The answer is exactly 3 minutes and 47 seconds of compute time. This is correct because Google Cloud Compute Engine uses per-second billing after a mandatory 1-minute minimum, meaning any VM running longer than 60 seconds is charged only for the precise number of seconds it runs, with no rounding up to the next minute. On the Google Cloud Digital Leader exam, this concept tests your understanding of how Google Cloud’s granular billing model differs from competitors that round to the nearest hour or minute—a common trap is assuming the job would be billed for 4 full minutes. Remember the memory tip: “After one minute, every second counts,” so for any job over 60 seconds, the billable time equals the exact runtime down to the second.
Cloud Digital Leader Fundamental cloud concepts Practice Question
This GCDL practice question tests your understanding of fundamental cloud concepts. 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.
Google Cloud bills Compute Engine VMs per second (after a 1-minute minimum). A batch job runs for exactly 3 minutes and 47 seconds. How many minutes does Google Cloud charge for?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Why wrong: Google Cloud bills per second, not per minute. No rounding up to the nearest minute occurs.
B
Exactly 3 minutes and 47 seconds of compute time.
Per-second billing means the charge is for exactly 227 seconds (3 min 47 sec). No per-hour or per-minute rounding inflates the cost.
C
1 hour (traditional cloud billing minimum).
Why wrong: Some legacy cloud pricing models bill per hour, but Google Cloud moved to per-second billing for most services. The 1-hour minimum is not applicable here.
D
5 minutes (rounded up to the nearest 5-minute interval).
Why wrong: Google Cloud does not bill in 5-minute intervals for Compute Engine. Per-second billing is used.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Exactly 3 minutes and 47 seconds of compute time.
Google Cloud Compute Engine bills per second after a 1-minute minimum. Since the job runs for 3 minutes and 47 seconds, the total billable time is exactly 3 minutes and 47 seconds — no rounding up to the nearest minute or any other interval. Option B correctly reflects this per-second billing model.
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.
✗
4 minutes (rounded up to the nearest minute).
Why it's wrong here
Google Cloud bills per second, not per minute. No rounding up to the nearest minute occurs.
✓
Exactly 3 minutes and 47 seconds of compute time.
Why this is correct
Per-second billing means the charge is for exactly 227 seconds (3 min 47 sec). No per-hour or per-minute rounding inflates the cost.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
1 hour (traditional cloud billing minimum).
Why it's wrong here
Some legacy cloud pricing models bill per hour, but Google Cloud moved to per-second billing for most services. The 1-hour minimum is not applicable here.
✗
5 minutes (rounded up to the nearest 5-minute interval).
Why it's wrong here
Google Cloud does not bill in 5-minute intervals for Compute Engine. Per-second billing is used.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that cloud providers always round up to the nearest minute or hour, but Google Cloud's per-second billing after a 1-minute minimum is a specific exception that candidates must recall precisely.
Detailed technical explanation
How to think about this question
Google Cloud Compute Engine uses per-second billing for most VM instances, including preemptible and custom machine types, after a 1-minute minimum charge. This means a VM running for 3 minutes and 47 seconds incurs charges for 227 seconds (1 minute minimum + 167 seconds of per-second billing). This granular billing is enabled by the cloud provider's ability to track resource usage at the second level, contrasting with older models that rounded to full hours or minutes.
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.
Fundamental cloud concepts — This question tests Fundamental cloud concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Exactly 3 minutes and 47 seconds of compute time. — Google Cloud Compute Engine bills per second after a 1-minute minimum. Since the job runs for 3 minutes and 47 seconds, the total billable time is exactly 3 minutes and 47 seconds — no rounding up to the nearest minute or any other interval. Option B correctly reflects this per-second billing model.
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.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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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