SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
Network Topology
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?
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.
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.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.