EX294 Implement advanced Ansible automation Practice Question
This EX294 practice question tests your understanding of implement advanced ansible automation. 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 reports that a role's behavior is not as expected. They set a variable in the playbook's vars section, but the role still uses the value from its vars/main.yml. Which of the following explains this issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
vars defined in roles/vars/main.yml have higher precedence than those in the playbook's vars section
Option B is correct because Ansible variable precedence places role vars (vars/main.yml) above play vars. Option A is false. Option C is true but does not explain the issue. Option D is a workaround but not the explanation.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
vars defined in the playbook have higher precedence than those in roles/vars/main.yml
Why it's wrong here
Incorrect: play vars have lower precedence than role vars.
✗
vars defined in group_vars override both play and role vars
Why it's wrong here
Incorrect: group vars have lower precedence than role vars.
✗
the playbook must use include_vars after the role to override
Why it's wrong here
Incorrect: this is a workaround, not the explanation of the issue.
✓
vars defined in roles/vars/main.yml have higher precedence than those in the playbook's vars section
Why this is correct
Correct: role vars override play vars.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related EX294 NAT questions on configuration and troubleshooting.
Implement advanced Ansible automation — This question tests Implement advanced Ansible automation — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: vars defined in roles/vars/main.yml have higher precedence than those in the playbook's vars section — Option B is correct because Ansible variable precedence places role vars (vars/main.yml) above play vars. Option A is false. Option C is true but does not explain the issue. Option D is a workaround but not the explanation.
What should I do if I get this EX294 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related EX294 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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