GCP-ADP Data Preparation And Ingestion Practice Question
You need to ingest IoT data into BigQuery. You need to handle messages arriving in millions per second. Which service acts as the buffer?
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
✓
Pub/Sub
Pub/Sub is the only Google Cloud service capable of ingesting millions of messages per second as a globally scalable buffer.
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 SQL
Why it's wrong here
Cloud SQL cannot scale to millions of messages per second.
- ✓
Pub/Sub
Why this is correct
Pub/Sub is designed for massive scale ingestion.
- ✗
Cloud Functions
Why it's wrong here
Functions have concurrency limits.
- ✗
BigQuery Streaming API
Why it's wrong here
The API has rate limits lower than Pub/Sub's throughput capacity.
About these practice questions
Courseiva writes every GCP-ADP question from scratch — 205 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Google Cloud exam blueprint
This GCP-ADP 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 GCP-ADP exam.