the image exists with a different tag, so updating the tag in `execution-environment.yml` to a valid one, such as 'latest', resolves the manifest lookup failure. `ansible-builder` uses this file to define the base image and tag for building the execution environment.
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.
✓
Change the tag in `execution-environment.yml` to a valid tag, such as 'latest'.
Why this is correct
Using a valid tag resolves the 'manifest not found' error.
Related concept
Read the scenario before looking for a memorised answer.
✗
Run `podman login registry.redhat.io` to authenticate.
Why it's wrong here
Authentication is not the issue; the error is a missing manifest for the specific tag.
✗
Modify the `execution-environment.yml` to use a different base image from Docker Hub.
Why it's wrong here
Unnecessarily changing the base image does not address the wrong tag.
✗
Update the container runtime to the latest version.
Why it's wrong here
The container runtime version is not related to missing manifest tags.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse a tag-not-found error with an authentication issue (Option B) or assume a broader infrastructure problem (Option D), when the fix is a straightforward tag correction in the configuration file.
Detailed technical explanation
How to think about this question
Under the hood, `ansible-builder` reads the `execution-environment.yml` file and uses the `base_image` field to pull the container image via Podman or Docker. The manifest is a JSON document listing layers and configuration; a 'manifest unknown' error occurs when the registry has no manifest for the given tag. In real-world scenarios, tags like '2.0.0' may be deprecated or never published, while 'latest' or a specific version like '2.0.1' is available, requiring a simple tag update.
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 EX294 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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Create content collections and execution environments — This question tests Create content collections and execution environments — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Change the tag in `execution-environment.yml` to a valid tag, such as 'latest'. — Option A is correct because the error indicates the specified tag '2.0.0' does not exist in the registry. The developer confirmed the image exists with a different tag, so updating the tag in `execution-environment.yml` to a valid one, such as 'latest', resolves the manifest lookup failure. `ansible-builder` uses this file to define the base image and tag for building the execution environment.
What should I do if I get this EX294 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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