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Manage and provision cloud infrastructure →hardMultiple ChoiceObjective-mapped

Google PCA Manage and provision cloud infrastructure Practice Question

This PCA practice question tests your understanding of manage and provision cloud infrastructure. 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.

Exhibit

resources:
- name: my-firewall
  type: compute.v1.firewall
  properties:
    network: https://www.googleapis.com/compute/v1/projects/my-project/global/networks/default
    allowed:
    - IPProtocol: tcp
      ports: ['80','443']
    sourceRanges: ['0.0.0.0/0']
- name: my-instance
  type: compute.v1.instance
  properties:
    zone: us-central1-a
    machineType: https://www.googleapis.com/compute/v1/projects/my-project/zones/us-central1-a/machineTypes/n1-standard-1
    networkInterfaces:
    - network: https://www.googleapis.com/compute/v1/projects/my-project/global/networks/default
      accessConfigs:
      - name: External NAT
        type: ONE_TO_ONE_NAT

Refer to the exhibit. A Cloud Deployment Manager deployment fails with the error 'Resource 'my-firewall' already exists'. 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.

Question 1hardmultiple choice
Full question →

Exhibit

resources:
- name: my-firewall
  type: compute.v1.firewall
  properties:
    network: https://www.googleapis.com/compute/v1/projects/my-project/global/networks/default
    allowed:
    - IPProtocol: tcp
      ports: ['80','443']
    sourceRanges: ['0.0.0.0/0']
- name: my-instance
  type: compute.v1.instance
  properties:
    zone: us-central1-a
    machineType: https://www.googleapis.com/compute/v1/projects/my-project/zones/us-central1-a/machineTypes/n1-standard-1
    networkInterfaces:
    - network: https://www.googleapis.com/compute/v1/projects/my-project/global/networks/default
      accessConfigs:
      - name: External NAT
        type: ONE_TO_ONE_NAT

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

✓

A firewall rule with the name 'my-firewall' already exists in the project.

Option C is correct because the error message 'Resource 'my-firewall' already exists' directly indicates that a firewall rule with the exact name 'my-firewall' is already present in the project. Cloud Deployment Manager creates resources by name, and if a resource with the same name exists (even if it was created outside the deployment), the deployment will fail unless the deployment is configured to adopt or manage that existing resource. The error is not about permissions, network references, or missing delete policies—it is a name collision.

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 user lacks IAM permissions to create firewall rules.

    Why it's wrong here

    Permission errors would show 'permission denied' rather than 'already exists'.

  • ✗

    The network reference in the firewall rule is incorrect.

    Why it's wrong here

    An incorrect network would result in a different error.

  • ✓

    A firewall rule with the name 'my-firewall' already exists in the project.

    Why this is correct

    The error clearly indicates the resource already exists.

    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.

  • ✗

    The deployment does not include a 'delete' policy for existing resources.

    Why it's wrong here

    A delete policy is not required and would not cause this error.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Google Cloud often tests the distinction between resource name conflicts and other common errors (permissions, invalid references) to see if candidates can interpret the exact error message rather than guessing based on general troubleshooting.

Trap categories for this question

  • Command / output trap

    Permission errors would show 'permission denied' rather than 'already exists'.

Detailed technical explanation

How to think about this question

Under the hood, Cloud Deployment Manager uses the Google Cloud Resource Manager API to create resources. When a resource name is already in use, the API returns a 409 Conflict HTTP status code, which surfaces as the 'Resource already exists' error. This is distinct from a 403 Forbidden (permissions) or 400 Bad Request (invalid configuration). In real-world scenarios, this often occurs when a previous deployment was deleted without deleting its resources, or when resources are manually created outside of Deployment Manager with the same name.

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.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this PCA question test?

Manage and provision cloud infrastructure — This question tests Manage and provision cloud infrastructure — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: A firewall rule with the name 'my-firewall' already exists in the project. — Option C is correct because the error message 'Resource 'my-firewall' already exists' directly indicates that a firewall rule with the exact name 'my-firewall' is already present in the project. Cloud Deployment Manager creates resources by name, and if a resource with the same name exists (even if it was created outside the deployment), the deployment will fail unless the deployment is configured to adopt or manage that existing resource. The error is not about permissions, network references, or missing delete policies—it is a name collision.

What should I do if I get this PCA question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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 30, 2026

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This PCA practice question is part of Courseiva's free Google Cloud 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 PCA exam.