This EX294 practice question tests your understanding of transform data with filters and plugins. 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.
Consider the task: `- debug: msg={{ item | upper }}` with `loop: "{{ ['a','b'] }}"`. What will be the output?
An error because upper expects a string, not a loop variable.
Why wrong: Incorrect; the loop variable is a string, so upper works.
Two debug messages: 'a' and 'b'
Why wrong: Incorrect; upper filter transforms the strings.
Two debug messages: 'A' and 'B'
Correct; each item is uppercased and printed separately.
One debug message with the list ['A','B']
Why wrong: Incorrect; loop iterates over items, not the list as a whole.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Two debug messages: 'A' and 'B'
Option C is correct because the `upper` filter in Ansible converts each string item in the loop to uppercase. The `loop` directive iterates over the list `['a','b']`, and for each iteration, the `{{ item | upper }}` expression applies the `upper` filter to the current item, resulting in `'A'` and `'B'`. The `debug` module then prints each transformed value as a separate message.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
An error because upper expects a string, not a loop variable.
Why it's wrong here
Incorrect; the loop variable is a string, so upper works.
Two debug messages: 'a' and 'b'
Why it's wrong here
Incorrect; upper filter transforms the strings.
Two debug messages: 'A' and 'B'
Why this is correct
Correct; each item is uppercased and printed separately.
Related concept
Read the scenario before looking for a memorised answer.
One debug message with the list ['A','B']
Why it's wrong here
Incorrect; loop iterates over items, not the list as a whole.
Common exam traps
The trap here is that candidates may overlook the fact that the `upper` filter is applied to each item individually within the loop, leading them to think the output remains lowercase (Option B) or that the filter fails on a loop variable (Option A).
Detailed technical explanation
Under the hood, Ansible's Jinja2 templating engine evaluates `{{ item | upper }}` for each iteration of the loop. The `upper` filter is a Jinja2 built-in that calls Python's `str.upper()` method on the string representation of the value. In a real-world scenario, this pattern is commonly used to normalize user input (e.g., converting hostnames or usernames to uppercase) before using them in conditional statements or configuration templates.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Transform data with filters and plugins — This question tests Transform data with filters and plugins — Read the scenario before looking for a memorised answer..
The correct answer is: Two debug messages: 'A' and 'B' — Option C is correct because the `upper` filter in Ansible converts each string item in the loop to uppercase. The `loop` directive iterates over the list `['a','b']`, and for each iteration, the `{{ item | upper }}` expression applies the `upper` filter to the current item, resulting in `'A'` and `'B'`. The `debug` module then prints each transformed value as a separate message.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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.
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