mediumMultiple ChoiceObjective-mapped
CV0-004 Practice Question: Deploying a cloud-based application that requires…
A company is deploying a cloud-based application that requires consistent, low-latency access to shared database files. Which storage option should be used for the database files?
⚠ Common exam trap
CompTIA often tests the misconception that NFS is suitable for database workloads because it provides shared access, but the trap is that NFS lacks the low-latency, synchronous write guarantees required for transactional databases, and candidates overlook the performance penalties of network file locking and cache coherency protocols.
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
✓
Block storage volumes attached to the database server
Block storage volumes (e.g., Amazon EBS or Azure Managed Disks) provide consistent, low-latency I/O performance because they are directly attached to the database server via a high-speed network and support protocols like NVMe or SCSI. This allows the database to perform synchronous writes and reads with minimal jitter, which is critical for transactional workloads that require ACID compliance. Unlike shared file systems or object storage, block storage offers the raw disk-level access that database engines (e.g., MySQL, PostgreSQL, SQL Server) expect for their data and log files.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Block storage volumes attached to the database server
Why this is correct
Block storage offers high performance and low latency for random I/O, making it ideal for databases.
- ✗
Network file system (NFS) mount
Why it's wrong here
NFS adds network latency and may not provide the consistent low-latency access required for databases.
- ✗
Object storage (e.g., Amazon S3)
Why it's wrong here
Object storage has higher latency and is not designed for transactional database workloads.
- ✗
Ephemeral instance storage
Why it's wrong here
Ephemeral storage is temporary and data is lost upon instance stop/termination, not suitable for persistent database files.
Go deeper
Related to this question
About these practice questions
This CV0-004 question is part of Courseiva's 977-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam 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 CV0-004 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 CV0-004 exam.