单项选择题
An administrator has a rack server that is 3.5 inches （8.9 cm） tall. Which of the following is the correct U size for this server？（）
A.One B.Two C.Three D.Five
单项选择题 WhichistheminimumnumberofdrivesinanRAID10configuration？（）
单项选择题 HowmanywirepairsareinastandardCAT6cable？（）
单项选择题 WhichofthefollowingwillattachtoanEIDEconnector？（）
