70-483 [May 2016]

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2016 May 70-483 Study Guide Questions:

Q51. - (Topic 2) 

You are developing an application. 

The application contains the following code segment (line numbers are included for reference only): 

When you run the code, you receive the following error message: "Cannot implicitly convert type 'object'' to 'int'. An explicit conversion exists (are you missing a cast?)." 

You need to ensure that the code can be compiled. 

Which code should you use to replace line 05? 

A. var2 = arrayl[0] is int; 

B. var2 = ((List<int>)arrayl) [0]; 

C. var2 = arrayl[0].Equals(typeof(int)); 

D. var2 = (int) arrayl [0]; 

Answer: D 


Q52. - (Topic 1) 

You are developing an application by using C#. The application includes the following code segment. (Line numbers are included for reference only.) 

The DoWork() method must not throw any exceptions when converting the obj object to the IDataContainer interface or when accessing the Data property. 

You need to meet the requirements. Which code segment should you insert at line 07? 

A. var dataContainer = (IDataContainer)obj; 

B. dynamic dataContainer = obj; 

C. var dataContainer = obj is IDataContainer; 

D. var dataContainer = obj as IDataContainer; 

Answer: D 

Explanation: 

As - The as operator is like a cast operation. However, if the conversion isn't possible, as returns null instead of raising an exception. http://msdn.microsoft.com/en-us/library/cscsdfbt(v=vs.110).aspx 


Q53. - (Topic 2) 

You are creating an application that processes a list of numbers. 

The application must define a method that queries the list and displays a subset of the 

numbers to the user. The method must not update the list. 

You need to create an extendable query by using LINQ. 

What should you do? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: C 


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Q54. - (Topic 2) 

You need to write a method that retrieves data from a Microsoft Access 2013 database. The method must meet the following requirements: 

Be read-only. 

Be able to use the data before the entire data set is retrieved. 

Minimize the amount of system overhead and the amount of memory usage. 

Which type of object should you use in the method? 

A. DbDataReader 

B. DataContext 

C. unTyped DataSet 

D. DbDataAdapter 

Answer: C 

Explanation: DbDataReader Class 

Reads a forward-only stream of rows from a data source. 


Q55. DRAG DROP - (Topic 2) 

You are adding a function to a membership tracking application- The function uses an integer named memberCode as an input parameter and returns the membership type as a string. 

The function must meet the following requirements: 

Return "Non-Member" if the memberCode is 0. 

Return "Member" if the memberCode is 1. 

Return "Invalid" if the memberCode is any value other than 0 or 1. 

You need to implement the function to meet the requirements. 

How should you complete the relevant code? (To answer, drag the appropriate statements to the correct locations in the answer area. Each statement 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: 


Q56. DRAG DROP - (Topic 1) 

You are developing an application by using C#. The application will process several objects per second. 

You need to create a performance counter to analyze the object processing. 

Which three actions should you perform in sequence? (To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.) 

Answer: 


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Q57. - (Topic 2) 

You are creating an application that reads from a database. 

You need to use different databases during the development phase and the testing phase by using conditional compilation techniques. 

What should you do? 

A. Configure the Define TRACE constant setting in Microsoft Visual Studio. 

B. Decorate the code by using the [DebuggerDisplay("Mydebug")] attribute. 

C. Configure the Define DEBUG constant setting in Microsoft Visual Studio. 

D. Disable the strong-name bypass feature of Microsoft .NET Framework in the registry. 

Answer: C 

Explanation: Use one debug version to connect to the development database, and a standard version to connect to the live database. 


Q58. - (Topic 1) 

You are developing an application by using C#. 

The application includes an object that performs a long running process. 

You need to ensure that the garbage collector does not release the object's resources until 

the process completes. 

Which garbage collector method should you use? 

A. ReRegisterForFinalize() 

B. SuppressFinalize() 

C. Collect() 

D. WaitForFullGCApproach() 

Answer: B 


Q59. - (Topic 2) 

You need to write a method that combines an unknown number of strings. The solution must minimize the amount of memory used by the method when the method executes. 

What should you include in the code? 

A. The String.Concat method 

B. The StringBuilder.Append method 

C. The + operator 

D. The += operator 

Answer: A 

Explanation: A: String.Concat Method Concatenates one or more instances of String, or the String representations of the values of one or more instances of Object. 


Q60. - (Topic 2) 

You are developing a C# application. The application references and calls a RESTful web service named EmployeeService. The EmployeeService web service includes a method named GetEmployee, which accepts an employee ID as a parameter. The web service returns the following JSON data from the method. 

{"Id":1,"Name":"David Jones"> 

The following code segment invokes the service and stores the result: 

You need to convert the returned JSON data to an Employee object for use in the application. 

Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: C 



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