DS0-001 Database Planning And Deployment Practice Question
During the testing phase of a database deployment, you discover that the database is not accepting external connections. You have verified that the database service is running. What is the most likely culprit?
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
✓
The host firewall is blocking the database port.
Firewall rules frequently block the default ports (e.g., 3306 for MySQL, 1433 for SQL Server) by default upon OS deployment.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The backup agent is running.
Why it's wrong here
Backup agents typically do not interfere with standard database connection ports.
- ✓
The host firewall is blocking the database port.
Why this is correct
Firewalls are the most common cause of connection failures after verifying the service is running.
- ✗
The database schema is not fully migrated.
Why it's wrong here
An empty schema would still allow a connection, even if no data is present.
- ✗
The database is in Single User mode.
Why it's wrong here
While possible, firewall configuration is a more common initial deployment issue.
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.