- A
Shared file storage (e.g., Amazon EFS or EBS Multi-Attach)
Shared storage ensures data consistency after failover.
- B
A cluster manager such as Pacemaker
Pacemaker manages the failover of ASCS between nodes.
- C
A NAT Gateway for outbound traffic
Why wrong: NAT Gateway is not required for HA; it's for internet access.
- D
An Internet Gateway for inbound traffic
Why wrong: Internet Gateway is for public internet access, not needed for HA.
- E
A Network Load Balancer to distribute traffic to ASCS
NLB provides health checks and routes client requests to the active ASCS instance.
Question 305 of 1,733
PAS-C01 Design of SAP Workloads on AWS Practice Question
This PAS-C01 practice question tests your understanding of design of sap workloads on aws. 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.
An architect is designing a highly available SAP NetWeaver architecture on AWS. The system uses an SAP Central Services (ASCS) instance. Which THREE components are required to achieve high availability for the SAP environment? (Choose THREE.)
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
✓
Shared file storage (e.g., Amazon EFS or EBS Multi-Attach)
A cluster manager like Pacemaker is required to orchestrate failover between the two ASCS nodes. Shared file storage (e.g., Amazon EFS or EBS Multi-Attach) provides a shared file system for /sapmnt and /usr/sap, which must be accessible from both nodes. A Network Load Balancer (NLB) distributes traffic to the active ASCS instance and performs health checks to detect failures. Options C and D are incorrect because a NAT Gateway and Internet Gateway are not required for SAP HA; they are used for outbound/inbound internet connectivity.
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.
- ✓
Shared file storage (e.g., Amazon EFS or EBS Multi-Attach)
Why this is correct
Shared storage ensures data consistency after failover.
Related concept
Static NAT maps one inside address to one outside address.
- ✓
A cluster manager such as Pacemaker
Why this is correct
Pacemaker manages the failover of ASCS between nodes.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
A NAT Gateway for outbound traffic
- ✗
An Internet Gateway for inbound traffic
Why it's wrong here
Internet Gateway is for public internet access, not needed for HA.
- ✓
A Network Load Balancer to distribute traffic to ASCS
Why this is correct
NLB provides health checks and routes client requests to the active ASCS instance.
Related concept
Static NAT maps one inside address to one outside address.
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.
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
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Visual reference
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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.
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Design of SAP Workloads on AWS — This question tests Design of SAP Workloads on AWS — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Shared file storage (e.g., Amazon EFS or EBS Multi-Attach) — A cluster manager like Pacemaker is required to orchestrate failover between the two ASCS nodes. Shared file storage (e.g., Amazon EFS or EBS Multi-Attach) provides a shared file system for /sapmnt and /usr/sap, which must be accessible from both nodes. A Network Load Balancer (NLB) distributes traffic to the active ASCS instance and performs health checks to detect failures. Options C and D are incorrect because a NAT Gateway and Internet Gateway are not required for SAP HA; they are used for outbound/inbound internet connectivity.
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.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
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