Microsoft 70-518 : PRO: Design & Develop Wndws Apps Using MS .NET Framework 4

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Microsoft 70-518 Exam Syllabus Topics:

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

1. You are analyzing a Windows client application that uses Microsoft Visual Studio 2010 and
Microsoft SQL Server 2008.
The application updates two database tables from the main user interface (UI) thread.
You need to ensure that the following requirements are met:
---
The database tables are either updated simultaneously or not updated at all.
Users are notified of the success or failure of the updates.
Users are able to perform other tasks during the update process.
What should you do?

A) Use TransactionScope in a using block on the UI thread.
Create a DependentTransaction object within the block and pass the object to the BackgroundWorkerReportProgress method.
Use the object in the ReportProgress method to create a new TransactionScope block.
B) Move the database update logic to a BackgroundWorker thread.
Ensure that the thread is enclosed in a TransactionScope using block in the BackgroundWorkerDoWork method
C) Use TransactionScope in a using block on the UI thread.
Batch the database updates by setting the DbDataAdapter.UpdateBatchSize property to 2.
D) Use TransactionScope in a using block on the main thread.
Create a BackgroundWorker thread within the block.
Move the database updates to the BackgroundWorkerDoWork method.

2. You are designing a complex and critical Windows desktop application by using Microsoft
.NET Framework 4 and Microsoft Visual Studio 2010.
You plan to implement a logging strategy for the application.
You need to record all unexpected errors that occur in the application.
What should you do?

A) Subscribe to the unhandled exception event handler for the AppDomain object.
Record relevant application-specific information to an external log.
B) Subscribe to the unhandled exception event handler for the application's dispatcher on the main application thread.
Record relevant application-specific information to an external log.
C) Create a generic catch (Exception e) block in the Main method of the application.
Record relevant application-specific information to a log in the Main method.
D) Create a global WIN 32 unhandled exception filter.
Record relevant application-specific information to an external log from within the filter.

3. You are designing a Windows Presentation Foundation (WPF) application. The WPF application contains code that will be executed by both full trust callers and partial trust callers.
The WPF application code does not have the AllowPartialTrustCallers attribute set.
You have the following requirements:
- The application security settings must allow partial trust callers to create and write
to a file.
- Users must have access only to files that they create and not to files created by other users.
You need to recommend a location for storing each user's files.
Which location should you recommend?

A) The user's IsolatedStorage folder
B) The user's LocalSettings folder
C) The user's My Documents folder
D) The user's Roaming folder

4. You are designing a Windows Presentation Foundation (WPF) application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
During testing of the application, 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) Scalability testing
B) Stability testing
C) Security testing
D) Usability testing

5. You are analyzing an application that uses Microsoft .NET Framework 4 and Microsoft SQL Server 2008.
The application is used to maintain an inventory database and is accessed from several remote Windows client applications. The application frequently updates multiple rows in a database table by using a DbDataAdapter object.
Users report that the application runs slowly during peak business hours.
When large number of records are changed by multiple users, you discover the following:
The CPU utilization of the client applications is normal.
The network utilization increases slightly.
The CPU utilization of the database server remains close to the normal average
for a day.
You need to resolve the performance issue.
What should you do?

A) Disable batch updates. Modify the client application to perform a single update.
B) Move the update method calls to a separate BackgroundWorker thread.
C) Insert a random time interval between updates.
D) Remove any limit on batch update sizes. Modify the client application to perform a single update.

Solutions: