The answer is to port the .NET Framework application to .NET Core/.NET 6+ and run it on Linux. This is correct because Cloud Run only supports Linux containers, and .NET Framework 4.8 is tightly coupled to Windows-specific libraries and the Windows kernel, making direct containerization impossible. By migrating to a cross-platform version like .NET 8 or 9, you eliminate those Windows dependencies and can build a lightweight Linux container that Cloud Run can execute natively. On the Google Professional Cloud Developer exam, this question tests your understanding of Cloud Run’s container constraints and the modernization path for legacy .NET workloads—a common trap is assuming you can simply containerize the existing Framework app with Windows containers, but Cloud Run has no Windows runtime. Remember the key constraint: Cloud Run is Linux-only, so any Windows-specific code must be refactored. Memory tip: “No Windows, no Framework—port to Core for the score.”
PCD Building and testing applications Practice Question
This PCD practice question tests your understanding of building and testing applications. 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 team is migrating a monolithic .NET application to Cloud Run. The application uses .NET Framework 4.8 and depends on Windows-specific libraries. What is the recommended approach to containerize and deploy this application?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Port the application to .NET Core/.NET 6+ and run on Linux
Cloud Run only supports Linux containers, so a .NET Framework 4.8 application that depends on Windows-specific libraries cannot be directly deployed. The recommended approach is to port the application to .NET Core/.NET 6+ (now .NET 8/9), which is cross-platform and can run on Linux containers, enabling deployment to Cloud Run. This aligns with Google's guidance for modernizing legacy .NET applications to leverage serverless platforms.
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.
✗
Deploy the application on Compute Engine with Windows Server
Why it's wrong here
This is a possible alternative but not the recommended approach for Cloud Run; the question asks for deploying to Cloud Run.
✗
Use Cloud Run for Anthos on a Windows node pool
Why it's wrong here
Cloud Run for Anthos also requires Linux containers.
✓
Port the application to .NET Core/.NET 6+ and run on Linux
Why this is correct
This is the recommended approach to make the application compatible with Cloud Run.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use a Windows base image and deploy to Cloud Run
Why it's wrong here
Cloud Run only supports Linux containers.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that Cloud Run can run any container image, including Windows-based ones, but the platform strictly supports only Linux containers, making option D a common trap for candidates unfamiliar with Cloud Run's runtime constraints.
Detailed technical explanation
How to think about this question
Cloud Run executes containers in a sandboxed environment based on gVisor, which only supports Linux syscalls. .NET Framework 4.8 relies on Windows-specific APIs (e.g., System.Drawing, Registry access) that have no Linux equivalent, making direct containerization impossible. Porting to .NET Core/.NET 6+ allows the application to use the cross-platform .NET runtime, which can run on Linux containers and leverage Cloud Run's auto-scaling and pay-per-use model.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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.
Building and testing applications — This question tests Building and testing applications — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Port the application to .NET Core/.NET 6+ and run on Linux — Cloud Run only supports Linux containers, so a .NET Framework 4.8 application that depends on Windows-specific libraries cannot be directly deployed. The recommended approach is to port the application to .NET Core/.NET 6+ (now .NET 8/9), which is cross-platform and can run on Linux containers, enabling deployment to Cloud Run. This aligns with Google's guidance for modernizing legacy .NET applications to leverage serverless platforms.
What should I do if I get this PCD 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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Question Discussion
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