单项选择题
A user is currently running Windows XP Media Center 32-bit and wants to upgrade to WindowsVista. An in-place upgrade is required. Which of the following versions can be used to accomplish this?（）
A. Windows Vista Home Premium B. Windows Vista Home Basic C. Windows Vista Ultimate 64-bit D. Windows Vista Business 64-bit
单项选择题 Which of the following should be completed NEXT, after testing the theory of probable cause?（）
单项选择题 Which of the following should be the FINAL step according to the troubleshooting theory?（）
单项选择题 Which of the following connector types is used on CAT5e cable?（）
