- A
Vertex AI Pipeline schedule
Why wrong: Scheduling is time-based, not event-driven.
- B
Cloud Build trigger
Cloud Build triggers directly respond to push events and can invoke pipelines.
- C
Cloud Scheduler on a short interval
Why wrong: Polling is inefficient and not event-driven.
- D
Pub/Sub with push subscription to a Cloud Function
Why wrong: This is possible but requires extra setup; Cloud Build is the standard CI/CD trigger.
Question 824 of 1,000
PMLE Automating and Orchestrating ML Pipelines Practice Question
This PMLE practice question tests your understanding of automating and orchestrating ml 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.
An organization wants to trigger a Vertex AI pipeline whenever a new commit is pushed to the main branch of their Cloud Source Repository. The pipeline should retrain and evaluate the model. Which service should they use to detect the push event and start the pipeline?
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
✓
Cloud Build trigger
Cloud Build triggers are designed to automatically invoke a build pipeline in response to events from Cloud Source Repository, such as a push to a specific branch. This allows the organization to directly start a Vertex AI pipeline for retraining and evaluation without additional infrastructure. Cloud Build triggers natively integrate with Cloud Source Repository, making them the simplest and most reliable choice for this event-driven workflow.
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.
- ✗
Vertex AI Pipeline schedule
Why it's wrong here
Scheduling is time-based, not event-driven.
- ✓
Cloud Build trigger
Why this is correct
Cloud Build triggers directly respond to push events and can invoke pipelines.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Cloud Scheduler on a short interval
Why it's wrong here
Polling is inefficient and not event-driven.
- ✗
Pub/Sub with push subscription to a Cloud Function
Why it's wrong here
This is possible but requires extra setup; Cloud Build is the standard CI/CD trigger.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between event-driven triggers (Cloud Build) and time-based schedulers (Cloud Scheduler, Vertex AI Pipeline schedule), leading candidates to mistakenly choose a polling or cron-based option for an event-driven requirement.
Detailed technical explanation
How to think about this question
Cloud Build triggers use a webhook mechanism under the hood, where Cloud Source Repository sends a push event notification to Cloud Build's event listener via Pub/Sub (managed internally). The trigger can be configured with a regex pattern on the branch name (e.g., '^main$') to ensure only pushes to the main branch initiate the pipeline. This event-driven approach ensures near-instantaneous invocation, whereas polling-based methods like Cloud Scheduler would introduce a minimum delay of 1 minute (the smallest interval) and risk missing events if the interval is too long.
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.
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FAQ
Questions learners often ask
What does this PMLE question test?
Automating and Orchestrating ML Pipelines — This question tests Automating and Orchestrating ML Pipelines — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Cloud Build trigger — Cloud Build triggers are designed to automatically invoke a build pipeline in response to events from Cloud Source Repository, such as a push to a specific branch. This allows the organization to directly start a Vertex AI pipeline for retraining and evaluation without additional infrastructure. Cloud Build triggers natively integrate with Cloud Source Repository, making them the simplest and most reliable choice for this event-driven workflow.
What should I do if I get this PMLE 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.
About these practice questions
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Last reviewed: Jul 4, 2026
This PMLE 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 PMLE exam.
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