Question 240 of 528

Create content collections and execution environments →easyMultiple ChoiceObjective-mapped

Why ansible-navigator Ignores Updated Image

This EX294 practice question tests your understanding of create content collections and execution environments. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 DevOps team maintains an Ansible environment using execution environments. They have been using a local execution environment image named 'custom-ee:latest' built with ansible-builder. Recently, they updated the requirements.yml file to include a new collection from Automation Hub. They rebuilt the execution environment using ansible-builder and pushed it to their private registry as 'registry.internal/custom-ee:1.2'. However, when running ansible-navigator on a control node, it still uses the old local image and does not pull the updated one. The ansible-navigator configuration file (ansible-navigator.yml) specifies:

execution-environment: image: registry.internal/custom-ee:1.2

enabled: true

pull: policy: tag

The control node has no prior local image with that tag. What is the most likely reason the new image is not being used?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

A
The control node does not have network access to the registry, so it cannot pull the image and falls back to the local 'latest' image.
Why wrong: Incorrect: without network access, ansible-navigator would fail with an error, not silently use a different image.
B
An environment variable such as ANSIBLE_NAVIGATOR_EXECUTION_ENVIRONMENT_IMAGE overrides the configuration file, pointing to the old image.
Correct: environment variables take precedence over configuration file settings, causing the old image to be used.
C
The pull policy 'tag' only pulls if the local image tag differs from the registry tag, and since the local image is 'latest', it compares to '1.2' and pulls, but something else prevents it.
Why wrong: Incorrect: the local 'latest' image is not relevant; the configured image tag is '1.2', which is not local, so 'tag' policy should pull it.
D
The image was rebuilt with a different tag than '1.2', so the registry does not have that tag.
Why wrong: Incorrect: the scenario states they pushed it as '1.2', so that tag exists in the registry.

Full breakdown with real-world context →

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

✓

An environment variable such as ANSIBLE_NAVIGATOR_EXECUTION_ENVIRONMENT_IMAGE overrides the configuration file, pointing to the old image.

Option B is correct because environment variables take precedence over configuration file settings in ansible-navigator. If `ANSIBLE_NAVIGATOR_EXECUTION_ENVIRONMENT_IMAGE` is set to the old local image (e.g., `custom-ee:latest`), it overrides the `image` value in `ansible-navigator.yml`, causing the tool to ignore the updated registry image. This is a common misconfiguration when environment variables persist from previous sessions or CI/CD pipelines.

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.

✗
The control node does not have network access to the registry, so it cannot pull the image and falls back to the local 'latest' image.
Why it's wrong here
Incorrect: without network access, ansible-navigator would fail with an error, not silently use a different image.
✓
An environment variable such as ANSIBLE_NAVIGATOR_EXECUTION_ENVIRONMENT_IMAGE overrides the configuration file, pointing to the old image.
Why this is correct
Correct: environment variables take precedence over configuration file settings, causing the old image to be used.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The pull policy 'tag' only pulls if the local image tag differs from the registry tag, and since the local image is 'latest', it compares to '1.2' and pulls, but something else prevents it.
Why it's wrong here
Incorrect: the local 'latest' image is not relevant; the configured image tag is '1.2', which is not local, so 'tag' policy should pull it.
✗
The image was rebuilt with a different tag than '1.2', so the registry does not have that tag.
Why it's wrong here
Incorrect: the scenario states they pushed it as '1.2', so that tag exists in the registry.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Red Hat often tests the precedence of environment variables over configuration files in Ansible tools, leading candidates to incorrectly blame pull policies, registry access, or image tagging instead of recognizing the override.

Trap categories for this question

Scenario analysis trap
Incorrect: the scenario states they pushed it as '1.2', so that tag exists in the registry.

Detailed technical explanation

How to think about this question

Ansible-navigator uses a layered configuration precedence: command-line arguments override environment variables, which override the configuration file (`ansible-navigator.yml`), which override defaults. The environment variable `ANSIBLE_NAVIGATOR_EXECUTION_ENVIRONMENT_IMAGE` directly sets the execution environment image, bypassing the config file. This is documented in the ansible-navigator settings hierarchy and is a frequent source of confusion when debugging image selection issues in CI/CD or shared control nodes.

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.

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FAQ

Questions learners often ask

What does this EX294 question test?

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: An environment variable such as ANSIBLE_NAVIGATOR_EXECUTION_ENVIRONMENT_IMAGE overrides the configuration file, pointing to the old image. — Option B is correct because environment variables take precedence over configuration file settings in ansible-navigator. If `ANSIBLE_NAVIGATOR_EXECUTION_ENVIRONMENT_IMAGE` is set to the old local image (e.g., `custom-ee:latest`), it overrides the `image` value in `ansible-navigator.yml`, causing the tool to ignore the updated registry image. This is a common misconfiguration when environment variables persist from previous sessions or CI/CD pipelines.

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.

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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