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Microsoft PRO: Design & Develop Wndws Apps Using MS .NET Framework 4 Sample Questions:

1. You are designing a Windows Presentation Foundation (WPF) application.
The application calls methods that perform long-running computational tasks.
You need to recommend an approach for ensuring that the application remains responsive
while the tasks are executing What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A) Use asynchronous method calls from the user interface thread.
B) Use synchronous method calls from the user interface thread.
C) Run the user interface from a new multi-threaded apartment (MTA) thread.
D) Use synchronous method calls from a thread other than the thread on which the user interface runs.

2. You are designing an n-tier .NET Framework 4 solution that includes a Windows Presentation Foundation (WPF) application and a Windows Workflow Foundation (WF) component. The WF component contains functionality to incorporate frequently changing rules.
You need to recommend a tier for the deployment of the WF component that will not degrade the performance of the WPF application.
Which tier should you recommend?

A) The data access tier
B) The presentation tier
C) The business tier
D) The data tier

3. You are developing an application by using Microsoft .NET Framework 4.
The application will be used by all employees of your company. Local file stores on the computers are secure and inaccessible remotely.
You need to design a remote monitoring strategy to monitor the usage time of the application by each user.
What should you do?

A) Use the System.Management.Instrumentation namespace to issue event queries against methods that pass ProgressEvent and StoppedEvent arguments. Publish the events to the Event Log.
B) Create a TraceLog object by using the System.Diagnostics element in the application configuration file. Add the TraceSource element for startup, shutdown, and user idle time events.
C) Create a TraceLog object and the Trace object by using the System.Diagnostics element to trace startup, shutdown, and user idle time events throughout the application.
D) Use the System.Management.Instrumentation namespace to publish startup, shutdown, and user idle time events of the application. Publish the events to Microsoft Operations Manager.

4. You are designing an n-tier Windows solution that includes a data entry application. The solution uses Microsoft .NET Framework 4 and Microsoft SQL Server 2008.
The data entry application sends customer orders to a middle-tier server. The middle-tier server sends orders to a set of services that perform operations on the orders. Business rules determine which services to call and whether to run them in sequence or in parallel. The business rules are complex and data dependent.
The Windows solution must meet the following requirements:
- Optimize application performance by using dynamic load balancing. - Allow for business rules to be changed at runtime.
You need to recommend an approach that meets the requirements.
What should you recommend?

A) A routed service that uses Windows Communication Foundation (WCF) messaging
B) A Windows Communication Foundation (WCF) service for each operation, with a controller class on the middle-tier server
C) SQL Server stored procedures
D) Private message queues with a controller class on the middle-tier server

5. You are modifying an existing Windows Presentation Foundation (WPF) application that uses .NET Framework 4. The WPF application uses a wizard to capture data and insert the data into a database. The database includes one parent table and many child tables.
Inserting captured data in the database locks many database tables and delays application access.
You have the following requirements:
-
Reduce delays when saving datA.
--
Ensure that other application users are not blocked from reading datA. Ensure that captured data is available only after all child tables are updated.
You need to recommend an approach for inserting captured data into the database.
What should you recommend?

A) Insert all captured data in a single transaction when the user completes the wizard.
B) Insert captured data by using optimistic concurrency as the user completes each wizard page.
C) Insert captured data by using a single transaction as the user completes each wizard page.
D) Insert captured data by using non-transactional operations when the user completes the wizard.

Solutions: