- A
Attach the disk to the instance, SSH into the instance, format the disk (if needed), then mount the disk.
This is the correct order because the disk must be attached to the instance before you can SSH in and format it. After formatting, you mount it to a directory for use.
- B
Format the disk, attach the disk to the instance, SSH into the instance, then mount the disk.
Why wrong: This is incorrect because you cannot format a disk that is not yet attached to any instance. The disk must be attached first.
- C
SSH into the instance, attach the disk, format the disk, then mount the disk.
Why wrong: This is incorrect because attaching the disk after SSH does not make the disk available until the attach command completes. However, the main issue is that you should attach before SSH in the sense that attach is a prerequisite; but technically you can SSH first, then attach, but the disk won't be visible until after attach. The order is misleading because format and mount require the disk to be attached, so attach must come before them, but SSH can be done earlier. Common best practice is to attach first to ensure the device is available when you SSH.
- D
Attach the disk, SSH into the instance, mount the disk, then format the disk.
Why wrong: This is incorrect because you cannot mount a disk that has not been formatted with a filesystem. Formatting must occur before mounting.
Ordered Steps to Attach, Format, and Mount a Persistent Disk on Compute Engine
This ACE practice question tests your understanding of ace exam topics. 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.
Order the steps to attach a persistent disk to a running Compute Engine instance and format/mount it.
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
Attach the disk to the instance, SSH into the instance, format the disk (if needed), then mount the disk.
The correct sequence for attaching a persistent disk to a running Compute Engine instance and formatting/mounting it is: first attach the disk to the instance using gcloud or the console, then SSH into the instance, format the disk (e.g., with mkfs) if it is new, and finally mount it to a directory (e.g., using mount). This ensures the disk is available and prepared for use.
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.
- ✓
Attach the disk to the instance, SSH into the instance, format the disk (if needed), then mount the disk.
Why this is correct
This is the correct order because the disk must be attached to the instance before you can SSH in and format it. After formatting, you mount it to a directory for use.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Format the disk, attach the disk to the instance, SSH into the instance, then mount the disk.
Why it's wrong here
This is incorrect because you cannot format a disk that is not yet attached to any instance. The disk must be attached first.
- ✗
SSH into the instance, attach the disk, format the disk, then mount the disk.
Why it's wrong here
This is incorrect because attaching the disk after SSH does not make the disk available until the attach command completes. However, the main issue is that you should attach before SSH in the sense that attach is a prerequisite; but technically you can SSH first, then attach, but the disk won't be visible until after attach. The order is misleading because format and mount require the disk to be attached, so attach must come before them, but SSH can be done earlier. Common best practice is to attach first to ensure the device is available when you SSH.
- ✗
Attach the disk, SSH into the instance, mount the disk, then format the disk.
Why it's wrong here
This is incorrect because you cannot mount a disk that has not been formatted with a filesystem. Formatting must occur before mounting.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
This is incorrect because attaching the disk after SSH does not make the disk available until the attach command completes. However, the main issue is that you should attach before SSH in the sense that attach is a prerequisite; but technically you can SSH first, then attach, but the disk won't be visible until after attach. The order is misleading because format and mount require the disk to be attached, so attach must come before them, but SSH can be done earlier. Common best practice is to attach first to ensure the device is available when you SSH.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Identify which ACE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Questions learners often ask
What does this ACE question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Attach the disk to the instance, SSH into the instance, format the disk (if needed), then mount the disk. — The correct sequence for attaching a persistent disk to a running Compute Engine instance and formatting/mounting it is: first attach the disk to the instance using gcloud or the console, then SSH into the instance, format the disk (e.g., with mkfs) if it is new, and finally mount it to a directory (e.g., using mount). This ensures the disk is available and prepared for use.
What should I do if I get this ACE question wrong?
Identify which ACE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 11, 2026
This ACE 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 ACE exam.
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