Google PCA Practice Question: Analysing and Optimising Technical and Business Processes
A company wants to use BigQuery with a predictable monthly cost, regardless of query volume. They have a steady state of around 500 concurrent slots. Which pricing model should they choose?
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
✓
Slot reservations (flat-rate)
BigQuery slot reservations (flat-rate) provide a fixed monthly cost based on reserved slots, suitable for predictable workloads. On-demand pricing charges per query and can vary.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Sustained use discounts
Why it's wrong here
Sustained use discounts apply to Compute Engine, not BigQuery.
- ✗
Committed use discounts for BigQuery
Why it's wrong here
CUDs apply to compute resources, not BigQuery pricing.
- ✓
Slot reservations (flat-rate)
Why this is correct
Reservations provide fixed cost based on number of slots, predictable for steady workloads.
- ✗
On-demand pricing
Why it's wrong here
On-demand billing varies with query volume, unpredictable for steady workloads.
Go deeper
Related to this question
Learn chapter
Billing, Budgets, and Cost Management
Key term
CAN
A CAN (Controller Area Network) is a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other without a host computer.
Key term
BigQuery
BigQuery is a fully managed, serverless data warehouse on Google Cloud that lets you run fast SQL queries on massive datasets without managing any infrastructure.
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