Deck 2: EJB, Servlets, and JNDI

Question 1

Which EJB container must provide an implementation of Java Naming and Directory Interface (JNDI) API to provide naming services for EJB clients and components?

A)Transaction support
B)Persistence support
C)Naming support
D)All mentioned above

Answer 1

Naming support

Question 2

EJB is a specification for J2EE server, not a product; Java beans may be a graphical component in IDE.

A)True
B)False
C)none
D)all

Answer 2

True

Question 3

A session bean represents a multiple clients inside the Application Server.

A)True
B)False
C)none
D)all

Answer 3

False

Question 4

Which component does the Entity bean represent the persistent data stored in the database?

A)Server-side component
B)Client-side component
C)server and client side component
D)None of the above

Question 5

EJB is like COM, Abbreviate the term COM?

A)Component Object Model
B)Component Oriented Model
C)Common Object Model
D)Common Oriented Model

Question 6

JMS is also known as a messaging service.

A)True
B)False
C)none
D)all

Question 7

What represents a persistent global data from the database?

A)Entity Bean
B)Session Bean
C)Both A & B
D)None of the above

Question 8

Which component does the Entity bean represents the persistent data stored in the database?

A)Server-side component
B)Client-side component
C)server and client side component
D)None of the above

Question 9

In EJB, middleware services are provided by EJB Container automatically.

A)True
B)False
C)none
D)all

Question 10

Which middleware services are provided by EJB?

A)Security
B)Transaction Management
C)Both A & B
D)None of the above

Question 11

Which server-side component is required to be deployed on the server?

A)EJB
B)RMI
C)Both A & B
D)None of the above

Question 12

Which type of instances retain no data or conversational state for a specific client?

A)Message-Driven Bean
B)Session Bean
C)Entity Bean
D)None of the above

Question 13

EJB technology is built on the top of Socket Programming

A)True
B)False
C)none
D)all

Question 14

How constructor can be used for a servlet?

A)Initialization
B)Constructor function
C)Initialization and Constructor function
D)Setup() method

Question 15

Can servlet class declare constructor with ServletConfig object as an argument?

A)True
B)False
C)none
D)all

Question 16

Java Servletsare efficient and powerful solution for creating ............for the web.

A)dynamic content
B)static content
C)hardware
D)both and b

Question 17

.......... is the first phase of the servlet life cycle.

A)Initialization
B)Service
C)Destruction
D)Both a and b

Question 18

The service phase of the servlet life cycle represents all interactions with requests until the servlet is ...........

A)created
B)running
C)initiated
D)destroyed

Question 19

GET methods are great for sending ..........amounts of information that you do not mind having visible in a URL.

A)negligible
B)huge
C)small
D)both and b

Question 20

Several vendors are adding ........... to their existing database .........

A)JDOBC, middle-ware products
B)JDBC drivers, upper-ware products
C)middle-ware products, JDOBC drivers
D)JDBC drivers, middle-ware products

Question 21

Which of the following code is used to get an attribute in a HTTP Session object in servlets?

A)session.getAttribute(String name)
B)session.alterAttribute(String name)
C)session.updateAttribute(String name)
D)session.setAttribute(String name)

Question 22

A servlet needs to acquire a data source through a JNDI naming lookup. Which of the following is the best place to do this?

A)Constructor
B)init method
C)service method
D)doGet method

Question 23

What's the difference between servlets and applets? a. Servlets executes on Servers, where as

A)Applets executes on Browser
B)Servlets have no GUI, where as an Applet has GUI
C)Servlets creates static web pages, where as Applets creates dynamic web pages
D)Servlets can handle only a single request, where as Applet can handle multiple requests

Question 24

Which of the following code retrieves the body of the request as binary data?

A)DataInputStream data = new InputStream()
B)DataInputStream data = response.getInputStream()
C)DataInputStream data = request.getInputStream()
D)DataInputStream data = request.fetchInputStream()

Question 25

When destroy() method of a filter is called?

A)The destroy() method is called only once at the end of the life cycle of a filter
B)The destroy() method is called after the filter has executed doFilter method
C)The destroy() method is called only once at the begining of the life cycle of a filter
D)The destroyer() method is called after the filter has executed