DS0-001 Data Systems Management Practice Question
What is the primary function of an index in a database?
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
✓
To speed up data retrieval
Indexes are designed to speed up data retrieval by providing a faster lookup mechanism than scanning every row in a table.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
To speed up data retrieval
Why this is correct
Indexes allow the database engine to find data without performing full table scans.
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To enforce data encryption
Why it's wrong here
Encryption is a security feature, not an index function.
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To reduce disk space usage
Why it's wrong here
Indexes increase disk space usage, they do not reduce it.
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To manage user permissions
Why it's wrong here
Permissions are managed via roles and access controls.
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.