PDE Designing Data Processing Systems Practice Question
A company needs to process high-throughput streaming data with low latency. They are considering Cloud Pub/Sub for ingestion and Cloud Dataflow for processing. However, they are concerned about cost. Which alternative to Cloud Pub/Sub would reduce costs while still meeting the throughput requirements?
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 Pub/Sub Lite
Pub/Sub Lite is a cost-effective alternative for high-throughput streaming when you don't need global availability or some advanced features of Pub/Sub.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cloud Pub/Sub with pull subscriptions
Why it's wrong here
Pull subscriptions don't reduce cost significantly; they just change delivery model.
- ✗
Cloud Tasks
Why it's wrong here
Cloud Tasks is for task orchestration, not high-throughput streaming.
- ✓
Cloud Pub/Sub Lite
Why this is correct
Pub/Sub Lite offers lower cost for high-volume streaming with regional availability.
- ✗
Cloud Pub/Sub with push subscriptions
Why it's wrong here
Push subscriptions also don't inherently reduce cost.
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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.