Deck 1: Java Programming: HTTP Protocol, Scripting Tasks, and Data Access

Question 1

The __________tier processes HTTP protocol, scripting tasks, performs calculations, and provides access to data.

A) Client
B) Applications/Web server
C) Enterprise server
D) DBA

Answer 1

Client

Question 2

_________ are used to identify a user who returns to a Website.

A) Cookies
B) Plug-ins
C) Scripts
D) ASPs

Answer 2

Cookies

Question 3

Which one of the following objects is passed to a Java Bean when one of its properties is set via a JSP action?

A) Servlet Request
B) Http Servlet Request
C) Servlet Response
D) Http Servlet Response

Answer 3

Servlet Response

Question 4

Struts framework is based on

A) Servlet. JSP and Java
B) Servlet,. HTML and Java
C) Servlet JSP, XML and Java
D) Applet, XML and Java

Question 5

Action Servlet, Request Processor and Action classes are the components of

A) View
B) Model
C) Deployment
D) Controller

Question 6

Which of the following delegates the request handling to the Request Processor instance?

A) Action Servlet
B) Action class
C) Deployment descriptor
D) None of the above

Question 7

How many instances can be created per application module by the Request Processor class?

A) Four
B) Three
C) One
D) Uncountable instances

Question 8

An instance of Action is invoked by

A) ActionServlet
B) ActionListener
C) RequestProcessor
D) All of above

Question 9

What declarations are required for every Java application?

A) A class and the main( ) method declarations.
B) A class with void method
C) A class with main method
D) A class with init method

Question 10

What is a compilation unit?

A) Java Byte code
B) Java source code file
C) Source code
D) Java Exe

Question 11

In order for a source code file, containing the public class Test, to successfully compile, which of the following must be true?

A) It must have a package statement
B) It must be named Test. java
C) It must import java. lang
D) It must declare a public class named Test

Question 12

What are identifiers and what is naming convention?

A) Identifiers are used for class names
B) Identifiers are used for class names, method names
C) Identifiers are used for class names, method names and variable names.
D) None of above

Question 13

What is the return type of program's main( ) method?

A) Void main()
B) Init
C) Void
D) Run

Question 14

What is the value of a[3] as the result of the following array declaration?

A) 1
B) 2
C) 3
D) 4

Question 15

Which of the following are primitive types?

A) byte
B) String
C) integer
D) Float

Question 16

What is the range of the char type?

A) 0 to 216
B) 0 to 215
C) 0 to 216-1
D) 0 to 215-1

Question 17

What are primitive data types?

A) byte, short, int, long
B) float, double
C) boolean
D) char

Question 18

What are default values of different primitive types?

A) int - 0
B) short - 0
C) byte - 0
D) long - 0 l

Question 19

How do we change the values of the elements of the array?

A) The array expression
B) The array subscript expression can be used to change the values of the elements of the array.
C) The definition of element
D) The definition & declaration of element array

Question 20

Which of the following features are common to both Java & C++?

A) The class declaration
B) The access modifiers
C) The encapsulation of data & methods with in objects
D) All of above

Question 21

Which of the following statements accurately describe the use of access modifiers within a class definition?

A) They can be applied to both data & methods
B) They must precede a class's data variables or methods
C) They can appear in any order
D) All of above

Question 22

Which of the following statements can be used to describe a public method?

A) It is accessible to all other classes in the hierarchy
B) It represents the public interface of its class
C) All of above
D) None of these

Question 23

Which of the following statements correctly describes the relation between an object and the instance variable it stores?

A) Each new object has its own distinctive set of instance variables
B) Each object has a copy of the instance variables of its class
C) The instance variable of each object are separate from the variables of other objects
D) All of above

Question 24

What are the functions of the dot(. ) operator?

A) It enables you to access instance variables of any objects within a class
B) It enables you to store values in instance variables of an object
C) It is used to call object methods
D) All of above

Question 25

When may a constructor be called without specifying arguments?

A) When the default constructor is not called
B) When the name of the constructor differs from that of the class
C) When there are no constructors for the class
D) None of above