###BeginCaseStudy###
Case Study: 3
Video Transcoding Service
Background

You are developing a video transcoding service. This service is used by customers to upload
video files, convert video to other formats, and view the converted files. This service is used
by customers all over the world.
Business Requirements
The user-facing portion of the application is an ASP.NET MVC application. It provides an
interface for administrators to upload video and schedule transcoding. It also enables
administrators and users to download the transcoded videos.
When videos are uploaded, they are populated with metadata used to identify the video. The
video metadata is gathered by only one system when the video upload is complete.
Customers require support for Microsoft Internet Explorer 7 and later.
The application contains a header that is visible on every page.
If the logged-on user is an administrator, then the header will contain links to administrative
functions. This information is read from a cookie that is set on the server. The administrative
links must not be present if an error condition is present.
Technical Requirements
User Experience:
 The front-end web application enables a user to view a list of videos.
 The main view of the application is the web page that displays the list of videos.
 HTML elements other than the list of videos are changed with every request
requiring the page to reload.
Compatibility:
 Some customers use browsers that do not support the HTTP DELETE verb.
 These browsers send a POST request with an HTTP header of X-Delete when the
intended action is to delete.
Transcoding:
 The video transcoding occurs on a set of Windows Azure worker roles.
 The transcoding is performed by a third-party command line tool named
transcode.exe. When the tool is installed, an Environment variable named transcode
contains the path to the utility.
 A variable named license contains the license key. The license for the transcoding
utility requires that it be unregistered when it is not in use.
 The transcoding utility requires a significant amount of resources. A maximum of 10
instances of the utility can be running at any one time. If an instance of the role
cannot process an additional video, it must not prevent any other roles from
processing that video.
 The utility logs errors to a Logs directory under the utilities path.
 A local Azure directory resource named perf is used to capture performance data.
Development:
 Developers must use Microsoft Remote Desktop Protocol (RDP) to view errors
generated by the transcode.exe utility.
 An x509 certificate has been created and distributed to the developers for this
purpose.

 Developers must be able to use only RDP and not any other administrative
functions.
Application Structure

###EndCaseStudy###

DRAG DROP
You need to ensure that the transcode.exe utility is installed before the worker role starts.
You have the following markup:

Which markup segments should you include in Target 1, Target 2, Target 3, Target 4 and Target 5 to
implement the startup task? To answer, drag the appropriate markup segments to the correct
targets. Each markup segments 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.

###BeginCaseStudy###
Case Study: 3
Video Transcoding Service
Background

You are developing a video transcoding service. This service is used by customers to upload
video files, convert video to other formats, and view the converted files. This service is used
by customers all over the world.
Business Requirements
The user-facing portion of the application is an ASP.NET MVC application. It provides an
interface for administrators to upload video and schedule transcoding. It also enables
administrators and users to download the transcoded videos.
When videos are uploaded, they are populated with metadata used to identify the video. The
video metadata is gathered by only one system when the video upload is complete.
Customers require support for Microsoft Internet Explorer 7 and later.
The application contains a header that is visible on every page.
If the logged-on user is an administrator, then the header will contain links to administrative
functions. This information is read from a cookie that is set on the server. The administrative
links must not be present if an error condition is present.
Technical Requirements
User Experience:
 The front-end web application enables a user to view a list of videos.
 The main view of the application is the web page that displays the list of videos.
 HTML elements other than the list of videos are changed with every request
requiring the page to reload.
Compatibility:
 Some customers use browsers that do not support the HTTP DELETE verb.
 These browsers send a POST request with an HTTP header of X-Delete when the
intended action is to delete.
Transcoding:
 The video transcoding occurs on a set of Windows Azure worker roles.
 The transcoding is performed by a third-party command line tool named
transcode.exe. When the tool is installed, an Environment variable named transcode
contains the path to the utility.
 A variable named license contains the license key. The license for the transcoding
utility requires that it be unregistered when it is not in use.
 The transcoding utility requires a significant amount of resources. A maximum of 10
instances of the utility can be running at any one time. If an instance of the role
cannot process an additional video, it must not prevent any other roles from
processing that video.
 The utility logs errors to a Logs directory under the utilities path.
 A local Azure directory resource named perf is used to capture performance data.
Development:
 Developers must use Microsoft Remote Desktop Protocol (RDP) to view errors
generated by the transcode.exe utility.
 An x509 certificate has been created and distributed to the developers for this
purpose.

