单项选择题
Which of the following BEST describes the purpose of user account control (UAC) in WindowsVista?（）
A. UAC ensures that standard users cannot access the files and folders of administrative users.
B. UAC allows a computer administrator to add new user accounts to the system, configure passwords and settings for existing users, or remove existing user accounts.
C. UAC ensures that viruses and other malware cannot infect the computer, eliminating the need for third-party antivirus solutions.
D. UAC ensures that important changes cannot be made to Windows Vista without the permission of a computer administrator.
相关考题
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单项选择题
A Denial of Service (DoS) attack is:（）
A. an attempt to bring down a website or other online service.
B. a prank where someone sends an unauthorized e-mail attempting to close a user’s e-mail account.
C. stealing a user’s identity and making changes to their accounts.
D. an attempt to change a user’s password to prevent access to a service by repeatedly guessing the user’s information. -
单项选择题
A dry cleaner is having issues with their computer overheating. Which of the following preventive maintenance techniques would be the BEST short-term resolution to the problem?（）
A. Update the firmware on the machine to accommodate for higher temperatures.
B. Use Disk Cleanup and Defrag to keep the machine from working as hard.
C. Use a can of compressed air to clean out blocked ventilation.
D. Relocate the machine to a cooler part of the building. -
单项选择题
Which of the following connectors is MOST commonly used for UTP cable?（）
A.RJ-45
B.RJ-11
C.LC
D.SC
