- A
Use the gcloud CLI to copy files to the bucket.
Why wrong: The gcloud CLI requires installation on the server, which is not allowed per the constraints.
- B
Generate a signed URL and use an HTTP PUT request from the application.
A signed URL enables direct HTTP PUT uploads without any additional software on the client, meeting all requirements.
- C
Mount the bucket using Cloud Storage FUSE.
Why wrong: Cloud Storage FUSE requires installing a FUSE driver on the server, which is not possible.
- D
Deploy a Cloud Function that accepts file uploads and writes to the bucket.
Why wrong: A Cloud Function is an additional service that would need to be deployed and the application would still need to send HTTP requests; it adds unnecessary complexity when a simpler signed URL approach exists.
Upload to Cloud Storage Using Signed URLs from Legacy Apps — Google Professional Cloud Developer Explained
This PCD practice question tests your understanding of integrating google cloud services. 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 developer is integrating a legacy on-premises application with Cloud Storage. The application generates files that must be uploaded to a bucket. The developer cannot install any additional software on the on-premises server. Which approach should the developer use?
Quick Answer
The answer is to generate a signed URL and use an HTTP PUT request from the application. This approach is correct because a signed URL provides time-limited, permissioned access to a specific Cloud Storage object, allowing the legacy app to upload files directly via a standard HTTP request without needing any SDK, library, or additional software installed on the on-premises server. On the Google Professional Cloud Developer exam, this scenario tests your understanding of secure, agentless upload methods for environments with strict installation restrictions; a common trap is assuming the gcloud CLI or Cloud Storage FUSE is available, but both require software that cannot be installed per the prompt. Remember the key constraint: no new software means you must rely on HTTP alone, and signed URLs are the only native Cloud Storage feature that enables this. Memory tip: think “Signed URL = No install, just PUT.”
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
Generate a signed URL and use an HTTP PUT request from the application.
Option B is correct because a signed URL allows the application to upload files directly via HTTP PUT without requiring any additional software installation on the on-premises server. The developer only needs to generate a signed URL (using Cloud Storage client libraries or gcloud CLI on another system) and then make a simple HTTP request from the application. Option A is wrong because the gcloud CLI would need to be installed on the server, which violates the constraint. Option C is wrong because Cloud Storage FUSE requires installing a FUSE driver on the server. Option D is wrong because deploying a Cloud Function introduces extra complexity and still requires the application to send requests to the function, which would need additional logic.
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.
- ✗
Use the gcloud CLI to copy files to the bucket.
Why it's wrong here
The gcloud CLI requires installation on the server, which is not allowed per the constraints.
- ✓
Generate a signed URL and use an HTTP PUT request from the application.
Why this is correct
A signed URL enables direct HTTP PUT uploads without any additional software on the client, meeting all requirements.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Mount the bucket using Cloud Storage FUSE.
Why it's wrong here
Cloud Storage FUSE requires installing a FUSE driver on the server, which is not possible.
- ✗
Deploy a Cloud Function that accepts file uploads and writes to the bucket.
Why it's wrong here
A Cloud Function is an additional service that would need to be deployed and the application would still need to send HTTP requests; it adds unnecessary complexity when a simpler signed URL approach exists.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which PCD 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.
- →
Integrating Google Cloud services — study guide chapter
Learn the concepts, then practise the questions
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FAQ
Questions learners often ask
What does this PCD question test?
Integrating Google Cloud services — This question tests Integrating Google Cloud services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Generate a signed URL and use an HTTP PUT request from the application. — Option B is correct because a signed URL allows the application to upload files directly via HTTP PUT without requiring any additional software installation on the on-premises server. The developer only needs to generate a signed URL (using Cloud Storage client libraries or gcloud CLI on another system) and then make a simple HTTP request from the application. Option A is wrong because the gcloud CLI would need to be installed on the server, which violates the constraint. Option C is wrong because Cloud Storage FUSE requires installing a FUSE driver on the server. Option D is wrong because deploying a Cloud Function introduces extra complexity and still requires the application to send requests to the function, which would need additional logic.
What should I do if I get this PCD question wrong?
Identify which PCD 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.
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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Last reviewed: Jun 24, 2026
This PCD 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 PCD exam.
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