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Q101. – (Topic 1) 

You are developing an application that includes a class named BookTracker for tracking library books. The application includes the following code segment. (Line numbers are included for reference only.) 

You need to add a user to the BookTracker instance. What should you do? A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Q102. – (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:

Q103. – (Topic 2) 

You have the following code (line numbers are included for reference only): 

You need to ensure that new instances of Connection can be created only by other classes by calling the Create method. The solution must allow classes to inherit from Connection. 

What should you do? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: The following list provides the main features of a static class: 

* Contains only static members. 

* Cannot be instantiated. 

* Is sealed. 

* Cannot contain Instance Constructors. 

Creating a static class is therefore basically the same as creating a class that contains only static members and a private constructor. A private constructor prevents the class from being instantiated. 

Reference: Static Classes and Static Class Members (C# Programming Guide) 

https://msdn.microsoft.com/en-us/library/79b3xss3.aspx 

Q104. – (Topic 1) 

You have the following code (line numbers are included for reference only): 

You need to identify the missing line of code at line 15. Which line of code should you identify? 

A. using (fooSqlConn.BeginTransaction()) 

B. while (fooSqlReader.Read()) 

C. while (fooSqlReader.NextResult()) 

D. while (fooSqlReader.GetBoolean(0)) 

Answer:

Q105. – (Topic 2) 

You are developing an application that uses multiple asynchronous tasks to optimize performance. The application will be deployed in a distributed environment. 

You need to retrieve the result of an asynchronous task that retrieves data from a web service. 

The data will later be parsed by a separate task. Which code segment should you use? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Q106. – (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 

Q107. – (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 

Q108. – (Topic 2) 

You are developing a class named Scorecard. The following code implements the Scorecard class. (Line numbers are included for reference only.) 

You create the following unit test method to test the Scorecard class implementation: 

You need to ensure that the unit test will pass. What should you do? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Q109. – (Topic 1) 

You are debugging an application that calculates loan interest. The application includes the following code. (Line numbers are included for reference only.) 

You have the following requirements: 

. The debugger must break execution within the Calculatelnterest() method when the loanAmount variable is less than or equal to zero. . The release version of the code must not be impacted by any changes. 

You need to meet the requirements. 

What should you do? 

A. Insert the following code segment at tine 05: Debug.Write(loanAmount > 0); 

B. Insert the following code segment at line 05: Trace.Write(loanAmount > 0); 

C. Insert the following code segment at line 03: Debug.Assert(loanAmount > 0); 

D. Insert the following code segment at line 03: Trace.Assert(loanAmount > 0); 

Answer:

Explanation: 

By default, the Debug.Assert method works only in debug builds. Use the Trace.Assert method if you want to do assertions in release builds. For more information, see Assertions in Managed Code. http://msdn.microsoft.com/en-us/library/kssw4w7z.aspx 

Q110. – (Topic 2) 

You are writing the following method (line numbers are included for reference only): 

You need to ensure that CreateObject compiles successfully. 

What should you do? 

A. Insert the following code at line 02: where T : new() 

B. Replace line 01 with the following code: public void CreateObject<T>() 

C. Replace line 01 with the following code: public Object CreateObject<T>() 

D. Insert the following code at line 02: where T : Object 

Answer:

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