- A
The AWS CLI is using a deprecated version
Why wrong: The AWS CLI version is irrelevant here; the error is about an invalid parameter value, not a deprecated CLI version.
- B
The template.yaml file was modified after the command was run
Why wrong: Modifying the template after running the command would not cause the error because CloudFormation uses the template as submitted at stack creation time; changes after submission do not affect the ongoing operation.
- C
The parameter was overridden by a previous stack operation or a different parameter file
Why wrong: While parameter overrides can occur, the specific value 't2.nano' appears in the error message, indicating it was passed directly. For a new stack creation, there is no previous operation to override the value, making this unlikely.
- D
The CLI command had a typo in the parameter value
The error shows 't2.nano', which is not in the allowed list. This directly points to a typo in the command or parameter file where the user inadvertently typed 't2.nano' instead of a valid instance type.
SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
This SAP-C02 practice question tests your understanding of accelerate workload migration and modernization. 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 CloudFormation stack creation command is run with a parameter. The template.yaml includes a parameter declared as follows: Parameters: InstanceTypeParameter: Type: String Default: t2.micro AllowedValues: - t2.micro - t2.small - t2.medium The stack creation fails with the error: "Value (t2.nano) for parameter InstanceTypeParameter is invalid. Must be one of: t2.micro, t2.small, t2.medium". What is the most likely cause?
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.
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
The CLI command had a typo in the parameter value
The error message shows that the value 't2.nano' was passed for the parameter. This value is not in the AllowedValues list. The most direct explanation is that the user made a typo in the CLI command or parameter file, supplying 't2.nano' instead of a valid value like 't2.micro'. While CloudFormation can inherit parameters from previous operations, the specific invalid value 't2.nano' in the error indicates it was provided in the current command, not from an override. Therefore, option D is correct.
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 AWS CLI is using a deprecated version
Why it's wrong here
The AWS CLI version is irrelevant here; the error is about an invalid parameter value, not a deprecated CLI version.
- ✗
The template.yaml file was modified after the command was run
Why it's wrong here
Modifying the template after running the command would not cause the error because CloudFormation uses the template as submitted at stack creation time; changes after submission do not affect the ongoing operation.
- ✗
The parameter was overridden by a previous stack operation or a different parameter file
Why it's wrong here
While parameter overrides can occur, the specific value 't2.nano' appears in the error message, indicating it was passed directly. For a new stack creation, there is no previous operation to override the value, making this unlikely.
- ✓
The CLI command had a typo in the parameter value
Why this is correct
The error shows 't2.nano', which is not in the allowed list. This directly points to a typo in the command or parameter file where the user inadvertently typed 't2.nano' instead of a valid instance type.
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.
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.
Trap categories for this question
Command / output trap
Modifying the template after running the command would not cause the error because CloudFormation uses the template as submitted at stack creation time; changes after submission do not affect the ongoing operation.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which SAP-C02 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.
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Accelerate Workload Migration and Modernization — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Accelerate Workload Migration and Modernization — This question tests Accelerate Workload Migration and Modernization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The CLI command had a typo in the parameter value — The error message shows that the value 't2.nano' was passed for the parameter. This value is not in the AllowedValues list. The most direct explanation is that the user made a typo in the CLI command or parameter file, supplying 't2.nano' instead of a valid value like 't2.micro'. While CloudFormation can inherit parameters from previous operations, the specific invalid value 't2.nano' in the error indicates it was provided in the current command, not from an override. Therefore, option D is correct.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-C02 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.
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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Last reviewed: Jun 20, 2026
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services 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 SAP-C02 exam.
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