- A
Create a new AMI version, update the Auto Scaling group's launch template, and perform a rolling update.
This approach updates the AMI and replaces instances with minimal downtime.
- B
Stop all instances, apply the patch, create a new AMI, and start instances.
Why wrong: Stopping instances causes downtime.
- C
Use AWS Systems Manager Patch Manager to apply the patch to all running instances.
Why wrong: Patch Manager patches existing instances, but does not update the AMI for future instances.
- D
Create a new AMI, launch new instances manually, and terminate old ones.
Why wrong: Manual process is inefficient and error-prone.
Question 521 of 1,733
How to Update SAP AMI Without Downtime Using Rolling Update
This PAS-C01 practice question tests your understanding of operations and maintenance. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 on AWS uses a custom AMI for its application servers. The operations team needs to update the AMI to include a new security patch. What is the MOST efficient way to update all existing instances without downtime?
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
✓
Create a new AMI version, update the Auto Scaling group's launch template, and perform a rolling update.
Option A is correct because creating a new AMI version, updating the Auto Scaling group's launch template, and performing a rolling update ensures zero downtime by gradually replacing instances with the patched AMI. This is the most efficient method for updating all existing instances without downtime. Option B is wrong because stopping all instances causes downtime. Option C is wrong because Patch Manager patches live instances, but the requirement is to update the AMI for future instances, not just patch running ones. Option D is wrong because manually launching instances is inefficient and not automated.
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.
- ✓
Create a new AMI version, update the Auto Scaling group's launch template, and perform a rolling update.
Why this is correct
This approach updates the AMI and replaces instances with minimal downtime.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Stop all instances, apply the patch, create a new AMI, and start instances.
Why it's wrong here
Stopping instances causes downtime.
- ✗
Use AWS Systems Manager Patch Manager to apply the patch to all running instances.
Why it's wrong here
Patch Manager patches existing instances, but does not update the AMI for future instances.
- ✗
Create a new AMI, launch new instances manually, and terminate old ones.
Why it's wrong here
Manual process is inefficient and error-prone.
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.
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Operations and Maintenance — study guide chapter
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Operations and Maintenance — This question tests Operations and Maintenance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a new AMI version, update the Auto Scaling group's launch template, and perform a rolling update. — Option A is correct because creating a new AMI version, updating the Auto Scaling group's launch template, and performing a rolling update ensures zero downtime by gradually replacing instances with the patched AMI. This is the most efficient method for updating all existing instances without downtime. Option B is wrong because stopping all instances causes downtime. Option C is wrong because Patch Manager patches live instances, but the requirement is to update the AMI for future instances, not just patch running ones. Option D is wrong because manually launching instances is inefficient and not automated.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
2 more ways this is tested on PAS-C01
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company is running SAP on AWS and needs to patch the operating system of multiple SAP application servers. The servers are in an Auto Scaling group behind an Application Load Balancer. What strategy minimizes downtime?
medium- A.Create a new Auto Scaling group with patched instances and shift traffic using Route 53.
- B.Use AWS Systems Manager Patch Manager to patch all instances at once.
- ✓ C.Perform a rolling update by updating the Auto Scaling group's launch configuration with a new AMI.
- D.Stop all instances, apply patches, then start them.
Why C: Option C is correct because a rolling update with a launch template allows replacing instances one at a time, maintaining capacity. Option A is wrong because creating a new Auto Scaling group and shifting traffic using Route 53 is more complex and may cause downtime during the traffic shift. Option B is wrong because patching all instances at once via SSM may cause simultaneous reboots, leading to downtime. Option D is wrong because stopping all instances, applying patches, then starting them causes downtime.
Variation 2. An operations team needs to automate the patching of EC2 instances running SAP applications. The instances are part of an Auto Scaling group. The team wants to apply patches without causing downtime to the SAP system. Which approach should they use?
easy- A.Use AWS Systems Manager Patch Manager with a maintenance window that patches all instances simultaneously
- B.Use AWS CodeDeploy to deploy patches as a new application version
- ✓ C.Use AWS Systems Manager Patch Manager with a maintenance window and configure the Auto Scaling group to perform a rolling update
- D.Use AWS OpsWorks to manage patching, configuring a rolling update
Why C: Option C is correct because AWS Systems Manager Patch Manager can be integrated with an Auto Scaling group to perform a rolling update, which updates instances in batches, ensuring that the SAP application remains available throughout the patching process. This approach minimizes downtime by replacing or updating instances incrementally rather than all at once, which is critical for SAP systems that require high availability.
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Last reviewed: Jun 20, 2026
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