多项选择题 An administrator has shut down a server to install additional memory. When the administrator restarts the server after the upgrade, it times out. Which of the following could be the cause of the problem?（）

单项选择题 Whenperformingabackup，whichofthefollowingmediatypeswouldhavenomovingparts？（）

单项选择题 Anadministratorhasarackserverthatis5.25inches（13.3cm）tall，whichofthefollowingisthe correctUsizeforthisserver？（）