Ensurepass

 

Testlet 1

 

Case Study 2

 

Background

You are developing an ASP.NET MVC application in Visual Studio 2012 that will be used to process orders.

 

Business Requirements

The application contains the following three pages.

 

·  A page that queries an external database for orders that are ready to be processed. The user can then process the order.

 

·  A page to view processed orders.

 

·  A page to view vendor information.

 

The application consumes three WCF services to retrieve external data.

 

Technical Requirements

Visual Studio Solution:

 

The solution contains the following four projects.

 

·  ExternalQueue: A WCF service project used to communicate with the external order database.

 

·  OrderProcessor: An ASP.NET MVC project used for order processing and logging order metadata.

 

·  OrderUpload: A WCF service project used to submit order data to an external data source.

 

·  Shipping: A WCF service project used to acquire shipping information. ExternalQueue Project:

Entity Framework is used for data access. The entities are defined in the ExternalOrders.edmx file as shown in the following diagram.


 

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The project contains two services defined in the following files.

 

·  IExternalQueueService.cs

 

·  ExternalQueueService.svc.

 

The ExternalQueue.Helpers namespace contains a definition for a class named OrderNotFound Exception. OrderProcessor Project:

Entity Framework is used for data access. The entities are defined in the ProcessedOrders.edmx file as shown in the following diagram.

 

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The classes are contained in the OrderProcessor.Entities namespace. The project contains the following two controllers.

 

·  InboundQueueController.cs


 

·  ProcessedOrderController.cs

 

WCF service proxies to the ExternalQueue, Shipping and OrderUpload services have been generated by using the command prompt. The ExecuteCommandProcedure() method in the ExternalQueueService.svc file must run asynchronously.

 

The ProcessedOrderController controller has the following requirements.

 

The GetVendorPolicy() method must enforce a 10 minute absolute cache expiration policy.

 

The GetProcessedOrders() method must return a view of the 10 most recently processed orders. OrderUpload Project:

The project contains two services defined in the following files.

 

·  IUploadCallbackService.cs

 

·  UploadCallbackService.svc

 

Data Access is maintained in a file named UploadOrder.es. Shipping Project:

Entity Framework is used for data access. The entities are defined in the ExternalOrders.edmx file as shown in the following diagram.

 

clip_image003

 

The Custom Tool property for ExternalOrders.edmx has been removed. POCO classes for the Entity Model are located in the ShippingAddress.cs file. The POCO entity must be loaded by using lazy loading. The project contains two services defined in the following files.

 

·  IShippingService.cs


 

·  ShippingService.svc.

 

The IShippingService contract must contain an operation that receives an order number as a parameter. The operation must return a class named ShippingInfo that inherits from a class named State.

 

Application Structure

 

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QUESTION 1

The GetVendorPolicy() private method in the ProcessedOrderController controller is returning a CacheItemPolicy object with default values. The returned policy must expire if the external file located at

C:TriggersVendorTrigger.txt has been modified or the timeout outlined in the technical requirements is reached. You need to return the policy. How should you build the method? (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.)

 

Select and Place:


 

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Correct Answer:

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QUESTION 2


 

DRAG DROP

 

You add a class named ShippingInfo. You need to modify the IShippingService interface and the ShippingInfo class to meet the technical 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.)

 

Select and Place:

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Correct Answer:


 

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QUESTION 3

DRAG DROP

 

You need to create the ShippingContext class in the ShippingAddress.cs file 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.)

 

Select and Place:


 

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Correct Answer:


 

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QUESTION 4

DRAG DROP

 

You need to complete the GetProcessedOrders() action in the ProcessedOrderController controller 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.)

 

 

Select and Place:


 

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Correct Answer:


 

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QUESTION 5

DRAG DROP

 

The GetQueueItems() action in the InboundQueueController controller is not populating the view with data. The action must populate the view with data by calling the GetExternalOrders() method in the ExternalQueueService service using the ChannelFactory class. You need to modify the action to populate the view with data. 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.)

 

Select and Place:


 

clip_image019

 

Correct Answer:


 

clip_image020

 

 

QUESTION 6

The DeleteExternalOrder() method in the ExternalQueueService service is not throwing a FaultException exception as defined by the FaultContractAttribute attribute in the IExternalQueueService.cs file. You need to throw the FaultException exception. Which code segments can you insert at line EQ45 to achieve this goal? (Each correct answer presents a complete solution. Chose all that apply)

 

A. clip_image021

B. clip_image022

C. clip_image023

D.clip_image025


 

Correct Answer: BC

 

QUESTION 7

DRAG DROP

 

The GetExternalOrders() method must use members of the EntityClient namespace to query the database for all records in the InboundQueue entity. You need to modify the GetExternalOrders() method to return the correct data. 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.)

 

Select and Place:


 

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Correct Answer:


 

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QUESTION 8

DRAG DROP

 

You need to modify the ExecuteCommandProcedure() method to meet the technical requirements. Which code segment should you use?

 

Select and Place:


 

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Correct Answer:

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QUESTION 9

DRAG DROP

 

The UploadOrder() method in the UploadCallbackService service is not implementing the callback behavior defined in the IUploadCallBackService interface. You need to modify the class to implement the required callback behavior. What should you do? (To answer, drag the appropriate code segments to the


 

correct location or locations in the answer area. Each code 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.)

 

 

Select and Place:

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Correct Answer:


 

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