PAS-C01 Technology Practice Question
An SAP application must be highly available across two Availability Zones in a single Region. The SAP Central Services (ASCS) and ERS are to be deployed on EC2 instances. Which AWS service should be used to manage the floating IP address for the 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 failover routing
In an SAP on AWS deployment, the ASCS instance requires a floating IP address for clients to connect to the active instance. Amazon Route 53 with failover routing can manage this by using health checks to automatically update DNS records to point to the secondary ASCS instance in case of failure. This provides a DNS-based failover mechanism for the floating IP. Option A (Network Load Balancer) is incorrect because while an NLB can front-end the ASCS service, it does not manage a floating IP; it provides a static IP but requires a load balancer configuration. Option B (AWS Global Accelerator) is designed for global traffic and not for intra-region floating IP management for SAP ASCS. Option D (Elastic IP address) can be remapped manually but does not provide automatic failover without additional scripting.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Network Load Balancer
Why it's wrong here
NLB can be used but typically for load balancing multiple instances, not a single ASCS.
- ✗
AWS Global Accelerator
Why it's wrong here
Global Accelerator is for global traffic, not intra-Region failover.
- ✓
Amazon Route 53 with failover routing
Why this is correct
Route 53 failover routing can automatically redirect traffic to a healthy IP.
- ✗
Elastic IP address
Why it's wrong here
Elastic IPs require manual remapping for failover, not automatic.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.