FC0-U71 Infrastructure Practice Question
A technician is installing RAM in a desktop computer. The motherboard supports dual-channel memory. Which memory configuration will provide the BEST performance?
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
✓
Two 8 GB DDR4 modules in matching slots for dual-channel
Dual-channel memory requires two identical memory modules installed in matching slots to double the memory bandwidth.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
One 8 GB and one 4 GB DDR4 module
Why it's wrong here
Mismatched sizes may disable dual-channel or run in flex mode with reduced performance.
- ✓
Two 8 GB DDR4 modules in matching slots for dual-channel
Why this is correct
Correct configuration for dual-channel operation.
- ✗
Two 8 GB DDR4 modules in the same channel
Why it's wrong here
Placing both on the same channel does not enable dual-channel; they must be on different channels.
- ✗
One 16 GB DDR4 module
Why it's wrong here
Single-channel mode only, not utilizing dual-channel.
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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. A technician is upgrading a desktop computer's memory. Which component would the technician most likely replace to improve system performance using dual-channel architecture?
easy- A.GPU
- B.Storage drive
- C.CPU
- ✓ D.RAM
Why D: Dual-channel memory requires two identical RAM sticks installed in matching slots to increase memory bandwidth. The upgrade involves replacing or adding RAM modules.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.