Oracle 1Z0-850 Online Practice Questions and Exam Preparation

Oracle 1Z0-850 Online Questions & Answers

• Question 31:

  Which two are true about javax.swing? (Choose two.)

  A. It includes classes for creating buttons and panels.
  B. It is used to create MIDlets.
  C. It is used to create applications that have the same user interface on different platforms.
  D. It uses the native GUI components of each platform.
  A. It includes classes for creating buttons and panels.
  C. It is used to create applications that have the same user interface on different platforms.

• Question 32:

  Which two packages are used to create GUI programs in J2SE? (Choose two.)

  A. java.util
  B. javax.swing
  C. java.io
  D. java.net
  E. java.awt
  B. javax.swing
  E. java.awt

• Question 33:

  Which statement is true?

  A. JMS enables an application to provide flexible, asynchronous data exchange.
  B. JMS provides interfaces to naming and directory services.
  C. The JMS API is located in the java.jms package.
  D. JMS enables an application to provide tightly coupled, distributed communication.
  A. JMS enables an application to provide flexible, asynchronous data exchange.

• Question 34:

  Which is NOT a characteristic of Swing?

  A. Swing components can display a platform-independent "look and feel."
  B. Swing components are available in all web browsers.
  C. Swing components can be used to develop J2EE client applications.
  D. Swing components can display a platform-specific "look and feel."
  B. Swing components are available in all web browsers.

• Question 35:

  What is the purpose of JNDI?

  A. to access various directory services using a single interface
  B. to access native code from a Java application
  C. to register Java Web Start applications with a web server
  D. to parse XML documents
  A. to access various directory services using a single interface

• Question 36:

  You are asked to create code that defines a Beverage, and includes method implementation code for some beverage behaviors. Beverage subtypes will be required to provide implementations of some, but not all, of the methods defined in

  Beverage.

  Which approach correctly implements these goals?

  A. Create an abstract Beverage class that defines only abstract methods.
  B. Create a Beverage interface that all beverage subtypes must implement.
  C. Create an abstract Beverage class that defines both abstract and concrete methods.
  D. Create a concrete Beverage class that defines both abstract and concrete methods.
  C. Create an abstract Beverage class that defines both abstract and concrete methods.

• Question 37:

  Click the Exhibit button. Which, inserted at line 3 of the TestDrink class, demonstrates the "program to an interface" principle?

  A. Drinkable aDrink = DrinkableFactory.getDrinkable();
  B. Drinkable aDrink = new Drinkable();
  C. Tea aDrink = new Drinkable();
  D. Tea aDrink = new Tea();
  A. Drinkable aDrink = DrinkableFactory.getDrinkable();

• Question 38:

  Which two are true about composition relationships? (Choose two.)

  A. Composition relationships are never one-to-many.
  B. Composition relationships can be one-to-many.
  C. Composition relationships are used to show exclusive ownership.
  D. Composition relationships are always many-to-many.
  E. Composition relationships are never used when an object is owned by exactly one other object.
  B. Composition relationships can be one-to-many.
  C. Composition relationships are used to show exclusive ownership.

• Question 39:

  Which two, about a client's environment, can be determined by an applet? (Choose two.)

  A. type of web browser
  B. type of web container
  C. type of web server
  D. version of Java Plug-in
  A. type of web browser
  D. version of Java Plug-in

• Question 40:

  Click the Exhibit button. Which is true?

  

  A. Juku is a subclass of Hara.
  B. Every Juku has a reference to at least one Hara.
  C. Juku is a subclass of Hara and at least one other class.
  D. This is NOT a valid UML diagram.
  E. Juku implements the Hara interface.
  D. This is NOT a valid UML diagram.