← SOA-C02·Amazon Web Services

Question 42 of 1,546

Deployment, Provisioning, and Automation →mediumMultiple SelectObjective-mapped

Quick Answer

The correct answer involves using both DependsOn and CreationPolicy to control CloudFormation resource ordering. DependsOn ensures that the Auto Scaling group is created only after the ALB and RDS database resources have been initiated, while a CreationPolicy on the RDS database resource forces CloudFormation to wait for a success signal—such as from a cfn-signal script—confirming the database is fully available before proceeding. This combination addresses the exam’s focus on resource dependencies and readiness checks, a common scenario in the AWS Certified SysOps Administrator Associate SOA-C02 where you must distinguish between creation order (DependsOn) and availability verification (CreationPolicy). A frequent trap is assuming DependsOn alone guarantees a resource is functional, but it only ensures the resource exists, not that it’s ready. For the exam, remember: DependsOn orders the launch, CreationPolicy confirms the landing.

SOA-C02 Deployment, Provisioning, and Automation Practice Question

This SOA-C02 practice question tests your understanding of deployment, provisioning, and automation. 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 SysOps administrator is creating an AWS CloudFormation template to deploy a web application. The template will create an Application Load Balancer (ALB), an Auto Scaling group, and an Amazon RDS database. The administrator wants to ensure that the Auto Scaling group is created only after the ALB and the RDS database are fully created and available. Which TWO actions should the administrator take? (Choose two.)

Question 1mediummulti select

Full question →

A
Add a DependsOn attribute to the Auto Scaling group resource that lists only the ALB resource.
Why wrong: This would not wait for the RDS database.
B
Add a DependsOn attribute to the Auto Scaling group resource that lists both the ALB and the RDS database resources.
This ensures the Auto Scaling group is created after both resources are created.
C
Add an UpdatePolicy to the Auto Scaling group resource to wait for a signal.
Why wrong: UpdatePolicy is for updates, not initial creation.
D
Add a CreationPolicy to the RDS database resource to wait for a signal that the database is available.
This ensures CloudFormation waits for the database to be fully available, not just created.
E
Add a CreationPolicy to the Auto Scaling group resource to wait for a signal from the instances.
Why wrong: This is for instances within the group, not for the group resource itself.

Full breakdown with real-world context →

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

✓

Add a DependsOn attribute to the Auto Scaling group resource that lists both the ALB and the RDS database resources.

DependsOn ensures the order of resource creation. For the Auto Scaling group to wait for both the ALB and RDS, it must list both as dependencies. Additionally, a CreationPolicy on the RDS instance can be used to signal when it is fully available (e.g., after the database is created and ready). However, the question asks for two actions; the most direct are using DependsOn on the Auto Scaling group for both resources, and also possibly using a CreationPolicy on the RDS to ensure it is truly available, but since the question says 'fully created and available', the best two are: (1) Add a DependsOn attribute to the Auto Scaling group resource listing both the ALB and RDS resources. (2) Add a CreationPolicy to the RDS instance resource to wait for a signal that indicates it is available. Option A is incomplete. Option B is correct because DependsOn with both resources ensures creation order. Option C is also correct because CreationPolicy on RDS ensures it signals readiness. Note: The question may have a different intended answer; but based on typical exam, DependsOn and CreationPolicy are the standard ways.

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.

✗
Add a DependsOn attribute to the Auto Scaling group resource that lists only the ALB resource.
Why it's wrong here
This would not wait for the RDS database.
✓
Add a DependsOn attribute to the Auto Scaling group resource that lists both the ALB and the RDS database resources.
Why this is correct
This ensures the Auto Scaling group is created after both resources are created.
Related concept
Read the scenario before looking for a memorised answer.
✗
Add an UpdatePolicy to the Auto Scaling group resource to wait for a signal.
Why it's wrong here
UpdatePolicy is for updates, not initial creation.
✓
Add a CreationPolicy to the RDS database resource to wait for a signal that the database is available.
Why this is correct
This ensures CloudFormation waits for the database to be fully available, not just created.
Related concept
Read the scenario before looking for a memorised answer.
✗
Add a CreationPolicy to the Auto Scaling group resource to wait for a signal from the instances.
Why it's wrong here
This is for instances within the group, not for the group resource itself.

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 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 SOA-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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FAQ

Questions learners often ask

What does this SOA-C02 question test?

Deployment, Provisioning, and Automation — This question tests Deployment, Provisioning, and Automation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Add a DependsOn attribute to the Auto Scaling group resource that lists both the ALB and the RDS database resources. — DependsOn ensures the order of resource creation. For the Auto Scaling group to wait for both the ALB and RDS, it must list both as dependencies. Additionally, a CreationPolicy on the RDS instance can be used to signal when it is fully available (e.g., after the database is created and ready). However, the question asks for two actions; the most direct are using DependsOn on the Auto Scaling group for both resources, and also possibly using a CreationPolicy on the RDS to ensure it is truly available, but since the question says 'fully created and available', the best two are: (1) Add a DependsOn attribute to the Auto Scaling group resource listing both the ALB and RDS resources. (2) Add a CreationPolicy to the RDS instance resource to wait for a signal that indicates it is available. Option A is incomplete. Option B is correct because DependsOn with both resources ensures creation order. Option C is also correct because CreationPolicy on RDS ensures it signals readiness. Note: The question may have a different intended answer; but based on typical exam, DependsOn and CreationPolicy are the standard ways.

What should I do if I get this SOA-C02 question wrong?

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

About these practice questions

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Same concept, more angles

1 more ways this is tested on SOA-C02

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. A company uses AWS CloudFormation to deploy a multi-tier application. The administrator wants to ensure that the database layer is fully provisioned and available before the application layer starts. How can this be achieved?

hard

A.Create separate stacks for the database and application layers.
B.Use a CloudFormation creation policy on the application instances.
✓ C.Use the DependsOn attribute on the application layer resources to depend on the database layer.
D.Use a CloudFormation wait condition in the database stack.

Why C: Option D is correct. Using CloudFormation's DependsOn attribute ensures that the database resource is created before the application resource. Option A (wait conditions) is used for external signals, not for resource dependencies. Option B (creation policy) is for signaling from within an instance. Option C (nested stacks) does not inherently order resources across stacks.

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This SOA-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 SOA-C02 exam.