Microsoft Microsoft Certifications 98-361 Questions & Answers

• Question 91:

  Two classes named Circle and Square inherit from the Shape class. Circle and Square both inherit Area from the Shape class, but each computes Area differently.

  Which term is used to describe this object-oriented concept?

  A. encapsulation

  B. superclassing

  C. polymorphism

  D. overloading

  Correct Answer: C

  You can use polymorphism to in two basic steps:

  Create a class hierarchy in which each specific shape class derives from a common base class. Use a virtual method to invoke the appropriate method on any derived class through a single call to the base class method.

• Question 92:

  Which term is used to describe a class that inherits functionality from an existing class?

  A. Superclass

  B. Base class

  C. Inherited class

  D. Derived class

  Correct Answer: D

  Classes (but not structs) support the concept of inheritance. A class that derives from another class (the base class) automatically contains all the public, protected, and internal members of the base class except its constructors and destructors.

• Question 93:

  A class named Manager is derived from a parent class named Employee. The Manager class includes characteristics that are unique to managers.

  Which term is used to describe this object-oriented concept?

  A. inheritance

  B. data modeling

  C. data hiding

  D. encapsulation

  Correct Answer: A

  Classes (but not structs) support the concept of inheritance. A class that derives from another class (the base class) automatically contains all the public, protected, and internal members of the base class except its constructors and

  destructors.

  Incorrect:

  not D: Encapsulation is sometimes referred to as the first pillar or principle of object-oriented programming. According to the principle of encapsulation, a class or struct can specify how accessible each of its members is to code outside of the

  class or struct. Methods and variables that are not intended to be used from outside of the class or assembly can be hidden to limit the potential for coding errors or malicious exploits.

• Question 94:

  You need to ensure the data integrity of a database by resolving insertion, update, and deletion anomalies. Which term is used to describe this process in relational database design?

  A. Normalization

  B. Integration

  C. Isolation

  D. Resolution

  Correct Answer: A

  Database normalization is the process of organizing the fields and tables of a relational database to minimize redundancy. Normalization usually involves dividing large tables into smaller (and less redundant) tables and defining relationships between them. The objective is to isolate data so that additions, deletions, and modifications of a field can be made in just one table and then propagated through the rest of the database using the defined relationships.

• Question 95:

  You are creating an application for computers that run Windows XP or later. This application must run after the computer starts. The user must not be aware that the application is running.

  The application performs tasks that require permissions that the logged-in user does not have.

  Which type of application allows this behavior?

  A. Windows Forms application

  B. DOS batch file

  C. Terminate-and-stay-resident (TSR) program

  D. Windows Service application

  Correct Answer: D

• Question 96:

  An application presents the user with a graphical interface. The interface includes buttons that the user clicks to perform tasks. Each time the user clicks a button, a method is called that corresponds to that button. Which term is used to describe this programming model?

  A. Event driven

  B. Structured

  C. Service oriented

  D. Functional

  Correct Answer: A

• Question 97:

  How does a console-based application differ from a Windows Forms application?

  A. Windows Forms applications can access network resources.

  B. Console-based applications do not display a graphical interface.

  C. Console-based applications require the XNA Framework to run.

  D. Windows Forms applications do not provide a method for user input.

  Correct Answer: B

• Question 98:

  Which type of Windows application presents a parent window that contains child windows?

  A. Multiple-document interface (MDI)

  B. Command-line interface (CLI)

  C. Single-document interface (SDI)

  D. Application programming interface (API)

  Correct Answer: A

  A multiple document interface (MDI) is a graphical user interface in which multiple windows reside under a single parent window. Such systems often allow child windows to embed other windows inside them as well, creating complex nested hierarchies. This contrasts with single document interfaces (SDI) where all windows are independent of each other.

• Question 99:

  The purpose of the Catch section in an exception handler is to:

  A. Conclude the execution of the application.

  B. Break out of the error handler.

  C. Execute code only when an exception is thrown.

  D. Execute code regardless of whether an exception is thrown.

  Correct Answer: C

• Question 100:

  You execute the following code.

  

  How many times will the word Hello be printed?

  A. 5

  B. 6

  C. 10

  D. 12

  Correct Answer: B