DS0-001 Database Planning And Deployment Practice Question
A database administrator is evaluating storage subsystems for a mission-critical database. The database uses random I/O patterns for most operations. Which storage performance metric is most critical for this workload?
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
✓
IOPS
IOPS (Input/Output Operations Per Second) is the primary metric for random I/O performance, while throughput is for sequential operations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cache hit ratio
Why it's wrong here
Cache hit ratio is a memory metric, not a storage subsystem metric.
- ✗
Sequential throughput
Why it's wrong here
Throughput is important for backups and reporting, not random transactional I/O.
- ✓
IOPS
Why this is correct
IOPS measure the number of read/write operations per second, vital for random transaction workloads.
- ✗
Latency variation
Why it's wrong here
Latency is important, but IOPS is the capacity-limiting metric for random I/O.
About these practice questions
Courseiva writes every DS0-001 question from scratch — 216 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 and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official CompTIA exam blueprint
This DS0-001 practice question is part of Courseiva's free CompTIA 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 DS0-001 exam.