Microsoft 70-483 Online Practice Questions and Exam Preparation

Microsoft 70-483 Online Questions & Answers

• Question 1:

  You have the following line of code. Type type1 = typeof^MyClass); You need to create an object named obj that has a type of type1. Which line of code should you use?

  A. object obj = Activator .Createlnstance( "type 1" .GetType()) ;
  B. type1 obj = Activator.Createlnstance(typel);
  C. type1 obj = Activator.Createlnstance( "type1" .GetType());
  D. object obj = Activator.Createlnstance(typ1);
  B. type1 obj = Activator.Createlnstance(typel);

• Question 2:

  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. RemoveMemoryPressure()
  B. ReRegisterForFinalize()
  C. WaitForFullGCComplete()
  D. KeepAlive()
  D. KeepAlive()

  ---

  The purpose of the KeepAlive method is to ensure the existence of a reference to an object that is at risk of being prematurely reclaimed by the garbage collector.

  Reference: GC.KeepAlive Method (Object)

  https://msdn.microsoft.com/en-us/library/system.gc.keepalive(v=vs.110).aspx

• Question 3:

  DRAG DROP

  You are developing an application that will populate an extensive XML tree from a Microsoft SQL Server 2008 R2 database table named Contacts.

  You are creating the XML tree. The solution must meet the following requirements:

  

  Minimize memory requirements.

  

  Maximize data processing speed.

  You open the database connection. You need to create the XML tree.

  How should you complete the relevant 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 4:

  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
  C. Option C

• Question 5:

  You are creating a console application named App1.

  App1 retrieves data from the Internet by using JavaScript Object Notation (JSON).

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

  

  You need to ensure that the code validates the JSON string.

  

  Which code should you insert at line 03?

  A. DataContractSerializer serializer = new DataContractSerializer();
  B. var serializer = new DataContractSerializer();
  C. XmlSerlalizer serializer = new XmlSerlalizer();
  D. var serializer = new JavaScriptSerializer();
  D. var serializer = new JavaScriptSerializer();

  ---

  JavaScriptSerializer().Deserialize

  Converts the specified JSON string to an object of type T.

  Example:

  string json = File.ReadAllText(Environment.CurrentDirectory + @"\JSON.txt");

  Company company = new System.Web.Script.Serialization.JavaScriptSerializer().Deserialize(

  Reference: C# - serialize object to JSON format using JavaScriptSerializer

  http://matijabozicevic.com/blog/csharp-net-development/csharp-serialize-object-to-json-format-using-javascriptserialization

• Question 6:

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

  

  You create the following unit test method to test the EmployeeRoster 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
  B. Option B

• Question 7:

  HOTSPOT

  You have the following code:

  

  Use the drop-down lists to select the answer choice that completes each statement.

  Hot Area:

  

  

• Question 8:

  You have the following code:

  

  You need to retrieve all of the numbers from the items variable that are greater than 80. Which code should you use?

  

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

• Question 9:

  You are creating a class library that will be used in a web application. You need to ensure that the class library assembly is strongly named. What should you do?

  A. Use assembly attributes.
  B. Use the EdmGen.exe command-line tool.
  C. Set the configuration mode to Release when building the application.
  D. Use the gacutil.exe command-line tool.
  A. Use assembly attributes.

• Question 10:

  You need to create a method that can be called by using a varying number of parameters. What should you use?

  A. Method overloading
  B. Interface
  C. Named parameters
  D. Lambda expressions
  A. Method overloading

  ---

  Member overloading means creating two or more members on the same type that differ only in the number or type of parameters but have the same name. Overloading is one of the most important techniques for improving usability, productivity, and readability of reusable libraries. Overloading on the number of parameters makes it possible to provide simpler versions of constructors and methods. Overloading on the parameter type makes it possible to use the same member name for members performing identical operations on a selected set of different types.