- A
Modify the instance type while the instance is running.
Why wrong: Instance type cannot be changed while running.
- B
Stop the instance, change the instance type, and start the instance.
Minimal downtime by changing type after stop.
- C
Create an AMI of the r3 instance and launch an r5 instance from it.
Why wrong: Unnecessary, can simply change type after stop.
- D
Launch a new r5 instance and migrate the SAP system.
Why wrong: More downtime and effort.
Question 370 of 1,733
PAS-C01 Technology Practice Question
This PAS-C01 practice question tests your understanding of technology. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 SAP system is running on AWS and needs to be migrated from a current generation instance (r3) to a newer generation (r5). What is the recommended process to minimize downtime?
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.
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
✓
Stop the instance, change the instance type, and start the instance.
Option B is correct because stopping the instance is required to change the instance type for EC2 instances that are not configured for 'Stop/Start' hibernation or Nitro-based instance compatibility. For SAP systems running on current-generation instances (r3), which are Xen-based, a stop is necessary to modify the instance type to r5 (Nitro-based). This process minimizes downtime by allowing the instance to be stopped, changed, and started in a controlled manner, typically taking only a few minutes.
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.
- ✗
Modify the instance type while the instance is running.
Why it's wrong here
Instance type cannot be changed while running.
- ✓
Stop the instance, change the instance type, and start the instance.
Why this is correct
Minimal downtime by changing type after stop.
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.
- ✗
Create an AMI of the r3 instance and launch an r5 instance from it.
Why it's wrong here
Unnecessary, can simply change type after stop.
- ✗
Launch a new r5 instance and migrate the SAP system.
Why it's wrong here
More downtime and effort.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume modifying an instance type while running is always possible (Option A), but AWS only supports this for Nitro-based instances with specific configurations (e.g., instances that support 'Modify Instance Type' without stopping). The r3 instances are Xen-based and require a stop to change the instance type to r5 (Nitro-based). Therefore, stopping the instance is necessary.
Detailed technical explanation
How to think about this question
Under the hood, changing an instance type from r3 (Xen-based) to r5 (Nitro-based) requires stopping the instance because the underlying hypervisor and virtualization platform change, necessitating a full instance stop to reallocate resources. The r5 instance uses the Nitro hypervisor, which provides better performance and supports features like EBS-optimized by default, but the transition requires a stop to update the instance metadata and attach new virtual hardware. In real-world SAP migrations, this process is preferred because it retains the existing EBS volumes, network interfaces, and instance metadata, minimizing reconfiguration effort.
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 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
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: Stop the instance, change the instance type, and start the instance. — Option B is correct because stopping the instance is required to change the instance type for EC2 instances that are not configured for 'Stop/Start' hibernation or Nitro-based instance compatibility. For SAP systems running on current-generation instances (r3), which are Xen-based, a stop is necessary to modify the instance type to r5 (Nitro-based). This process minimizes downtime by allowing the instance to be stopped, changed, and started in a controlled manner, typically taking only a few minutes.
What should I do if I get this PAS-C01 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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Last reviewed: Jul 4, 2026
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