- A
Enable autoscaling on the reservation to automatically add slots up to a maximum.
Why wrong: Autoscaling is a feature for on-demand pricing, not flat-rate. Flat-rate reservations have a fixed number of slots.
- B
Purchase committed use discounts to increase the base reservation to 3000 slots.
Why wrong: Committed use discounts require a 1- or 3-year commitment, which is unnecessary for handling occasional bursts.
- C
Change the pricing model to on-demand to allow unlimited slots.
Why wrong: Switching to on-demand changes the cost model and may lead to unpredictable costs. It also does not use the existing flat-rate reservation.
- D
Purchase flex slots during peak hours to add capacity temporarily.
Flex slots are short-term, pay-as-you-go slots that can be added to a reservation for burst capacity, then released.
PDE Maintaining and Automating Data Workloads Practice Question
This PDE practice question tests your understanding of maintaining and automating data workloads. 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.
Your organization has a BigQuery flat-rate reservation with 2000 slots. During peak hours, query performance degrades because concurrent queries exceed the available slots. You want to handle these bursts without changing the base reservation. What should you do?
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
Purchase flex slots during peak hours to add capacity temporarily.
Option D is correct because flex slots allow you to temporarily add capacity to a BigQuery flat-rate reservation without committing to a permanent increase. This handles burst workloads during peak hours by adding slots on demand, and you only pay for the time they are used. The base reservation of 2000 slots remains unchanged, meeting the requirement.
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.
- ✗
Enable autoscaling on the reservation to automatically add slots up to a maximum.
Why it's wrong here
Autoscaling is a feature for on-demand pricing, not flat-rate. Flat-rate reservations have a fixed number of slots.
- ✗
Purchase committed use discounts to increase the base reservation to 3000 slots.
Why it's wrong here
Committed use discounts require a 1- or 3-year commitment, which is unnecessary for handling occasional bursts.
- ✗
Change the pricing model to on-demand to allow unlimited slots.
Why it's wrong here
Switching to on-demand changes the cost model and may lead to unpredictable costs. It also does not use the existing flat-rate reservation.
- ✓
Purchase flex slots during peak hours to add capacity temporarily.
Why this is correct
Flex slots are short-term, pay-as-you-go slots that can be added to a reservation for burst capacity, then released.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between permanent capacity changes (committed use discounts) and temporary capacity additions (flex slots), trapping candidates who confuse autoscaling (which modifies the reservation's behavior) with the requirement to keep the base reservation unchanged.
Detailed technical explanation
How to think about this question
Flex slots are purchased in increments of 100 slots and can be attached to a reservation for a minimum duration of 60 seconds, providing granular burst capacity. Under the hood, flex slots are drawn from the same shared pool as committed slots but are not subject to the 1-year or 3-year commitment, making them ideal for unpredictable spikes. In a real-world scenario, a data engineering team might use flex slots during end-of-month reporting peaks while keeping the base reservation for steady-state workloads.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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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Maintaining and Automating Data Workloads — study guide chapter
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FAQ
Questions learners often ask
What does this PDE question test?
Maintaining and Automating Data Workloads — This question tests Maintaining and Automating Data Workloads — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Purchase flex slots during peak hours to add capacity temporarily. — Option D is correct because flex slots allow you to temporarily add capacity to a BigQuery flat-rate reservation without committing to a permanent increase. This handles burst workloads during peak hours by adding slots on demand, and you only pay for the time they are used. The base reservation of 2000 slots remains unchanged, meeting the requirement.
What should I do if I get this PDE 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
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 2026
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.
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