FC0-U71 Tech Concepts and Terminology Practice Question
Which of the following storage technologies uses spinning platters and a mechanical arm to read and write data?
⚠ Common exam trap
A common mix-up: candidates confuse volatile memory (RAM) or firmware with storage technologies, or assuming SSDs also use spinning platters due to their similar form factors.
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
✓
HDD
The correct answer is HDD (Hard Disk Drive). HDDs are electromechanical storage devices that use rapidly spinning magnetic platters and a moving read/write head mounted on an actuator arm to access data. This mechanical design is the defining characteristic of HDDs, distinguishing them from solid-state and volatile memory technologies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
RAM
Why it's wrong here
RAM is volatile semiconductor memory holding running programs and data, with no spinning platters or mechanical arm. It is tempting because RAM is measured in gigabytes like storage, but it is primary memory that loses contents on power loss; the described mechanism belongs to a hard disk drive.
- ✓
HDD
Why this is correct
HDDs store data on rotating magnetic platters read by a moving actuator arm, giving mechanical access. SSDs use flash memory with no moving parts, so the spinning-platter and mechanical-arm description identifies the hard disk drive.
- ✗
Firmware
Why it's wrong here
Firmware is low-level software stored on a chip that initialises hardware, not a storage technology using spinning platters and a mechanical arm. It is tempting because firmware resides on physical media, but it is instructions rather than a rotating magnetic medium, which describes a hard disk drive.
- ✗
SSD
Why it's wrong here
An SSD stores data in NAND flash memory cells with no moving parts, so it lacks the spinning platters and mechanical read/write arm the question describes. It is tempting because SSDs are a mainstream storage technology, but that description applies specifically to magnetic hard disk drives.
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About these practice questions
This FC0-U71 question is part of Courseiva's 988-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 →
Same concept, more angles
1 more way this is tested on FC0-U71
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which of the following storage types uses spinning platters to read and write data?
easy- A.SSD
- B.RAM
- ✓ C.HDD
- D.Cache
Why C: HDDs (Hard Disk Drives) use spinning magnetic platters, while SSDs use flash memory.
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
This FC0-U71 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 FC0-U71 exam.