Cloud Digital Leader Practice Question: Google Cloud products, services, and solutions
This GCDL practice question tests your understanding of google cloud products, services, and solutions. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 planning to migrate a legacy monolithic Linux application to Google Cloud. They want to minimize changes initially but have the flexibility to modernize later. Which three approaches should they consider?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
If the application can be containerized, Cloud Run allows running containers without managing infrastructure, with minimal changes, and offers scalability.
B
Replatform to App Engine Flexible Environment
Why wrong: App Engine Flex requires code modifications to fit the platform, which is not minimal change.
C
Use Migrate for Anthos
Migrate for Anthos automates migration of existing VMs to containers on GKE or Compute Engine, with minimal manual changes.
D
Refactor to microservices on GKE
Why wrong: Refactoring is a significant rewrite; not suitable for minimal changes initially.
E
Rehost on Compute Engine using a custom image
Lift and shift to VMs requires minimal changes and is quick.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Cloud Run for stateless containers
Option A is correct because Cloud Run allows you to deploy stateless containers without modifying the application code, minimizing initial changes while providing serverless scalability and the flexibility to modernize later by refactoring into microservices. This approach supports containerized workloads from a legacy monolithic app with minimal lift-and-shift effort.
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 Cloud Run for stateless containers
Why this is correct
If the application can be containerized, Cloud Run allows running containers without managing infrastructure, with minimal changes, and offers scalability.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Replatform to App Engine Flexible Environment
Why it's wrong here
App Engine Flex requires code modifications to fit the platform, which is not minimal change.
✓
Use Migrate for Anthos
Why this is correct
Migrate for Anthos automates migration of existing VMs to containers on GKE or Compute Engine, with minimal manual changes.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Refactor to microservices on GKE
Why it's wrong here
Refactoring is a significant rewrite; not suitable for minimal changes initially.
✓
Rehost on Compute Engine using a custom image
Why this is correct
Lift and shift to VMs requires minimal changes and is quick.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between 'minimal changes' (rehosting or container lift-and-shift) and 'modernization' (refactoring or replatforming), leading candidates to incorrectly select options that require significant code or architecture changes.
Detailed technical explanation
How to think about this question
Cloud Run abstracts away infrastructure management by automatically scaling containers based on HTTP requests, using Knative serving under the hood. It supports any containerized application that listens on a port, making it ideal for legacy apps that can be containerized without code changes, while GKE requires cluster management and pod scheduling overhead. In a real-world scenario, a company might containerize a monolithic PHP app and deploy it on Cloud Run, then gradually extract stateless components into separate services without downtime.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this GCDL question in full detail.
Google Cloud products, services, and solutions — This question tests Google Cloud products, services, and solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Cloud Run for stateless containers — Option A is correct because Cloud Run allows you to deploy stateless containers without modifying the application code, minimizing initial changes while providing serverless scalability and the flexibility to modernize later by refactoring into microservices. This approach supports containerized workloads from a legacy monolithic app with minimal lift-and-shift effort.
What should I do if I get this GCDL 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: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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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