单项选择题 When cabling a rack, which of the following is BEST practice?（）

单项选择题 An administrator is planning an upgrade of a major software package on an application server.The software has been tested successfully in a test environment and it is ready to go into production. Which of the following steps should the administrator take next?（）

单项选择题 Anadministratorhasarackserverthatis3.5inches（8.9cm）tall.Whichofthefollowingisthe correctUsizeforthisserver？（）