How to win with exam 70 487

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Q21. - (Topic 3) 

You need to update the ImportBooks() method to use database transactions. 

Which code segment should you use? 

A. SqlConnection.BeginTransaction(IsolationLevel.RepeatableRead); 

B. SqlConnection.BeginTransaction(IsolationLeve.ReadUnconvnited); 

C. SqlConneetion.BeginTransaction(IsolationLevel.Serializable); 

D. SqlConnection.BeginTransaction(IsolationLevel.Snapshot); 

Answer:

Explanation: * scenario: The ImportBooks() method must keep a copy of the data that can be accessed while new books are being imported without blocking reads. 

* ReadUncommitted A dirty read is possible, meaning that no shared locks are issued and no exclusive locks are honored. 


Q22. DRAG DROP - (Topic 1) 

Flight information data provided by Margie's Travel is updated both locally and remotely. When the data is synced, all changes need to be merged together without causing any data loss or corruption. 

You need to implement the Sync() method in the MargiesTravelSync.es file. 

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.) 

Answer: 


Q23. - (Topic 4) 

You are developing a .NET application that uses the HttpClient type to call an ASP.NET Web API application. The API call returns a list of customers in JSON format and logs the results. 

The URI for the API call is in a variable named address. 

You need to make the API call without blocking. 

Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: Example: // Create an HttpClient instance 

11: HttpClient client = new HttpClient(); 

12: 

13: // Send a request asynchronously continue when complete 

14: client.GetAsync(_address).ContinueWith( 

15: (requestTask) => 

16: { 

17: // Get HTTP response from completed task. 

18: HttpResponseMessage response = requestTask.Result; 

19: 

20: // Check that response was successful or throw exception 

21: response.EnsureSuccessStatusCode(); 

22: 

23: // Read response asynchronously as JsonValue and write out top facts for each country 

24: response.Content.ReadAsAsync<JsonArray>().ContinueWith( 

25: (readTask) => 


Q24. DRAG DROP - (Topic 4) 

You are developing a self-hosted WCF service to display data about books. The solution contains a service named BookService that implements the IBookService interface. 

You need to expose the metadata in the service host programmatically. 

You have the following code: 

Which code segments should you include in Target 1, Target 2, Target 3, Target 4 and Target 5 to build the service host? (To answer, drag the appropriate code segments to the correct targets 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.) 

Answer: 


Q25. DRAG DROP - (Topic 4) 

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.) 

Answer: 


Q26. - (Topic 4) 

You are preparing to develop a set of libraries for a company. 

The libraries must be shared across the company. 

You need to create a remote NuGet feed that exposes the libraries. 

What should you do? (Each answer presents part of the solution. Choose all that apply.) 

A. Install the NuGet.Feed Package. 

B. Install the NuGet.Server Package. 

C. Configure the Packages folder located in the system.webserver section of the web application's Web.config. 

D. Create a new Empty Web Site in Visual Studio 2012. 

E. Configure the Packages folder located in the appSettings section of the web application's Web.config. 

F. Add packages to the Packages folder. 

G. Create a new Empty Web Application in Visual Studio 2012. 

Answer: B,E,F,G 

Explanation: Explanation/Reference: 


Q27. DRAG DROP - (Topic 4) 

You are developing an Internet-based ASP.NET Web API application that manages pet data. 

You install an SSL certificate on the web server to encrypt calls to the API. You create a class named PetAuthorization, which inherits from a type named AuthorizeAttribute, and implements the OnAuthorization() method. 

You need to implement basic authentication for the API. 

What should you do? (To answer, drag the appropriate words to the correct targets in the answer area. Words 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: 


Q28. - (Topic 4) 

You are developing a Microsoft Azure web application. The application will be deployed to 10 web role instances. A minimum of 8 running instances is needed to meet scaling requirements. 

You need to configure the application so that upgrades are performed as quickly as possible, but do not violate scaling requirements. 

How many upgrade domains should you use? 

A. 1 

B. 2 

C. 5 

D. 10 

Answer:


Q29. - (Topic 1) 

Transformed historical flight information provided by the RemoteDataStream() method must be written to the response stream as a series of XML elements named Flight within a root element named Flights. Each Flight element has a child element named FlightName that contains the flight name that starts with the two-letter airline prefix. 

You need to implement the StreamHistoricalFlights() method so that it minimizes the amount of memory allocated. 

Which code segment should you use as the body of the StreamHistoricalFlights() method in the HistoricalDataLoader.es file? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: http://msdn.microsoft.com/en-us/library/system.xml.linq.xstreamingelement.aspx and http://msdn.microsoft.com/en-us/library/bb551307.aspx 


Q30. DRAG DROP - (Topic 4) 

You are developing an ASP.NET Web API action method. 

The action method must return the following JSON in the message body. 

{" Name ":" Fabrikam", "Vendor Id": 9823, "Items": ["Apples", "Oranges"] } 

You need to return an anonymous object that is serialized to JSON. 

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. 

Answer: