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Exam Code: 70-486
Exam Name: Developing ASP.NET MVC 4 Web Applications
Certification Provider: Microsoft

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QUESTION 171
Hotspot Question
You are developing an ASP.NET MVC application. The layout page of the application references the jQuery library. You develop a view that uses the layout page.
The view includes the following markup:
 
The application includes the following class:
 
When a user clicks the button, an AJAX call must retrieve the partial view and append it to the newBooks div element.
You need to implement the AJAX request.
How should you complete the relevant code? To answer, select the appropriate code segment from each list in the answer area.
 
Answer:
 

QUESTION 172
Hotspot Question
You are developing an ASP.NET MVC 4 application.
You are using IntelliTrace to debug the application.
You configure IntelliTrace as shown in the screenshot below.
 
To answer, make the appropriate selections in the answer area.
 
Answer:
 

QUESTION 173
Hotspot Question
You develop an ASP.NET MVC application. The application includes a feature that allows users to reset their passwords. The feature is enabled by a ForgotPassword controller method and a corresponding Razor view.
You need to prevent Cross-Site Request Forgery (CSRF) attacks.
How should you complete the relevant code? To answer, select the appropriate code segment from each list in the answer area.
 
Answer:
 

QUESTION 174
Drag and Drop Question
You are developing an ASP.NET MVC application in Visual Studio.
The application contains sensitive bank account data.
The application contains a helper class named SensitiveData.Helpers.CustomEncryptor.
 
The application contains a controller named BankAccountController with two actions.
 
The application contains a model named BankAccount, which is defined in the following code segment.
 
The application must not display AccountNumber in clear text in any URL.
You need to build the view for the GetAccounts action.
You have the following code:
 
Which code segments should you include in Target 1, Target 2 and Target 3 to build the view? To answer, drag the appropriate code segment to the correct targets. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
 
Answer:
 

QUESTION 175
Hotspot Question
You develop a new ASP.NET MVC web application. The application is hosted in an Azure Web Role. It includes the following code. Line numbers are included for reference only.
 
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
 
Answer:
 

QUESTION 176
Drag and Drop Question
You are developing an ASP.NET MVC application in Visual Studio.
The application supports multiple cultures.
To set the culture, the application must use the AcceptLanguage header field value sent by the client browser.
You need to ensure that the application can set the culture.
You have the following markup in the web.config file:
 
Which markup segments should you include in Target 1, Target 2 and Target 3 to complete markup? To answer, drag the appropriate markup segments to the correct targets. Each markup segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
 
Answer:
 

QUESTION 177
You are developing an Azure worker role. You enable crash dump collection for the role.
When the role starts, an external application stops responding.
You need to download the crash dump to determine why the application stops responding.
From which two locations can you download the crash dump? Each correct answer presents a complete solution.

A.    Azure Blob storage
B.    the temp folder on the virtual machine that is running the role instance
C.    Azure file storage
D.    the DiagnosticStore local resource folder on the virtual machine that is running the role instance

Answer: AD
Explanation:
When you enable collection of crash dumps, the resulting data is written to the CrashDumps directory in the DiagnosticStore local resource that is automatically configured for your role.
When crash dump data is transferred to persistent storage, it is stored to the wad-crash-dumps Blob container.
https://msdn.microsoft.com/library/microsoft.windowsazure.diagnostics.crashdumps.enablecollection.aspx

QUESTION 178
You are developing an application that uses many small images.
When the images load, the application runs slowly.
You need to improve the performance of the application.
What should you do?

A.    Preload all the images when the application starts to ensure that the images are cached.
B.    Convert the images to ICO file format and stream all images on a single connection.
C.    Host all images on a Microsoft Azure web role with multiple instances.
D.    Combine all the images into a single image and use CSS to create sprites.

Answer: D
Explanation:
Because browsers limit how many concurrent HTTP requests they make to a website, a web page with many small icon images can result in a longer load time. You can combine many small images into a single larger image - a CSS sprite - using the free ASP.NET Sprite and Image Optimization Library available from Microsoft.
http://dotnetslackers.com/articles/aspnet/CSS-Sprites-and-the-ASP-NET-Sprite-and-Image-Optimization-Library.aspx

QUESTION 179
Drag and Drop Question
You are developing an ASP.NET web application that uses health monitoring to log events to the Windows Event Log. The application contains a custom event that is defined in the following code segment. Line numbers are included for reference only.
 
You need to ensure that the event is correctly added to the Windows event log.
How should you complete the relevant code? To answer, drag the appropriate code segment to the correct location or locations. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
 
Answer:
 

QUESTION 180
Hotspot Question
You are developing an ASP.NET MVC application.
Before an action is executed, information about the action must be written to a log.
After results are returned, information about the results also must be written to the log.
You need to log the actions and results.
You have the following code:
 
Which code segments should you include in Target 1, Target 2 and Target 3 to implement the LogActionFilter class? (To answer, select the appropriate option from the drop-down list in the answer area.)
 
Answer:
 

QUESTION 181
You are developing a new ASP.NET MVC application that will be hosted on Microsoft Azure.
You need to implement caching.
The caching solution must support the following:
- The cache must be able to store out-of-process ASP.NET session state.
- The cache must be able to store a variety of data types.
- The cache must offer a large amount of space for cached content.
You must be able to share output cache content across web server instances.
You need to select a cache solution.
Which caching solution should you choose?

A.    ASP.NET Caching
B.    Azure In-Role Cache
C.    Azure Redis Cache
D.    Azure Managed Cache Service

Answer: C
Explanation:
https://azure.microsoft.com/sv-se/documentation/articles/cache-dotnet-how-to-use-azure-redis-cache/

QUESTION 182
You are developing an ASP.NET MVC application that uses forms authentication.
The application uses SQL queries that display customer order data.
You need to prevent all SQL injection attacks against the application.
How should you secure the queries?

A.    Implement parameterization.
B.    Pattern check the input.
C.    Filter out prohibited words in the input.
D.    Escape single quotes on string-based input parameters.

Answer: A
Explanation:
With most development platforms, parameterized statements that work with parameters can be used (sometimes called placeholders or bind variables) instead of embedding user input in the statement. A placeholder can only store a value of the given type and not an arbitrary SQL fragment. Hence the SQL injection would simply be treated as a strange (and probably invalid) parameter value.
https://en.wikipedia.org/wiki/SQL_injection#Parameterized_statements

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