单项选择题
Which of the following is an environmental server maintenance task that should be performed every three months?（）
A. Replace the rubber mats in the server room B. Clean the servers to limit dust buildup C. Wash the outside of the servers D. Replace the server fans
单项选择题 Whichofthefollowingchannelsairflowthroughaserverchassis？（）
单项选择题 WhichofthefollowingwouldbetheBESTlocationtoresearchcurrentphysicallayout？（）
单项选择题 Fibre channel requires which of the following elements?（）
