Cloud Digital Leader Why cloud technology is transforming business Practice Question
This GCDL practice question tests your understanding of why cloud technology is transforming business. 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.
An engineering team uses the command above to create an instance for a batch data processing job that runs nightly and can tolerate interruptions. What business transformation benefit does using the `--preemptible` flag provide?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Lower cost for fault-tolerant workloads, enabling more experimentation
The `--preemptible` flag creates a preemptible VM instance that can be terminated by Google Cloud at any time, typically after 24 hours, but at a significantly lower cost (up to 60-80% discount). For batch data processing jobs that run nightly and can tolerate interruptions, this cost savings directly enables more experimentation and iterative development because teams can run more jobs or larger datasets for the same budget, accelerating innovation and business transformation.
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.
✓
Lower cost for fault-tolerant workloads, enabling more experimentation
Why this is correct
Cost savings allow businesses to run more experiments with the same budget.
Related concept
Read the scenario before looking for a memorised answer.
✗
Higher reliability for critical applications
Why it's wrong here
Preemptible instances can be terminated at any time, reducing reliability.
✗
Better performance due to dedicated hardware
Why it's wrong here
Preemptible instances use the same hardware; performance is not enhanced.
✗
Enhanced security through automatic patching
Why it's wrong here
Security patching is not a feature of preemptible instances.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that preemptible instances are for reliability or performance, when in fact they are a cost-optimization feature specifically for fault-tolerant, interruptible workloads.
Detailed technical explanation
How to think about this question
Preemptible VMs in Google Cloud are Compute Engine instances that last a maximum of 24 hours and offer no live migration or automatic restart. They are ideal for fault-tolerant, stateless workloads like batch data processing using Apache Spark or Hadoop, where checkpointing and retry logic can handle preemption. The cost savings (typically 60-80% less than standard VMs) allow teams to run more experiments, such as tuning hyperparameters or testing new data pipelines, without worrying about budget constraints.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this GCDL question in full detail.
Why cloud technology is transforming business — This question tests Why cloud technology is transforming business — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Lower cost for fault-tolerant workloads, enabling more experimentation — The `--preemptible` flag creates a preemptible VM instance that can be terminated by Google Cloud at any time, typically after 24 hours, but at a significantly lower cost (up to 60-80% discount). For batch data processing jobs that run nightly and can tolerate interruptions, this cost savings directly enables more experimentation and iterative development because teams can run more jobs or larger datasets for the same budget, accelerating innovation and business transformation.
What should I do if I get this GCDL 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.
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Question Discussion
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