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java Online Quiz - 10

Description: java Online Quiz - 10
Number of Questions: 18
Created by:
Tags: java

_________ defines how the component will be arranged in the container

  1. layout manager

  2. outline manager

  3. component design

  4. component manager

Answer: 1

­­_______ is the ability to do multiple tasks at the same time

  1. multithreading

  2. multitasking

  3. multiprograming

  4. multiprocessing

Answer: 1

which symbol denotes current working directory?

  1. . (dot)

  2. !

  3. %

  4. *

Answer: 1

what does the symbol means in java?

  1. logical NOT

  2. logical OR

  3. logical AND

  4. logical XOR

Answer: 1

Which of the following java doesnt support?

  1. signed number

  2. unsigned number

  3. signed right shift

  4. unsigned left shift

Answer: 2

what is the output of the following program

  1. 0

  2. -1

  3. -2

  4. compiler error

Answer: 3

which is the first web browser developed in java

  1. internet explorer

  2. Netscape Navigator

  3. Hotjava

  4. Opera

Answer: 4

What is the output of the program?

  1. 13

  2. 15

  3. 0

  4. Compiler error

Answer: 4

What is private cloud?

  1. A standard cloud service offered via the Internet

  2. A cloud architecture maintained within an enterprise data center.

  3. A cloud service inaccessible to anyone but the cultural elite

  4. none of these

Answer: 2

Which of the following is true of cloud computing?

  1. It's always going to be less expensive and more secure than local computing.

  2. You can access your data from any computer in the world as long as you have an Internet connection.

  3. Only a few small companies are investing in the technology, making it a risky venture.

  4. none of these

Answer: 2

In a multitiered application, which tier is the browser in?

  1. First tier.

  2. Second tier.

  3. Third tier.

  4. Fourth tier

Answer: 1

How are life cycle methods called?

  1. By thin clients.

  2. By calls to the database.

  3. By the J2EE server.

  4. By the bean's container.

Answer: 3

What is bean-managed persistence?

  1. When you implement entity or session bean methods to use SQL commands you provide.

  2. When the bean's container handles data storage and retrieval.

  3. When the J2EE server is never shut down

  4. When changes to database data are lost during a crash.

Answer: 1

What part of the J2EE platform handles data storage and retrieval on behalf of a container-managed entity bean?

  1. The thin client.

  2. Deployment descriptors.

  3. The JAR file.

  4. The bean's container

Answer: 4

Why is XML a good way to transfer text-based data from one program or tool to another?

  1. XML imposes important limitations on the receiving program or tool.

  2. The receiving program or tool can use the XML tagging information to determine how to best handle the incoming data.

  3. XML tags offer an extra level of security

  4. XML tags specify to the receiving program or tool exactly how to format and display the data.

Answer: 2

Why would you design a J2EE application so user data is entered by way of a JavaServer Page and managed by an underlying JavaBeans class?

  1. To make the user interface more interesting.

  2. To simplify application deployment.

  3. To prevent malicious programs from gaining access to sensitive information on your database server.

  4. To make the application much easier to update, maintain, and manage.

Answer: 4

When do you use a session bean?

  1. When you want to be certain your application data persists between program invocations, even in the event of a crash.

  2. If you need to initiate a database transaction.

  3. To process transient data that can be re-created in the event of a crash.

  4. To keep people who do not know how to program from accidentally changing important logic code

Answer: 3

What advantage does an entity bean have over a session bean?

  1. Entity bean data survives crashes.

  2. An entity bean represents non-persistent data.

  3. It creates its own JAR file during deployment.

  4. You get authentication code without having to write any.

Answer: 1
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