- A
AWS Global Accelerator
Why wrong: Global Accelerator provides static IPs but is for global traffic, not typically for SAP HANA HA.
- B
Amazon Route 53
Route 53 can provide DNS failover with health checks.
- C
Elastic IP addresses
Why wrong: Elastic IPs require manual reassignment, not automatic failover.
- D
VPC Peering
Why wrong: VPC Peering connects VPCs, not for floating IPs.
Question 315 of 1,733
Floating IP for SAP HANA Failover with Route 53
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 runs SAP S/4HANA on AWS. The system is critical and requires high availability. The database is SAP HANA running on two EC2 instances in a cluster. The company wants to ensure that the secondary instance can take over quickly in case of primary failure. Which AWS service should be used to implement a floating IP address that can be moved between the instances?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"primary"Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
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
Amazon Route 53 can be configured with a DNS failover routing policy using health checks to automatically update DNS records, effectively moving a floating IP address (via a DNS name) from the primary to the secondary SAP HANA instance. This allows clients to reconnect to the same DNS name, which resolves to the healthy instance's IP address after failover, meeting the requirement for quick takeover without manual intervention.
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.
- ✗
AWS Global Accelerator
Why it's wrong here
Global Accelerator provides static IPs but is for global traffic, not typically for SAP HANA HA.
- ✓
Amazon Route 53
Why this is correct
Route 53 can provide DNS failover with health checks.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Elastic IP addresses
Why it's wrong here
Elastic IPs require manual reassignment, not automatic failover.
- ✗
VPC Peering
Why it's wrong here
VPC Peering connects VPCs, not for floating IPs.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Elastic IP addresses as the natural solution for floating IPs in AWS, but the question specifically requires a service that can move a floating IP between instances automatically based on health, which Route 53's DNS failover provides, whereas Elastic IPs require manual or scripted reassociation and do not natively integrate with health checks.
Detailed technical explanation
How to think about this question
In SAP HANA cluster setups, a floating IP is typically managed by cluster software (e.g., Pacemaker) using a secondary private IP address that is reassigned via AWS API calls or a custom script. However, Route 53 DNS failover with a short TTL (e.g., 5 seconds) can achieve sub-minute failover by updating the DNS record to point to the secondary instance's IP, leveraging health checks to detect primary failure. This approach avoids the complexity of managing secondary private IPs and works across Availability Zones, but it requires clients to support DNS caching and re-resolution.
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
Quick reference
Common DNS Record Types
| Record | Purpose | Example |
|---|---|---|
| A | IPv4 address mapping | example.com → 93.184.216.34 |
| AAAA | IPv6 address mapping | example.com → 2606:2800::1 |
| CNAME | Alias to another hostname | www → example.com |
| MX | Mail server for domain | example.com → mail.example.com (priority 10) |
| TXT | Text data (SPF, DKIM, verification) | v=spf1 include:_spf.example.com ~all |
| NS | Authoritative name servers | example.com NS ns1.example.com |
| PTR | Reverse DNS (IP → hostname) | 34.216.184.93.in-addr.arpa → example.com |
| SOA | Zone authority record | Primary NS, admin email, serial, TTL defaults |
What to study next
Got this wrong? Here's your next step.
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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 — Amazon Route 53 can be configured with a DNS failover routing policy using health checks to automatically update DNS records, effectively moving a floating IP address (via a DNS name) from the primary to the secondary SAP HANA instance. This allows clients to reconnect to the same DNS name, which resolves to the healthy instance's IP address after failover, meeting the requirement for quick takeover without manual intervention.
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: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
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
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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