The answer is to use HANA scale-out to move services to other nodes, then reboot each node sequentially. This approach minimizes downtime because SAP HANA’s multi-node architecture allows you to gracefully relocate column-store tables and services to remaining healthy nodes before rebooting one node at a time, ensuring the database remains online and operational throughout the patching process. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this scenario tests your understanding of high-availability strategies for scale-out deployments, where the key trap is assuming a full cluster reboot or DNS switch is simpler—both introduce unnecessary risk or connectivity failures. A common memory tip is to think of it as a “rolling reboot relay”: pass the HANA services like a baton from node to node, never dropping the database.
PAS-C01 Operations and Maintenance Practice Question
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.
A company runs SAP on AWS using an SAP HANA multi-node cluster. The operations team needs to apply an OS-level security patch that requires a reboot. How can they 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 the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use HANA scale-out to move services to other nodes, then reboot each node sequentially.
Option B is correct because in a multi-node cluster, nodes can be rebooted one at a time after moving HANA services to other nodes. Option A is incorrect because it causes downtime. Option C is incorrect because patching a clone and switching DNS can cause connectivity issues. Option D is incorrect because it is complex and may not work with HANA.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use AWS Systems Manager Run Command to apply the patch without reboot.
Why it's wrong here
Kernel patches often require reboot; Run Command can't avoid reboot.
✗
Reboot all nodes simultaneously during the maintenance window.
Why it's wrong here
Rebooting all nodes at once causes full downtime.
✓
Use HANA scale-out to move services to other nodes, then reboot each node sequentially.
Why this is correct
This allows zero or minimal downtime by leveraging cluster redundancy.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
Create a new EC2 instance with the patch applied, then update DNS to point to the new instance.
Why it's wrong here
DNS changes take time and may cause session drops; also not suitable for multi-node.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Trap categories for this question
Command / output trap
Kernel patches often require reboot; Run Command can't avoid reboot.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PAS-C01 NAT questions on configuration and troubleshooting.
Operations and Maintenance — This question tests Operations and Maintenance — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Use HANA scale-out to move services to other nodes, then reboot each node sequentially. — Option B is correct because in a multi-node cluster, nodes can be rebooted one at a time after moving HANA services to other nodes. Option A is incorrect because it causes downtime. Option C is incorrect because patching a clone and switching DNS can cause connectivity issues. Option D is incorrect because it is complex and may not work with HANA.
What should I do if I get this PAS-C01 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PAS-C01 NAT questions on configuration and troubleshooting.
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?
Static NAT maps one inside address to one outside address.
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 →
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 using SAP HANA in a multi-node scale-out configuration on AWS. The operations team needs to automate the patching of the operating system on all nodes with minimal downtime. Which approach is most suitable?
hard
A.Stop all HANA nodes, patch the OS on each node, then start them all together.
B.Create new EC2 instances from a patched AMI and terminate the old ones.
C.Use AWS Systems Manager Patch Manager to apply patches to all nodes simultaneously.
✓ D.Use a rolling patching strategy: patch one node at a time after isolating it from the HANA cluster.
Why D: Using a rolling patching strategy with Auto Scaling group or custom scripts that patch one node at a time while ensuring the node is temporarily removed from the HANA cluster minimizes downtime. Option A is correct. Option B is wrong because stopping all nodes causes downtime. Option C is wrong because just using AWS Systems Manager Patch Manager patches all at once without coordination. Option D is wrong because replacing instances from an AMI is more complex and may require data reload.
Last reviewed: Jun 20, 2026
Question Discussion
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This PAS-C01 practice question is part of Courseiva's free Amazon Web Services 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 PAS-C01 exam.
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