PDE Ingesting and Processing the Data Practice Question
A data engineer needs to create a Dataflow pipeline that reads from Pub/Sub, applies a Python transformation, and writes to BigQuery. The pipeline should be reusable across environments with different parameters. Which deployment method is most appropriate?
⚠ Common exam trap
It's easy for candidates to confuse Classic Templates with Flex Templates, assuming both support custom code, but Classic Templates are limited to Google-provided templates and cannot run arbitrary Python transformations, making Flex Templates the only correct choice for custom, reusable pipelines.
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
✓
Flex Template
Flex Templates (Option B) are the most appropriate deployment method because they allow you to package a custom Docker image containing your Python transformation code and dependencies, making the pipeline reusable across environments with different runtime parameters. Unlike Classic Templates, Flex Templates support arbitrary pipeline code and can be parameterized at runtime via the Dataflow UI or API, which is essential for a multi-environment deployment strategy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Classic Template
Why it's wrong here
Classic Templates require compiled Java code and are less flexible.
- ✓
Flex Template
Why this is correct
Flex Templates support any SDK (including Python) and allow runtime parameters.
- ✗
Direct pipeline submission with gcloud dataflow jobs run
Why it's wrong here
Not reusable; requires manual submission each time.
- ✗
Cloud Composer to trigger Dataflow jobs
Why it's wrong here
Orchestration is separate; Flex Template is the deployment method.
Go deeper
Related to this question
About these practice questions
This PDE question is part of Courseiva's 890-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PDE 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 PDE exam.