单项选择题
A. The user copied to a read-only folder share.
B. The user changed the attributes of the files.
C. The user copied the files from the local My Documents folder.
D. The user moved instead of copied the files.
单项选择题 Bob, a technician, is troubleshooting a PC that intermittently does not power on. Which of the following tools would be the BEST choice to use to verify a possible cause? （）
单项选择题 A new floppy drive was just installed into a PC. The drive powers on at system boot but the status LED does not turn off during operation. Which of the following is MOST likely the issue?（）
单项选择题 A user wants to be able to receive help from a coworker that is located outside the company’s local office. Which of the following MUST be enabled to allow the user to watch and interact with the coworker simultaneously?（）