Microsoft 98-372 Online Practice Questions and Exam Preparation

Microsoft 98-372 Online Questions & Answers

• Question 1:

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

  A. Doc1.CreateAttribute("EmployeeId", "A23");
  B. Doc1.DocumentElement.SetAttribute("Employeeld","A23");
  C. Doc1.CreateNode("EmployeeId", "A23", "");
  D. Doc1.CreateElement("Employeeld","A23");
  B. Doc1.DocumentElement.SetAttribute("Employeeld","A23");

  ---

  The XmlElement.SetAttribute method sets the value of the specified attribute.

• Question 2:

  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?

  A. Before opening the file
  B. Before writing the entry
  C. After writing the entry
  D. When opening the file
  C. After writing the entry

  ---

  The Stream.Flush method clears all buffers for this stream and causes any buffered data to be written to the underlying device.

• Question 3:

  Your application requests FileIOPermission to open a file.

  The permission is denied. Which type of exception will be thrown?

  A. IOException
  B. SecurityException
  C. ArgumentException
  D. VerificationException
  B. SecurityException

  ---

  Example:

  FileIOPermission f = new FileIOPermission(PermissionState.None); f.AllLocalFiles = FileIOPermissionAccess.Read;

  try

  {

  f.Demand();

  }

  catch (SecurityException s)

  {

  Console.WriteLine(s.Message);

  }

• Question 4:

  You want to substitute values in a string that is displayed on the console.

  Which code fragment will display "Hello, World"?

  A. Console.WriteLine("Hello, [0]", "World")
  B. Console.WriteLir.e ("Hello, {0}", "World")
  C. Console.WriteLine("Hello, (0)", "World")
  D. Console.WriteLine("Hello, ", "World")
  B. Console.WriteLir.e ("Hello, {0}", "World")

• Question 5:

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

  

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

• Question 6:

  Which two classes in the .NET Framework can you use to open a file? (Each correct answer presents a complete solution. Choose two.)

  A. System.IO.FileInfo
  B. System.IO.File
  C. System.IO.Path
  D. System.IO.Stream
  A. System.IO.FileInfo
  B. System.IO.File

  ---

  A: System.IO.FileInfo provides properties and instance methods for the creation, copying, deletion, moving, and opening of files, and aids in the creation of FileStream objects.

  B: System.IO.File provides static methods for the creation, copying, deletion, moving, and opening of files, and aids in the creation of FileStream objects.

  Incorrect:

  Not D: System.IO.FileStream exposes a Stream around a file, supporting both synchronous and asynchronous read and write operations.

• Question 7:

  Which feature is available in both Microsoft Visual Basic .NET and C#?

  A. Static classes
  B. Named and optional arguments in methods
  C. Use of code that is not case-sensitive
  D. Use of code that is not type-safe
  B. Named and optional arguments in methods

• Question 8:

  Type-safe code prevents:

  A. Slow performance.
  B. Namespace conflicts.
  C. Format exceptions.
  D. Unauthorized memory access.
  D. Unauthorized memory access.

  ---

  Type-safe code accesses only the memory locations it is authorized to access.

• Question 9:

  Which standard allows data types to be interchanged among all Common Language Infrastructure (CLI) programming languages?

  A. Virtual Execution System (VES)
  B. Common Type System (CTS)
  C. Microsoft Intermediate Language (MSIL)
  D. Common Intermediate Language System (CILS)
  B. Common Type System (CTS)

• Question 10:

  What is the characteristic of a delegate?

  A. A tightly coupled event
  B. An object that raises an event
  C. A type-safe function pointer
  D. A property function that includes optional parameters
  C. A type-safe function pointer

  ---

  The .NET Framework defines a special type (Delegate) that provides the functionality of a function pointer.

  A delegate is a class that can hold a reference to a method. Unlike other classes, a delegate class has a signature, and it can hold references only to methods that match its signature. A delegate is thus equivalent to a type-safe function pointer or a callback.