Deck 4

Question 1

Your application requests FileIOPermission to open a file. The permission is denied. Which type of exception will be thrown?

Answer 1

SecurityException

Question 2

An event declaration is shown in the following code segment. Public event NewProduccEventHandlerNewProduct; What is NewProductEventHandler in the event declaration?

Answer 2

The name of the delegate that will dispatch the event.

Question 3

Which two types of actions can trigger an event? (Each correct answer presents a complete solution. Choose two.)

Answer 3

User intervention, such as a mouse click.
—–AND—–
Declaring the signature of the delegate.

Question 4

You need to handle only SqlException exceptions. You also need to ensure that any other exception flows back to the calling code. Which code segment should you use?

Answer 4

try
   {
   }
catch (SqlException)
   {
   }

Question 5

You write a method named DoWork. You need to log all exceptions that occur inside DoWork. You also need to ensure that all exceptions are raised to the calling code. Which code segment should you use?

Answer 5

private void DoWork()
{
   try
   {
      //Method body
   }
catch (Exception exc)
   {
      //Insert code to log exception here
      throw exc;
   }
}

Question 6

Connection strings in the web.config file are:

Answer 6

Stored in clear text unless they are encrypted.

Question 7

In which file does a .NET Windows application store information that has been customized for a particular instance of the application?

Answer 7

User.config

Question 8

You need to force the position of the cursor on the screen at (15, 10). Which code segment should you use?

Answer 8

Console.SetCursorPosition(15, 10);

Console.ReadKey();

Question 9

You create a program that writes a status message to a file every 10 seconds. You need to ensure that all data is written to the file before the file is closed. When should you call the Flush() method?

Answer 9

After writing the entry

Question 10

You want to insert a new line on the console. Which three code fragments will display “Hello” followed by a new line? (Each correct answer presents a complete solution. Choose three.)

Answer 10

Console.Write("Hello\n");
-----AND-----
Console.Error.WriteLine ("Hello");
-----AND-----
Console.WriteLine("Hello");

Question 11

Which method will be called when a FileStream is collected by the garbage

Answer 11

Finalize

Question 12

You create a class that does not explicitly inherit from any base class. Which is the implied base type of the class?

Answer 12

Object

Question 13

You create an ArrayList object. You need to ensure that only objects of the System.DateTime type can be added to the collection. What should you do?

Answer 13

Use a List collection.

Question 14

Which code segment prevents the class named Final from being inherited?

Answer 14

partial class Final
{
}

Question 15

You use code from different companies. You need to avoid naming conflicts within your code. What should you do?

Answer 15

Deploy the classes as two separate files.

Question 16

You need to create a DLL that contains classes that can be reused in other projects. Which type of Microsoft Visual Studio project should you use?

Answer 16

Class Library

Question 17

Which two actions are performed by the .NET Version class? (Choose two.)

Answer 17

Returns the version number of an assembly.
—–AND—–
Returns the version number of the Common Language Runtime.

Question 18

Which class should you use to perform a search of an XML document?

Answer 18

XmlNode

Question 19

You load an XML document named doc1 that has an attribute named EmployeeId. Which code fragment will set the value of EmployeeId to A23?

Answer 19

Doc1.CreateElement(“Employeeld”,”A23”);

Question 20

You create a custom exception class named MyCustomException that is derived from ApplicationException. Which code segment should you use to raise MyCustomException?

Answer 20

catch (Exception exc)
{
throw new MyCustomException (exc);
}