 Developers must be able to use only RDP and not any other administrative
functions.
Application Structure

###EndCaseStudy###

You need to ensure that all the MVC controllers are secure.
Which code segment should you use as the body for the CreateController method in
AdminVerifierFactory.cs?

###BeginCaseStudy###
Case Study: 3
Video Transcoding Service
Background

You are developing a video transcoding service. This service is used by customers to upload
video files, convert video to other formats, and view the converted files. This service is used
by customers all over the world.
Business Requirements
The user-facing portion of the application is an ASP.NET MVC application. It provides an
interface for administrators to upload video and schedule transcoding. It also enables
administrators and users to download the transcoded videos.
When videos are uploaded, they are populated with metadata used to identify the video. The
video metadata is gathered by only one system when the video upload is complete.
Customers require support for Microsoft Internet Explorer 7 and later.
The application contains a header that is visible on every page.
If the logged-on user is an administrator, then the header will contain links to administrative
functions. This information is read from a cookie that is set on the server. The administrative
links must not be present if an error condition is present.
Technical Requirements
User Experience:
 The front-end web application enables a user to view a list of videos.
 The main view of the application is the web page that displays the list of videos.
 HTML elements other than the list of videos are changed with every request
requiring the page to reload.
Compatibility:
 Some customers use browsers that do not support the HTTP DELETE verb.
 These browsers send a POST request with an HTTP header of X-Delete when the
intended action is to delete.
Transcoding:
 The video transcoding occurs on a set of Windows Azure worker roles.
 The transcoding is performed by a third-party command line tool named
transcode.exe. When the tool is installed, an Environment variable named transcode
contains the path to the utility.
 A variable named license contains the license key. The license for the transcoding
utility requires that it be unregistered when it is not in use.
 The transcoding utility requires a significant amount of resources. A maximum of 10
instances of the utility can be running at any one time. If an instance of the role
cannot process an additional video, it must not prevent any other roles from
processing that video.
 The utility logs errors to a Logs directory under the utilities path.
 A local Azure directory resource named perf is used to capture performance data.
Development:
 Developers must use Microsoft Remote Desktop Protocol (RDP) to view errors
generated by the transcode.exe utility.
 An x509 certificate has been created and distributed to the developers for this
purpose.

 Developers must be able to use only RDP and not any other administrative
functions.
Application Structure

###EndCaseStudy###

You need to ensure that developers can connect to a Microsoft Azure role by using RDP.
What should you do?

You are developing an ASP.NET MVC application that uses forms authentication. The user database
contains a user named LibraryAdmin.
You have the following requirements:
You must allow all users to access the GetBook method.
You must restrict access to the EditBook method to the user named LibraryAdmin.
You need to implement the controller to meet the requirements.
Which code segment should you use? (Each correct answer presents a complete solution. Choose all
that apply.)

DRAG DROP
You are developing an ASP.NET MVC application that takes customer orders.
Orders are restricted to customers with IP addresses based in the United States.
You need to implement a custom route handler.
How should you implement the route handler? (To answer, drag the appropriate line of code to the
correct location or locations. Each line of code 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.)

You are designing an HTML5 website.
You need to design the interface to make the content of the web page viewable in all types of
browsers, including voice recognition software, screen readers, and reading pens.
What should you do? (Each correct answer presents a complete solution. Choose all that apply.)

DRAG DROP
You are developing an ASP.NET MVC web application in Visual Studio 2012.

The application has a model named ReservationLocation that contains properties named City and
State.
The view that displays reservations has a single text box named loc for entering the location
information. The location is entered as city, state.
There are action methods that have ReservationLocation as a parameter type.
You need to ensure that the City and State properties are correctly populated.
How should you implement model binding for the ReservationLocation type? (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.)

You are developing an ASP.NET MVC web application in Visual Studio 2012. The application requires
several thousand content files. All content is hosted on the same IIS instance as the application.
You detect performance issues when the application starts.
You need to resolve the performance issues.

What should you do?

You are developing an ASP.NET MVC application in Visual Studio 2012. The application supports
multiple cultures.
The application contains three resource files in the Resources directory:
My Dictionary.resx
MyDictionary.es.resx
MyDictionary.fr.resx
Each file contains a public resource named Title with localized translation.
The application is configured to set the culture based on the client browser settings.
The application contains a controller with the action defined in the following code segment. (Line
numbers are included for reference only.)

You need to set ViewBag.Title to the localized title contained in the resource files.
Which code segment should you add to the action at line 03?

You are testing an ASP.NET application.
The test plan requires that tests run against the application’s business layer.
You need to use the test project template that meets this requirement.
Which template should you use?