PAS-C01 Operations and Maintenance Practice Question
An SAP HANA database running on an EC2 instance with EBS volumes experiences high write latency. The instance type is r5.4xlarge. The EBS volumes are gp2. Which change is MOST likely to reduce write 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
✓
Change the EBS volumes to io2 with provisioned IOPS.
Changing from gp2 to io2 EBS volumes with provisioned IOPS provides consistent low-latency performance for high-write workloads like SAP HANA, directly addressing the write latency bottleneck. Option A is incorrect because Amazon EFS is a network file system and introduces additional network latency, making it unsuitable for database write operations. Option B is incorrect because a read replica only improves read throughput and does not affect write latency; writes still occur on the primary instance. Option C is incorrect because the r5 instance is already memory-optimized for SAP HANA; switching to a compute-optimized instance does not resolve the storage-level write latency issue.
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 files to Amazon EFS.
Why it's wrong here
EFS has higher latency than EBS.
- ✗
Add a read replica for the database.
Why it's wrong here
Read replicas do not improve write performance.
- ✗
Change the instance type to a compute-optimized instance.
Why it's wrong here
Instance type change may not address EBS performance.
- ✓
Change the EBS volumes to io2 with provisioned IOPS.
Why this is correct
io2 volumes provide consistent low-latency performance with provisioned IOPS.
Visual reference
Go deeper
Related to this question
About these practice questions
Courseiva writes every PAS-C01 question from scratch — 1,616 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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.