Microsoft 70-483 Online Practice Questions and Exam Preparation

Microsoft 70-483 Online Questions & Answers

• Question 151:

  You are developing an application that includes the following code segment:

  

  You need to implement both Start() methods in a derived class named UseStart that uses the Start() method of each interface. Which two code segments should you use? (Each correct answer presents part of the solution. Choose two.)

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  E. Option E
  F. Option F
  C. Option C
  D. Option D

  ---

  C: Because it explicitly implements the two Start functions of both interfaces.

  D: Because we need to type cast the starter object to the interface that we want to use the implementation for. Reference: Inheritance from multiple interfaces with the same method name http://stackoverflow.com/questions/2371178/inheritance-from-multiple-interfaces-with-the- same-method-name/2371203#2371203

• Question 152:

  You are developing an application.

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

  Which type of delegate should you use?

  A. Func
  B. Action< string, string>
  C. Func< string>
  D. Action< string>
  A. Func

• Question 153:

  You have the following code. (Line numbers are included for reference only).

  

  You need to complete the WriteTextAsync method. The solution must ensure that the code is not blocked while the file is being written. Which code should you insert at line 12?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  D. Option D

  ---

  await sourceStream.WriteAsync(encodedText, 0, encodedText.Length);

  The following example has the statement await sourceStream.WriteAsync(encodedText, 0, encodedText.Length);, which is a contraction of the following two statements:

  Task theTask = sourceStream.WriteAsync(encodedText, 0, encodedText.Length); await theTask;

  Example: The following example writes text to a file. At each await statement, the method immediately exits. When the file I/O is complete, the method resumes at the statement that follows the await statement. Note that the async modifier is

  in the definition of methods that use the await statement.

  public async void ProcessWrite()

  {

  string filePath = @"temp2.txt";

  string text = "Hello World\r\n";

  await WriteTextAsync(filePath, text);

  }

  private async Task WriteTextAsync(string filePath, string text) {

  byte[] encodedText = Encoding.Unicode.GetBytes(text);

  using (FileStream sourceStream = new FileStream(filePath, FileMode.Append, FileAccess.Write, FileShare.None, bufferSize: 4096, useAsync: true))

  {

  await sourceStream.WriteAsync(encodedText, 0, encodedText.Length); };

  }

  Reference: Using Async for File Access (C# and Visual Basic)

  https://msdn.microsoft.com/en-us/library/jj155757.aspx

• Question 154:

  HOTSPOT

  You are developing a method named Method1 for a class named Class1.

  The method receives an integer parameter named Parameter1 and returns to a decimal value.

  You need to ensure that calls to Method1 support being executed on separate threads.

  How should you complete the method signature? To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  

• Question 155:

  DRAG DROP

  You are creating a class named Data that includes a dictionary object named _data.

  You need to allow the garbage collection process to collect the references of the _data object.

  You have the following code:

  

  Which code segments should you include in Target 1 and Target 2 to complete the code? (To answer, drag the appropriate code segments to the correct 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:

  

  

• Question 156:

  You are developing an application that produces an executable named MyApp.exe and an assembly named MyApp.dll.

  The application will be sold to several customers.

  You need to ensure that enough debugging information is available for MyApp.exe, so that if the application throws an error in a customer's environment, you can debug the error in your own development environment.

  What should you do?

  A. Digitally sign MyApp.dll.
  B. Produce program database (PDB) information when you compile the code.
  C. Compile MyApp.exe by using the /unsafe compiler option.
  D. Initializes a new instance of the AssemblyDelaySignAttribute class in the MyApp.dll constructor.
  B. Produce program database (PDB) information when you compile the code.

  ---

  A program database (PDB) file holds debugging and project state information that allows incremental linking of a debug configuration of your program. A PDB file is created when you build with /debug.

  Reference: Program Database Files (C#, F#, and Visual Basic)

  https://msdn.microsoft.com/library/ms241903(v=vs.100).aspx

• Question 157:

  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))
  B. while (fooSqlReader.Read())

  ---

  The SqlDataReader.Read method advances the SqlDataReader to the next record.

  Example:

  SqlCommand command =

  new SqlCommand(queryString, connection);

  connection.Open();

  SqlDataReader reader = command.ExecuteReader();

  // Call Read before accessing data.

  while (reader.Read())

  {

  ReadSingleRow((IDataRecord)reader);

  }

  // Call Close when done reading.

  reader.Close();

  }

  Reference: SqlDataReader.Read Method ()

  https://msdn.microsoft.com/enus/library/system.data.sqlclient.sqldatareader.read(v=vs.110).aspx

• Question 158:

  You are modifying an existing application.

  The application includes a Loan class and a Customer class. The following code segment defines the classes.

  

  You populate a collection named customer-Collection with Customer and Loan objects by using the following code segment:

  

  You create a largeCustomerLoans collection to store the Loan objects by using the following code segment:

  Collection largeCustomerLoans = new Collection();

  All loans with an Amount value greater than or equal to 4000 must be tracked.

  You need to populate the largeCustomerLoans collection with Loan objects.

  Which code segment should you use?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  D. Option D

  ---

  We must add to the largeCustomerLoans collection, not the customerLoanCollection.

  We iterate through each customer in customerCollection and check each loan belonging to this customer.

• Question 159:

  HOTSPOT

  You are creating a C# application named Application1 that will process IoT data from 100,000 devices. Each IoT device can submit hundreds of data transactions per second.

  Application1 runs on Windows Server.

  You need to create a performance counter in Windows Server that will display the number of data transactions processed per second.

  How should you complete the code? To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  

• Question 160:

  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()
  C. Replace line 01 with the following code: public Object CreateObject()
  D. Insert the following code at line 02: where T : Object
  A. Insert the following code at line 02: where T : new()

  ---

  You must require default/empty constructor to successfully call T obj = new T();