多项选择题

A.Start listening for events by calling the Start metho……

You are developing an application that receives events asynchronously. You create a WqlEventQuery instance to specify the events and event conditions to which the application must respond. You also create a ManagementEventWatcher instance to subscribe to events matching the query.You need to identify the other actions you must perform before the application can receive events asynchronously.
Which two actions should you perform？（）

A.Start listening for events by calling the Start method of the ManagementEventWatcher.
B.Set up a listener for events by using the EventArrived event of the ManagementEventWatcher.
C.Use the WaitForNextEvent method of the ManagementEventWatcher to wait for the events.
D.Create an event handler class that has a method that receives an ObjectReadyEventArgs parameter.
E.Set up a listener for events by using the Stopped event of the ManagementEventWatcher.

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单项选择题You are developing an application that will perform mathematical calculations.You need to ensure that the application is able to perform multiple calculations simultaneously. What should you do？（）

A.Set the IdealProcessor property of the ProcessThread object.
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单项选择题Your application uses two threads， named threadOne and threadTwo.You need to modify the code to prevent the execution of threadOne until threadTwo completes execution. What should you do？（）

A.Configure threadOne to run at a lower priority.
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多项选择题You create a service application that monitors free space on a hard disk drive. You must ensure that the service application runs in the background and monitors the free space every minute. What should you do？（）

A.Add code to the default constructor of the Service class to monitor the free space on the hard disk drive.
B.Add code to the OnStart method of the Service class to monitor the free space on the hard disk drive.
C.Add an instance of the System.Windows.Forms.Timer class to the Service class and configure it to fire every minute.
D.Add an instance of the System.Timers.Timer class to the Service class and configure it to fire every minute.
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G.Add code to the Tick event handler of the timer to monitor the free space on the hard disk drive.