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QUESTION 51

DRAG DROP

You are developing a self-hosted WCF service that returns stock market information. The service must be discoverable by any client application. You need to build the service host. How should you build the host? (To answer, drag the appropriate code segments to the correct location or locations in the answer area. 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.)

 

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Correct Answer:

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QUESTION 52

DRAG DROP

You are developing a WCF service. You need to implement transport security by using NTLM authentication and NetTcpBindings. Which configuration values should you use? (To answer, drag the appropriate configuration values to the correct location or locations in the answer area. Each configuration value 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.)

 

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Correct Answer:

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QUESTION 53

You are developing a WCF service. A new service instance must be created for each client session. You need to choose an instancing mode. Which instance mode should you use?

 

A.

PerCall

B.

Single

C.

Multiple

D.

PerSession

E.

PerRequest

 

Correct Answer: D

 

 

QUESTION 54

DRAG DROP

You are developing a WCF service. The service will stream messages to clients on the internal network. You must use Windows Authentication, and all messages must be binary encoded. You need to configure the service. What should you do? (To answer, drag the appropriate elements to the correct location or locations in the answer area. Each element 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.)

 

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Correct Answer:

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QUESTION 55

DRAG DROP

You are developing a WCF service. The WCF service requires implementations of the new data contracts to validate against the old schema. You need to develop a new data contract without breaking current functionality. What should you do? (To answer, drag the appropriate code segments to the correct location or locations in the answer area. 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.)

 

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Correct Answer:

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QUESTION 56

DRAG DROP

You are creating a WCF service. The service endpoints must be exposed to the Windows Azure Service Bus. The service bus has a namespace named RestaurantSB. The key provider is “owner”. You need to modify the web.config file to expose the endpoints. How should you modify the file? (To answer, drag the appropriate attributes to the correct location or locations in the answer area. Each attribute 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.)

 

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Correct Answer:

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QUESTION 57

DRAG DROP

You are developing an ASP.NET MVC Web API application. The application must meet the following requirements:

 

clip_image022It must send or receive data without the use of a buffer.

clip_image022[1]It must allow up to 1 MB of data to be received.

clip_image022[2]It must allow up to 2 MB of data to be sent.

 

You need to complete the code to meet the requirements. What should you do? (To answer, drag the appropriate code segments to the correct location or locations in the answer area. 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.)

 

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Correct Answer:

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QUESTION 58

You are developing an ASP.NET MVC application. The application is an order processing system that uses the ADO.NET Entity Framework against a SQL Server database. It has a controller that loads a page that displays all orders along with customer information. Lazy loading has been disabled.

 

The Order class is shown below.

 

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You need to return the orders and customer information in a single round trip to the database. Which code segment should you use?

 

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A.

Option A

B.

Option B

C.

Option C

D.

Option D

 

Correct Answer: A

 

 

QUESTION 59

You are developing an ASP.NET MVC application that reads and writes data from a SQL Server database. You need to maintain data integrity in all situations that use transactions.

 

A.

ReadUncommitted

B.

Repeatable

C.

Serializable

D.

ReadCommitted

 

Correct Answer: D

 

 

QUESTION 60

You are developing an ASP.NET MVC application. Deployment administrators do not have access to Visual Studio 2102, but will have the elevated permissions required to deploy the application to the servers. You need to select a deployment tool for use by the deployment administrators. Which tool should you use?

 

A.

Publish Web Site Tool

B.

Web Deployment Package

C.

One-Click Publish

D.

Deployment Package Editor

 

Correct Answer: B

 

 

Case Study 1, Scenario 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:

clip_image022[3]The front-end web application enables a user to view a list of videos. The main view of the clip_image022[4]application is the web page that displays the list of videos.

clip_image022[5]HTML elements other than the list of videos are changed with every request requiring the page to reload.

 

Compatibility:

clip_image022[6]Some customers use browsers that do not support the HTTP DELETE verb.

clip_image022[7]These browsers send a POST request with an HTTP header of X-Delete when the intended action is to delete.

 

Transcoding:

clip_image022[8]The video transcoding occurs on a set of Windows Azure worker roles.

clip_image022[9]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.

clip_image022[10]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.

clip_image022[11]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.

clip_image022[12]The utility logs errors to a Logs directory under the utilities path.

clip_image022[13]A local Azure directory resource named perf is used to capture performance data.

 

Development:

clip_image022[14]Developers must use Microsoft Remote Desktop Protocol (RDP) to view errors generated by the transcode.exe utility.

clip_image022[15]An x509 certificate has been created and distributed to the developers for this purpose.

clip_image022[16]Developers must be able to use only RDP and not any other administrative functions.

 

Application Structure

TranscodeWorkerRole.es

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