The answer is a 30-minute wait phase in the canary strategy, combined with a 10% traffic phase and an automatic promotion rule. This works because Cloud Deploy’s canary strategy lets you define sequential phases where traffic is shifted incrementally; the 10% phase sends only a fraction of users to the new version, while the 30-minute wait phase acts as a stabilization window to monitor for errors before the automatic promotion triggers the full rollout. On the Google Professional Cloud DevOps Engineer exam, this tests your understanding of Cloud Deploy’s rollout strategies and how to configure phased traffic shifts with automated gates—a common trap is confusing manual approval with automatic promotion, but the key here is that the wait phase is time-based, not human-dependent. Remember the memory tip: “10% for 30, then auto 100” to recall that the canary phase size, the wait duration, and the promotion trigger are the three required features.
PCDOE Building and implementing CI/CD pipelines Practice Question
This PCDOE practice question tests your understanding of building and implementing ci/cd pipelines. 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 uses Cloud Deploy to manage rollouts to GKE. They need to implement a deployment strategy where a new version receives 10% of traffic for 30 minutes, then automatically rolls forward to 100% if no issues are detected. Which THREE Cloud Deploy features are required? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A canary deployment strategy with a 10% phase.
Option A is correct because a canary deployment strategy in Cloud Deploy allows you to define phases that gradually shift traffic to a new revision. A 10% phase is the first step in this strategy, ensuring only a small subset of users experience the new version initially, which aligns with the requirement to start with 10% traffic.
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.
✓
A canary deployment strategy with a 10% phase.
Why this is correct
Canary enables traffic splitting.
Related concept
Read the scenario before looking for a memorised answer.
✓
An automated promotion policy that promotes after the wait phase.
Why this is correct
Automated promotion removes the need for manual step.
Related concept
Read the scenario before looking for a memorised answer.
✗
A manual approval gate before the 100% phase.
Why it's wrong here
Manual approval would block automatic promotion.
✗
An Istio VirtualService configuration for traffic splitting.
Why it's wrong here
Cloud Deploy uses GKE Service Manifest; Istio is not required.
✓
A 30-minute wait phase in the canary strategy.
Why this is correct
Wait phase provides the observation window.
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 required Cloud Deploy features and optional external tools like Istio, leading candidates to mistakenly include Istio-specific configurations when Cloud Deploy's native traffic management suffices.
Detailed technical explanation
How to think about this question
Cloud Deploy's canary strategy uses a 'phases' array in the delivery pipeline definition, where each phase specifies a percentage of traffic and an optional wait duration. The 30-minute wait phase is implemented using the 'wait' parameter in the phase configuration, which pauses the rollout for the specified duration before automatically promoting to the next phase if no failures are detected. Automated promotion policies are defined in the 'strategy' block of the delivery pipeline, enabling seamless progression without manual gates.
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 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Building and implementing CI/CD pipelines — This question tests Building and implementing CI/CD pipelines — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A canary deployment strategy with a 10% phase. — Option A is correct because a canary deployment strategy in Cloud Deploy allows you to define phases that gradually shift traffic to a new revision. A 10% phase is the first step in this strategy, ensuring only a small subset of users experience the new version initially, which aligns with the requirement to start with 10% traffic.
What should I do if I get this PCDOE 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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