Microsoft 70-483 Online Practice Questions and Exam Preparation

Microsoft 70-483 Online Questions & Answers

• Question 201:

  You are developing code for an application that retrieves information about Microsoft .NET Framework assemblies.

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

  

  You need to insert code at line 04. The code must load the assembly. Once the assembly is loaded, the code must be able to read the assembly metadata, but the code must be denied access from executing code from the assembly. Which code segment should you insert at line 04?

  A. Assembly.ReflectionOnlyLoadFrom(bytes);
  B. Assembly.ReflectionOnlyLoad(bytes);
  C. Assembly.Load(bytes);
  D. Assembly.LoadFrom(bytes);
  B. Assembly.ReflectionOnlyLoad(bytes);

  ---

  The Assembly.ReflectionOnlyLoad method (Byte[]) loads the assembly from a common object file format (COFF)-based image containing an emitted assembly. The assembly is loaded into the reflection-only context of the caller's application

  domain. You cannot execute code from an assembly loaded into the reflection-only context.

  Incorrect:

  Not A: The Assembly.ReflectionOnlyLoadFrom method (String) loads an assembly into the reflection-only context, given its path.

  Reference: Assembly.ReflectionOnlyLoad Method (Byte[]) https://msdn.microsoft.com/en-us/library/h55she1h(v=vs.110).aspx

• Question 202:

  HOTSPOT

  You have the following code.

  

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

  Hot Area:

  

  

• Question 203:

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

  

  When you execute the code, you get an exception.

  You need to ensure that B_Products contain all of the products that start with the letter "B".

  What should you do?

  

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

  ---

  Simply select the product items.

• Question 204:

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

  

  The application fails at line 17 with the following error message: "An item with the same key has already been added."

  You need to resolve the error.

  Which code segment should you insert at line 16?

  

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

  ---

  The dictionary.ContainsKey method (TKey) determines whether the Dictionary contains the specified key.

  Reference: Dictionary.ContainsKey Method (TKey)

  https://msdn.microsoft.com/en-us/library/kw5aaea4(v=vs.110).aspx

• Question 205:

  You are developing an application in C#.

  The application uses exception handling on a method that is used to execute mathematical calculations by using integer numbers.

  You write the following catch blocks for the method (line numbers are included for reference only):

  

  You need to add the following code to the method:

  

  At which line should you insert the code?

  A. 01
  B. 03
  C. 05
  D. 07
  A. 01

  ---

  Use the most specific exception first.

• Question 206:

  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
  B. Action
  C. Func
  D. Func
  C. Func

  ---

  The Func delegate encapsulates a method that has one parameter and returns a value of the type specified by the TResult parameter. Reference: https://msdn.microsoft.com/en-us/library/bb549151(v=vs.110).aspx

• Question 207:

  HOTSPOT

  You are developing an application in C#.

  You need to implement a custom exception for the application.

  You have the following code.

  

  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 208:

  You are implementing a new method named ProcessData. The ProcessData() method calls a third-party component that performs a long-running operation to retrieve stock information from a web service.

  The third party component uses the IAsyncRcsult pattern to signal completion of the long- running operation so that the UI can be updated with the new values.

  You need to ensure that the calling code handles the long-running operation as a 5ystem.Threading_Tasks.Task object to avoid blocking the Ul thread.

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

  Choose two.)

  A. Apply the async modifier to the ProcessData() method signature.
  B. Call the component by using the TaskFactory FromAsync() method.
  C. Apply the following attribute to the ProcessDataO method signature:[Methodlmpl (MetrhodlmplOptiions . Synchronized) ]
  D. Create a TaskCompletionSource object.
  B. Call the component by using the TaskFactory FromAsync() method.
  D. Create a TaskCompletionSource object.

• Question 209:

  You are developing an application that will parse a large amount of text.

  You need to parse the text into separate lines and minimize memory use while processing data.

  Which object type should you use?

  A. DataContractSerializer
  B. StringBuilder
  C. StringReader
  D. JsonSerializer
  C. StringReader

  ---

  There are many ways to separate a string into lines. With StringReader, we read lines from a string individually in the order they appear. This type enables us to access string data through a stream-oriented interface. Reference: http://www.dotnetperls.com/stringreader

• Question 210:

  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