Which of the following could a user employ to maximize module bandwidth when selecting memory...

Comprehensive and Detailed In-Depth Explanation:

Channel configuration (e.g., dual-channel, quad-channel) determines how memory modules communicate with the memory controller. Using matched pairs in dual- or quad-channel setups can significantly increase memory bandwidth, improving performance — especially for gaming and video-intensive tasks.

Option A (Error correction): ECC RAM is used in servers for reliability, not performance or gaming.

Option B (RAM voltage): Affects compatibility and overclocking but not bandwidth.

Option D (Physical size): Refers to module form factor (e.g., DIMM, SO-DIMM) and does not impact bandwidth.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 3.2: Given a scenario, install RAM types.