PAS-C01 Migration Practice Question
A company is migrating an SAP system to AWS and needs to retain the same hostname for the SAP application server after migration. Which configuration should the company use?
⚠ Common exam trap
Many exam-takers confuse Elastic IPs with hostname persistence, assuming a static public IP is sufficient, but SAP systems rely on internal hostname resolution via DNS or /etc/hosts, not public IPs, and a private hosted zone provides the necessary centralized, scalable DNS solution within the VPC.
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
✓
Create a private hosted zone in Amazon Route 53 with an A record
A private hosted zone in Amazon Route 53 allows you to create an A record that maps a custom hostname to the private IP address of an EC2 instance. This ensures that the SAP application server retains the same hostname after migration, as DNS resolution within the VPC will consistently return the instance's private IP, regardless of instance changes or restarts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Assign an Elastic IP to the EC2 instance and update the /etc/hosts file
Why it's wrong here
Hostname not resolved via DNS.
- ✓
Create a private hosted zone in Amazon Route 53 with an A record
Why this is correct
Provides internal DNS resolution within VPC.
- ✗
Create a CNAME record in a public hosted zone pointing to the EC2 instance
Why it's wrong here
Public DNS, not private.
- ✗
Use a public hosted zone in Route 53 with an A record
Why it's wrong here
Public DNS, not private.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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