- A
Amazon Route 53 with DNS failover routing
Route 53 can perform health checks and fail DNS to a standby ASCS in case of primary failure.
- B
AWS Direct Connect
Why wrong: Direct Connect provides private connectivity from on-premises to AWS, not failover routing.
- C
Application Load Balancer (ALB)
Why wrong: ALB can distribute traffic but does not manage SAP ASCS failover; SAP enqueue replication is needed.
- D
Amazon CloudFront
Why wrong: CloudFront is a content delivery network, not suited for SAP application traffic.
Question 1,172 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.
A company is designing a network architecture for SAP S/4HANA on AWS. The architecture must support high availability by distributing application servers across two Availability Zones. Which AWS service can provide automatic failover for the SAP central services (ASCS) instance?
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
✓
Amazon Route 53 with DNS failover routing
Amazon Route 53 with DNS failover routing is correct because SAP ASCS (ABAP SAP Central Services) requires a virtual hostname that clients use to connect. Route 53 can monitor the health of the ASCS instance in the primary Availability Zone and automatically update DNS resolution to point to the standby ASCS instance in the secondary Availability Zone when a failure is detected. This provides the automatic failover needed for SAP central services without requiring a shared IP address across zones.
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.
- ✓
Amazon Route 53 with DNS failover routing
Why this is correct
Route 53 can perform health checks and fail DNS to a standby ASCS in case of primary failure.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Direct Connect
Why it's wrong here
Direct Connect provides private connectivity from on-premises to AWS, not failover routing.
- ✗
Application Load Balancer (ALB)
Why it's wrong here
ALB can distribute traffic but does not manage SAP ASCS failover; SAP enqueue replication is needed.
- ✗
Amazon CloudFront
Why it's wrong here
CloudFront is a content delivery network, not suited for SAP application traffic.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume a load balancer (ALB or NLB) is required for high availability, but SAP ASCS does not support load balancing across multiple active instances—it requires active/passive failover with a single virtual hostname, which DNS failover routing provides.
Detailed technical explanation
How to think about this question
SAP ASCS failover relies on a virtual hostname that is resolved via DNS. Route 53 health checks can be configured to monitor the SAP ASCS instance's health using TCP or HTTP endpoints (e.g., checking the SAP Message Server port 36xx). When a health check fails, Route 53 automatically updates the DNS record to point to the secondary ASCS instance's IP address, with a TTL typically set to 60 seconds or lower to minimize failover time. In real-world deployments, this is often combined with SAP's own enqueue replication to ensure state is preserved during failover.
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
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.
Visual reference
What to study next
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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: Amazon Route 53 with DNS failover routing — Amazon Route 53 with DNS failover routing is correct because SAP ASCS (ABAP SAP Central Services) requires a virtual hostname that clients use to connect. Route 53 can monitor the health of the ASCS instance in the primary Availability Zone and automatically update DNS resolution to point to the standby ASCS instance in the secondary Availability Zone when a failure is detected. This provides the automatic failover needed for SAP central services without requiring a shared IP address across zones.
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.
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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