PAS-C01 Technology Practice Question
An SAP system on AWS is experiencing high latency between the application server and the database server. Both are in the same VPC but different subnets. What is the most effective way to reduce latency?
⚠ Common exam trap
Many candidates assume increasing instance size or changing subnets will fix latency, but AWS explicitly tests the understanding that physical proximity via placement groups is the only way to guarantee minimal network latency within a single Availability Zone.
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
✓
Place both instances in a placement group in the same Availability Zone.
Placing both the SAP application server and database server in a placement group within the same Availability Zone ensures they are in close physical proximity, often on the same rack or within the same cluster. This minimizes network hops and reduces latency to single-digit microseconds, which is critical for SAP's high-throughput, low-latency communication between application and database layers.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Move the database to a different Availability Zone.
Why it's wrong here
Different AZ increases latency.
- ✗
Use a VPN connection between subnets.
Why it's wrong here
VPN adds latency.
- ✗
Increase the instance size of both servers.
Why it's wrong here
Does not directly reduce network latency.
- ✓
Place both instances in a placement group in the same Availability Zone.
Why this is correct
Placement groups provide low-latency network.
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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.