单项选择题 A technician is instructed to configure a set of mirrored drives on a desktop. Which of thefollowing RAID levels does this match?（）

单项选择题 A technician is attempting to determine whether a CAT5 patch cord is a straight-through or acrossover. Which of the following is the BEST to use to determine the cord type?（）

单项选择题 A workstation has an error message that states “NTLDR is missing”. Which of the following is MOST likely the cause?（）