单项选择题 You are the administrator of 20 Windows XP Professional computers. Each computer has one hard disk that has three volumes named C, D, and E. Each volume is 4 GB in size and has approximately 1 GB of available space. The total physical memory of each computer is 196 MB in size. The paging file on each computer is located on drive D. A user named Andrea reports that every day, one hour after she starts her Windows XP Professional computer, the computer appears to perform very slowly for 15 seconds. This always happens after she receives an error message stating that the system is low on virtual memory. You want to improve the performance of Andreas computer. You do not want to install additional memory. What should you do?（）

单项选择题 You are the administrator of a Windows XP Professional computer. You run five 16-bit applications on the computer. You want to monitor the performance of the computer when all five applications run at the same time. You use System Monitor to collect the performance data. The performance counters you want to include in your analysis are IO Read Bytes/sec, IO Write Bytes/sec, and Page Faults/sec. You want to ensure that you can collect these counters for each application. What should you do?（）

单项选择题 You are the desktop administrator for your company. All users in the network have Windows XP Professional computers. Users in the research department have dual-processor computers. Users in the research department report that when they run 16-bit Windows programs, their computer performance becomes very slow. You use System Monitor to monitor the users’ computers. You discover that when the users are running their 16-bit applications, one processor shows a sustained utilization of more than 90 percent while the other processor only shows utilization of less than 10 percent. You need to improve application performance for the users in the research department. What should you do?（）