多项选择题 You are a network administrator for ExamSheet.nets Windows 2000 network.  A user named Sandra has a Windows 2000 Professional computer with a single hard disk with two partitions configured as drive C and D. A pagefile has been configured on Drive C:. Sandra reports that applications on her Windows 2000 Professional computer are running slowly. You notice that Sandras computer has 64 MB of RAM. Her hard drive contains 70 MB of free disk space on drive C and 160 MB of free disk space on drive D.You want to improve the performance of Sandras computer.  What should you do?（）

单项选择题 You are a network administrator for ExamSheet.nets Windows 2000 network.  Your computer is installed with Windows 2000 Professional. You schedule a task that will copy files from your computer to another computer on the network. You notice that the task is not completing correctly. You manually copy the files from your computer to other computers on the network without any errors. You verify that all of your other tasks are working correctly. You want the task to complete successfully.  What should you do? （）

单项选择题 You are a network administrator for ExamSheet.nets Windows 2000 network.  You use a user account named User1 to log on tot a Windows 2000 Professional computer. The computer is used by different students in a classroom. User1 does not have administrative rights. However, you prefer to use this account for your daily activities. Using the Task Scheduler you schedule a task to run a command file named AddUsers.cmd that automatically adds six more student user accounts. You configure the task to run as the administrator account.  After the task was scheduled to have run you open the Task Scheduler and discover a status of "Could not start" for the task. You also discover account logon failure audit events in the computers Security log.You want the scheduled task to successfully run AddUsers.cmd. You want to accomplish this with the least amount of administrative effort.  What should you do?（）