QUESTION 21
You are designing a Windows Presentation Foundation (WPF) application that connects to a data access layer on a server.
You have the following requirements for all security-related exceptions:
– Exceptions that occur in the data access layer must be handled in a singleexception handler in the WPF application.
– Exceptions must pass customized messages back to the WPF application.
You need to recommend an approach for creating new exception classes in the data access layer.
From which class should you inherit?
A. System.ApplicationException
B. System.AccessViolationException
C. System.InvalidOperationException
D. System.Security.SecurityException
Answer: D
QUESTION 22
You are designing a Windows application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
You plan to implement control caching to improve the loading time of a control. It is not required to refresh the content of the control after the application loads. The application will be compiled by using the .NET 4 client profile.
You need to ensure that the following requirements are met:
– The control is reusable in multiple forms.
– Data in the control is cached when the application is loaded.
What should you do?
A. In the Load event of the application window, add code to load the control.
Save the control to an instance variable.
B. In the Load event of the application window, add code to load the control.
Save the control to the cache by using objects in the System.Web.Caching namespace.
C. In the constructor of the application window, add code to load the control.
Save the control to a static variable
D. In the constructor of the application window, add code to load the control.
Save the control to the cache by using objects in the System.Web.Caching namespace
Answer: C
QUESTION 23
need to host 3rd party smth
A. hostelement
B. panel
C. pending
D. pending
Answer: A
QUESTION 24
wizard that updates one parent table and several child tables complete fast, don’t block reading dat a, parent data visible when children updated
A. update after each page in a single transaction
B. update after each page no transactions
C. update in the end, with transaction
D. update in the end, without transaction
Answer: C
QUESTION 25
Remote users have limited connectivity. Users will not have write permissions to the local file system. You plan to design the error logging strategy for the application. You need to ensure that the application can collect error information. You also need to ensure that the errors can be analyzed from a centralized location. What should you do?
A. Use the local log file
B. Use the Microsoft Sync Framework
C. Log the errors to a Web service
D. Log the errors to the Windows System event log
Answer: D
QUESTION 26
The application includes multiple Windows Workflow Foundation (WF) hosts along with thousands of instances. The application will continue to execute over extended periods of time. You need to ensure that the performance of the application does not degrade over extended periods of time. Which type of testing should you perform on the application?
A. Stress testing
B. Duration testing
C. Functional testing
D. Scalability testing
Answer: B
QUESTION 27
You are developing a Windows Presentation Foundation (WPF) application.
You need to recomend a testing strategy to identify the additional hardware resources that are necessary to support future projected growth.
Which testing strategy should you recommend?
A. Load testing
B. Stress testing
C. Capacity testing
D. Integration testing
Answer: C
QUESTION 28
You are developing a Windows Presentation Foundation (WPF) application.
You need to ensure that the following requirements are met:
– All UI elements are labled
– All property values are exposed
– Keyboard navigation contains tab stops for all controls
– The application functions on high-contrast displays
Which testing strategy should you recommend?
A. Stress testing
B. Stability testing
C. Usability testing
D. Accessibility testing
Answer: D
QUESTION 29
You are developing a Windows Presentation Foundation (WPF) application. During unit testing you identify several bottlenecks by using Windows Task Manager and Windows performance Monitor. You need to recommend a system test strategy that will meet the following requirements:
– identify major application workloads
– identify the functions of the application that are most impacted
Which testing strategy should you recommend?
A. Usability testing
B. Security testing
C. Stability testing
D. Scalability testing
Answer: D
QUESTION 30
You have developed a Windows Forms server application. Client applications connect to the server application to receive streaming media on demand on a single server. Each incoming connection is launched on a separate thread, As the number of client applications increases, users report that connection attempts fail. You need to ensure that users can connect to the server application even when the number of clients increase. What should you do?
A. Add additional RAM to the server
Increase the size of the thread pool
B. Add additional RAM to the server.
Decrease the size of the thread pool
C. Install a network load balancer
Increase the size of the connection pool
D. Install a network load balancer
Decrease the size of the connection pool
Answer: A
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