单项选择题
A. Corrupt file system table
B. Backplane failure
C. Multiple drive failure
D. Bad cable
单项选择题 There is a power outage and all servers are shut down properly by the uninterruptible power supply（UPS） software. When one of the servers starts up it displays a logical drive failed error. This server has two processors，16GB of memory， and a RAID 5 array with 10 drives. Which of the following is the MOST likely cause？（）
多项选择题 Whichofthefollowingwillallowaservertocontinuetofunctionifastickofmemoryfails？（）
单项选择题 WhichofthefollowingistheFIRSTthingtoconsiderwhendesigninganemailretentionpolicy？（）