FC0-U71 Infrastructure Practice Question
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?
⚠ Common exam trap
The trap is that candidates may think any upgrade improves performance, but the question specifically mentions dual-channel architecture, which is a RAM feature, not a CPU or GPU feature.
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
✓
RAM
RAM is correct because dual-channel architecture requires installing memory modules in matched pairs in specific slots on the motherboard, which doubles the memory bandwidth. Upgrading RAM by adding a second matching module enables dual-channel operation, improving system performance for memory-intensive tasks. The question asks which component to replace to improve performance using dual-channel architecture, and RAM is the only component that directly relates to dual-channel memory.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
GPU
Why it's wrong here
A GPU handles graphics rendering and does not participate in the memory controller's dual-channel interleaving, so replacing it cannot improve memory bandwidth. GPUs are the correct upgrade for gaming or graphical workload performance. Dual-channel gains come from installing matched memory modules in paired slots.
- ✗
Storage drive
Why it's wrong here
A storage drive affects disk read and write throughput, not the memory controller's channel interleaving, so it cannot enable dual-channel operation. Storage drives are correct when the goal is faster boot times or file access. Dual-channel bandwidth requires matched RAM modules in paired slots.
- ✗
CPU
Why it's wrong here
A CPU executes instructions and its memory controller supports channels, but replacing it does not itself create dual-channel operation; the installed RAM modules and slot population do. CPUs are correct when upgrading processing capability. Dual-channel gains require matched memory modules in paired slots.
- ✓
RAM
Why this is correct
Dual-channel architecture requires matched memory modules installed in paired slots, so adding or replacing RAM in the correct slot pairs doubles the memory bus width. The technician therefore replaces RAM, not the CPU or storage.
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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.