The correct answer is that three new resources will be created, and the two existing ones remain unchanged. This is because Terraform’s count increase behavior treats the resource as an ordered list; when you raise the count from 2 to 5, Terraform simply appends three new instances at indices 2, 3, and 4, leaving the original two at indices 0 and 1 untouched. On the HashiCorp Terraform Associate TF-003 exam, this question tests your understanding of how count meta-argument changes affect resource lifecycle—a common trap is assuming Terraform will rebuild everything or perform an in-place update, but count only adds or removes from the end of the list. A reliable memory tip: think of count like adding chairs to a row—you don’t replace the first two chairs, you just pull up three more.
TF-003 Read, generate and modify configuration Practice Question
This TF-003 practice question tests your understanding of read, generate and modify configuration. 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.
An engineer modifies a Terraform configuration by increasing the instance_count for an AWS EC2 resource from 2 to 5. After running terraform plan, which change will be displayed?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Three new resources will be created, two unchanged.
Option A is correct because increasing count adds three new resources while leaving existing ones unchanged. Option B is wrong because it incorrectly predicts deletion and recreation. Option C is wrong because it suggests in-place update, but count changes add/remove resources. Option D is wrong because it wrongly says only one new resource.
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.
✗
One new resource will be created and two modified.
Why it's wrong here
The plan adds exactly three new resources, not one.
✗
Two existing resources will be destroyed and five new created.
Why it's wrong here
Count changes do not destroy existing resources; they only add or remove indices.
✓
Three new resources will be created, two unchanged.
Why this is correct
The plan will show +3 resources (for indices 2,3,4) and ~0 changes for indices 0,1.
Related concept
Read the scenario before looking for a memorised answer.
✗
All five resources will be updated in-place.
Why it's wrong here
Count changes do not cause in-place updates; they create or destroy resources.
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 TF-003 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 TF-003 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.
Read, generate and modify configuration — This question tests Read, generate and modify configuration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Three new resources will be created, two unchanged. — Option A is correct because increasing count adds three new resources while leaving existing ones unchanged. Option B is wrong because it incorrectly predicts deletion and recreation. Option C is wrong because it suggests in-place update, but count changes add/remove resources. Option D is wrong because it wrongly says only one new resource.
What should I do if I get this TF-003 question wrong?
Identify which TF-003 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.
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Question Discussion
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