One of the key environmental benefits of using virtualization is the reduction in physical space requirements. Virtualization allows multiple virtual machines to run on a single physical server, reducing the need for multiple physical servers. This consolidation leads to fewer physical machines, saving space in data centers and reducing the overall physical footprint.
A . Greater energy consumption is incorrect as virtualization typically leads to reduced energy consumption due to the consolidation of hardware.
B . Noise pollution can be reduced because fewer physical machines often mean less overall noise.
D . Fewer maintenance needs is a possible benefit but not directly related to environmental effects like reduced space requirements.
Reference:
CompTIA A+ Core 2 (220-1102) Exam Objectives, Section 4.5: Summarizing environmental impacts and local environmental controls, including the benefits of virtualization.