- A
AWS::EC2::Instance
Why wrong: EC2 instance is needed but not for EIP association.
- B
AWS::EC2::EIP
Creates the Elastic IP.
- C
AWS::EC2::NetworkInterface
Why wrong: Not required for EIP association.
- D
AWS::EC2::Address
Why wrong: Invalid resource type.
- E
AWS::EC2::EIPAssociation
Associates the EIP with the instance.
Question 867 of 1,616
Which CloudFormation Resources to Use for EC2 Elastic IP
This DVA-C02 practice question tests your understanding of development with aws services. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 company is using AWS CloudFormation to manage infrastructure. A developer needs to create a stack that will launch an EC2 instance and associate an Elastic IP address. The Elastic IP must be released when the stack is deleted. Which TWO resources should the developer include in the CloudFormation template? (Choose TWO.)
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
✓
AWS::EC2::EIP
Option B (AWS::EC2::EIP) is correct because it provisions an Elastic IP address that can be associated with an EC2 instance. Option E (AWS::EC2::EIPAssociation) is correct because it explicitly associates the Elastic IP with the instance, and when the stack is deleted, CloudFormation automatically releases the EIP due to the association being removed. Without the association, the EIP remains allocated and incurs charges even after stack deletion.
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.
- ✗
AWS::EC2::Instance
Why it's wrong here
EC2 instance is needed but not for EIP association.
- ✓
AWS::EC2::EIP
Why this is correct
Creates the Elastic IP.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS::EC2::NetworkInterface
Why it's wrong here
Not required for EIP association.
- ✗
AWS::EC2::Address
Why it's wrong here
Invalid resource type.
- ✓
AWS::EC2::EIPAssociation
Why this is correct
Associates the EIP with the instance.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS::EC2::Address (which does not exist) with AWS::EC2::EIP, or they forget that an explicit association resource (AWS::EC2::EIPAssociation) is needed to ensure the EIP is properly released when the stack is deleted, especially when the EIP is associated with an instance's primary network interface.
Detailed technical explanation
How to think about this question
Under the hood, CloudFormation's AWS::EC2::EIP resource allocates an Elastic IP from Amazon's public IPv4 address pool, and the AWS::EC2::EIPAssociation resource creates an association between the EIP and an instance or network interface. When the stack is deleted, CloudFormation deletes the association first (which disassociates the IP), then deletes the EIP resource, triggering the release of the IP back to the pool. If the EIP is associated with an instance via the InstanceId property directly on the EIP resource (without a separate association resource), the release still occurs on deletion, but using a separate EIPAssociation resource is the recommended pattern for clarity and to avoid implicit dependencies.
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.
TExam Day Tips
- 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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Visual reference
What to study next
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS::EC2::EIP — Option B (AWS::EC2::EIP) is correct because it provisions an Elastic IP address that can be associated with an EC2 instance. Option E (AWS::EC2::EIPAssociation) is correct because it explicitly associates the Elastic IP with the instance, and when the stack is deleted, CloudFormation automatically releases the EIP due to the association being removed. Without the association, the EIP remains allocated and incurs charges even after stack deletion.
What should I do if I get this DVA-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This DVA-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 DVA-C02 exam.
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