Ansible Role Variable Precedence — Override Defaults with Role Parameters | Red Hat Certified Engineer Explained
This EX294 practice question tests your understanding of manage task execution and roles. 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.
Refer to the exhibit. The administrator defines a default variable 'db_port' in the role's defaults/main.yml. However, the playbook sets 'db_port: 3307' as a role parameter. After running the playbook, what is the value of 'db_port' on the target host?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
3307
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Undefined
Why it's wrong here
The variable is defined in defaults and overridden.
✓
3307
Why this is correct
Role parameters in the playbook have higher precedence than defaults.
Related concept
Read the scenario before looking for a memorised answer.
✗
An error occurs because of conflicting definitions.
Why it's wrong here
Ansible allows overriding defaults with role parameters.
✗
3306
Why it's wrong here
The playbook variable overrides the default.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 EX294 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Manage task execution and roles — This question tests Manage task execution and roles — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 3307
What should I do if I get this EX294 question wrong?
Identify which EX294 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A playbook uses roles with default variables. The administrator needs to override a default variable for a specific role only when that role is used. Which method should be used?
medium
A.Set the variable in the inventory host_vars.
✓ B.Pass the variable as a parameter to the role in the playbook.
C.Set the variable in the role's vars/main.yml.
D.Set the variable in the playbook's vars section.
Why B: When you need to override a default variable for a specific role only when that role is used, the correct method is to pass the variable as a parameter to the role in the playbook using the `vars` keyword within the role declaration. This ensures the override applies exclusively to that role invocation, without affecting other roles or the global playbook scope.
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This EX294 practice question is part of Courseiva's free Red Hat 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 EX294 exam.
Question Discussion
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