PAS-C01 Operations and Maintenance Practice Question
An SAP system on AWS is experiencing high latency between the application and database tiers. Both tiers are in the same VPC but in different Availability Zones. What is the most effective way to reduce latency?
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
✓
Move both tiers into the same Availability Zone.
Placing both tiers in the same Availability Zone eliminates cross-AZ data transfer latency. AWS data transfer between AZs incurs additional latency compared to within the same AZ. Option B (adding an Application Load Balancer) would add network hops and potentially increase latency. Option C (increasing bandwidth) does not reduce latency; bandwidth affects throughput, not latency. Option D (AWS Direct Connect) is used for on-premises connectivity, not for communication within AWS.
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 both tiers into the same Availability Zone.
Why this is correct
Same AZ reduces network distance and latency.
- ✗
Add an Application Load Balancer between tiers.
Why it's wrong here
ALB adds a hop and increases latency.
- ✗
Increase the bandwidth of the EC2 instances.
Why it's wrong here
Bandwidth does not directly reduce latency.
- ✗
Enable AWS Direct Connect.
Why it's wrong here
Direct Connect is for hybrid connectivity, not within AWS.
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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.