Microsoft 70-483 ExamProgramming in C#

Total Question: 236 Last Updated: March 27,2017
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Tips to Pass 70-483 Exam (81 to 90)

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Q81. - (Topic 1) 

You are developing an application that includes the following code segment. (Line numbers are included for reference only.) 

You need to ensure that the application accepts only integer input and prompts the user each time non-integer input is entered. 

Which code segment should you add at line 19? 

A. If (!int.TryParse(sLine, out number)) 

B. If ((number = Int32.Parse(sLine)) == Single.NaN) 

C. If ((number = int.Parse(sLine)) > Int32.MaxValue) 

D. If (Int32.TryParse(sLine, out number)) 

Answer:

Explanation: 

B and C will throw exception when user enters non-integer value. D is exactly the opposite what we want to achieve. 

Int32.TryParse - Converts the string representation of a number to its 32-bit signed integer equivalent. A return value indicates whether the conversion succeeded. http://msdn.microsoft.com/en-us/library/f02979c7.aspx 


Q82. HOTSPOT - (Topic 1) 

You are developing an application that includes a Windows Communication Foundation (WCF) service. The service includes a custom TraceSource object named ts and a method named DoWork. The application must meet the following requirements: 

. Collect trace information when the DoWork() method executes. . Group all traces for a single execution of the DoWork() method as an activity that can be viewed in the WCF Service Trace Viewer Tool. 

You need to ensure that the application meets the requirements. 

How should you complete the relevant code? (To answer, select the correct code segment from each drop-down list in the answer area.) 

Answer: 


Q83. - (Topic 1) 

You are developing an application that includes the following code segment. (Line numbers are included for reference only.) 

The GetCustomers() method must meet the following requirements: 

Connect to a Microsoft SQL Server database. 

Populate Customer objects with data from the database. 

Return an IEnumerable<Customer> collection that contains the populated 

Customer objects. 

You need to meet the requirements. 

Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.) 

A. Insert the following code segment at line 17: while (sqlDataReader.GetValues()) 

B. Insert the following code segment at line 14: sqlConnection.Open(); 

C. Insert the following code segment at line 14: sqlConnection.BeginTransaction(); 

D. Insert the following code segment at line 17: while (sqlDataReader.Read()) 

E. Insert the following code segment at line 17: while (sqlDataReader.NextResult()) 

Answer: B,D 

Explanation: 

SqlConnection.Open - Opens a database connection with the property settings specified by the ConnectionString. 

http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlconnection.open.aspx SqlDataReader.Read - Advances the SqlDataReader to the next record. http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqldatareader.read.aspx 


Q84. - (Topic 2) 

You are developing an application. 

You need to declare a delegate for a method that accepts an integer as a parameter, and then returns an integer. 

Which type of delegate should you use? 

A. Action<int> 

B. Action<int, int> 

C. Func<int, int> 

D. Func<int> 

Answer:


Q85. - (Topic 2) 

You have a class named Customer and a variable named customers. 

You need to test whether the customers’ variable is a generic list of Customer objects. Which line of code should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: 

http://stackoverflow.com/questions/982487/testing-if-object-is-of-generic-type-in-c-sharp 


Regenerate 70-483 exam fees:

Q86. HOTSPOT - (Topic 1) 

You have the following code: 

For each of the following statements, select Yes if the statement is true. Otherwise, select No. 

Answer: 


Q87. - (Topic 1) 

You use the Task.Run() method to launch a long-running data processing operation. The data processing operation often fails in times of heavy network congestion. 

If the data processing operation fails, a second operation must clean up any results of the first operation. 

You need to ensure that the second operation is invoked only if the data processing operation throws an unhandled exception. 

What should you do? 

A. Create a TaskCompletionSource<T> object and call the TrySetException() method of the object. 

B. Create a task by calling the Task.ContinueWith() method. 

C. Examine the Task.Status property immediately after the call to the Task.Run() method. 

D. Create a task inside the existing Task.Run() method by using the AttachedToParent option. 

Answer:


Q88. - (Topic 1) 

You have a List object that is generated by executing the following code: 

You have a method that contains the following code (line numbers are included for reference only): 

You need to alter the method to use a lambda statement. How should you rewrite lines 03 through 06 of the method? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:


Q89. 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: 


Q90. - (Topic 1) 

You are developing a C# application that has a requirement to validate some string input data by using the Regex class. 

The application includes a method named ContainsHyperlink. The ContainsHyperlink() method will verify the presence of a URI and surrounding markup. 

The following code segment defines the ContainsHyperlink() method. (Line numbers are included for reference only.) 

The expression patterns used for each validation function are constant. 

You need to ensure that the expression syntax is evaluated only once when the Regex 

object is initially instantiated. 

Which code segment should you insert at line 04? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: 

RegexOptions.Compiled - Specifies that the regular expression is compiled to an assembly.This yields faster execution but increases startup time.This value should not be assigned to the Options property when calling the CompileToAssembly method. http://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regexoptions.aspx Additional info http://stackoverflow.com/questions/513412/how-does-regexoptions-compiled-work 


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