The answer is to change VolumeSize from 50 to 100 in the BlockDeviceMapping section of the CloudFormation template. This is correct because the BlockDeviceMapping property directly defines the size of the root EBS volume at launch, and increasing the VolumeSize value to 100 allocates the required 100 GB root volume before the EC2 instance starts. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this tests your understanding of how CloudFormation provisions storage for SAP workloads, where root volume size must be specified in the template because it cannot be dynamically resized during instance launch. A common trap is assuming you can modify the template after launch to resize a running instance, but CloudFormation only applies changes during stack updates, not retroactively to existing volumes. Another pitfall is confusing InstanceType or ImageId changes with volume sizing, which have no effect on root volume capacity. Memory tip: think of BlockDeviceMapping as the blueprint for the disk—if you want a bigger root volume, you must draw it bigger in the blueprint before building the server.
PAS-C01 Technology Practice Question
This PAS-C01 practice question tests your understanding of technology. 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.
Refer to the exhibit. A CloudFormation template is used to launch an EC2 instance for SAP. The instance launches but the root volume is only 50 GB. The SAP installation requires at least 100 GB for the root volume. How should the template be modified?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "least"
Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Change VolumeSize from 50 to 100 in the BlockDeviceMapping.
Option A is correct because increasing the VolumeSize to 100 in the BlockDeviceMapping will allocate a 100 GB root volume. Option B is wrong because modifying the template after launch doesn't change the running instance. Option C is wrong because changing InstanceType does not affect volume size. Option D is wrong because changing ImageId changes the AMI, not the volume size.
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.
✓
Change VolumeSize from 50 to 100 in the BlockDeviceMapping.
Why this is correct
Increasing the VolumeSize value will allocate a larger root volume.
Clue confirmation
The clue word "least" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Change the InstanceType to a larger instance.
Why it's wrong here
Instance type does not affect root volume size.
✗
Modify the running instance's root volume size using the AWS Management Console.
Why it's wrong here
The template is used for new launches; the question asks to modify the template.
✗
Change the ImageId to an AMI with a larger root volume.
Why it's wrong here
The AMI may have a smaller root volume; the template overrides it.
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.
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
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which PAS-C01 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.
Technology — This question tests Technology — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Change VolumeSize from 50 to 100 in the BlockDeviceMapping. — Option A is correct because increasing the VolumeSize to 100 in the BlockDeviceMapping will allocate a 100 GB root volume. Option B is wrong because modifying the template after launch doesn't change the running instance. Option C is wrong because changing InstanceType does not affect volume size. Option D is wrong because changing ImageId changes the AMI, not the volume size.
What should I do if I get this PAS-C01 question wrong?
Identify which PAS-C01 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.
Are there clue words in this question I should notice?
Yes — watch for: "least". You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
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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