CS506 Web Design and Development
Which of the following approch is used to create threads in java?
Inheritance]
Interface
Both inheriance and interface (right Answer)
None of these
Why we use RequestDispatcher to forward a request to another resource(servlet, html, jsp), instead of using a sendRedirect()?
sendRedirect() is not supported in servlet API.
RequestDispatcher is not supported in servlet API.
RequestDispatcher is efficient and allows the server to maintain request status.
None of these (right Answer)
Which of the following method of an Applet is called every time when page is minimized?
start()
init()
stop()(right Answer)
destroy()
Which of the following statement is true regarding paintComponent() method?
It tells any components contained by this component to paint themselves.
It tells the component to paint its border.
It first paints the background and then performs custom painting. (right Answer)
It first performs custom painting and then paints the background.
Which of the following is NOT true for an Applet?
A small program written in Java and included in a HTML page.
It is independent of the operating system on which it runs.
They have no access to the client's file system. (right Answer)
An applet is a Panel that allows interaction with a Java program
Which of the following syntax is used to get DataBaseMetaData object?
ResultSetMetaData md = con.getMetaData();
// where con is Connection object
ResultSetMetaData md = rs.getMetaData();
// where rs is ResultSet object (right Answer)
ResultSetMetaData md = st.getMetaData();
// where st is Statement object
ResultSet md = rs.getMetaData();
// where rs is ResultSetMetaDta object
Why we use RequestDispatcher to forward a request to another resource(servlet, html, jsp), instead of using a sendRedirect()?
sendRedirect() is not supported in servlet API.
RequestDispatcher is not supported in servlet API.
RequestDispatcher is efficient and allows the server to maintain request status.
None of these (right Answer)
getColumnCount() is a method of ________ object.
Statement
ResultSet(right Answer)
ResultSetMetaData
DataBaseMetaData
doGet() and doPost() receive ServletRequest and ServletResponse objects as an arguments which facilitate interaction between the client and the server.
True (right Answer)
False
Which of the following method is used to move the cursor to given row number?
absolute(int);
absolute();
moveToInsertRow(int);
insertRow();
Which of the following method of an Applet is called every time when page is minimized?
start()
init()
stop()(right Answer)
destroy()
HTML form data can be processed by JSP
TRUE( right Answer)
FALSE
From the following methods, which method cannot be overridden in the JSP page
_jspService() (right Answer)
jspDestroy()
jspInit()
None of these
Which of the following object is used for sharing resources among different servlets of same application?
ServletConfig
ServletRequest
ServletResponse
Servlet Context (right Answer)
getParameters() method returns an array of strings containing the values for a specified servlet parameter.
TRUE
FALSE(right Answer)
Socket is a ___________ communication channel between hosts.
uni-directional
bi-directional (right Answer)
multi-directional
None of these
setAttribute(String, Object) associates a ----------with a name.
None of these
Object
String
Value
Packages are the way to organize files into different -------------according to their functionality, usability as well as category they should belong to.
Directories (right Answer)
Folders
Libraries
None of these
When JSP page compiled, it is translated into?
Applet
Application
Servlet (right Answer)
Web Browser
From the following which ID is transmitted between the client and the server
Session ID (right Answer)
Network ID
Server ID
None of these
To define the error page in JSP we use following tag?
exception-type
error-type
error-page (right Answer)
exception-page
Which of the following is called Іpure abstract classІ?
Concrete Class (right Answer)
Wrapper Class
Interface
Abstract class with no abstract method
The relationship between class and interface is called ____________
'Is a' relationship
'Has a' relationship
'Responds to' relationship (right Answer)
None of the above given
Which of the following statement object is used to execute simple SQL statement?
Statement
PreparedStatement
CallableStatement
None of given (right Answer)
Which of the following function will be used to register even handler with events generators (button)?
addAction()
AddActionListener() (right Answer)
AddKListener()
ActionListener()
WindowsListener interface contains ___________ methods
Four
Six
Seven
Eight (right Answer)
Java defines _____ for the listener interfaces having more than one vent handling methods.
Wrapper Classes
Abstract Classes
Concrete Classes
Adapter Classes (right Answer)
Which of the following statement object is used to execute store procedures?
Statement
PreparedStatment
CallableStatement (right Answer)
None of the above given
Which of the following object is passed as an argument to paintComponent() method?
Image object
Jpanel object (right Answer)
JFrame onject
Graphic object
previous() is a method of __________ object.
Statement
ResultSet
ResultSetMetaData
Connection
Which of the following problem occurs with lower priority threads?
Race condition
Starvation (right Answer)
Average waiting time
Process death
Servlets are used to
Create graphics
Provide dynamic web contents which extend web servers (right Answer)
Develop applets
Create GUI
Which of the following is NOT a part of HTTP request?
Request method
URI
Status code (right Answer)
Header fields
Which of the following object is used for sharing resources among different servlets of same application?
ServletConfig
ServletRequest
ServletResponse
ServletContext (right Answer)
Which of the following method needs to ovveride while handling threads in java?
init()
start()
run()(right Answer)
runnable()
Which of the following method is called only once during life cycle of Servlet
Service()
Init()(right Answer)
Destroy()
Start()
Which of the following method needs to override while handling threads in java?
Select correct option:
init()right Answer)
start()
run()
runnable()
isReadOnly() is a method of _________ object.
ResultSet
ResultSetMetaData
DataBaseMetaData
Connection
Which of the following syntax is used to get DataBaseMetaData object?
DataBaseMetaData md = rs.getMetaData();
// where rs is ResultSet object (right Answer)
DataBaseMetaData md = st.getMetaData();
// where st is Statement object
DataBaseMetaData md = con.getMetaData();
// where con is Connection object
DataBaseMetaData md = rsmd.getMetaData();
// where rsmd is ResultSetMetaData object
Interface of HttpServletResponse extends class ServletResponse
False
True (right Answer)
Which of the following method is used to determine whether a database is read only or not?
isReadonly()
isReadOnly()
isreadonly()
IsReadOnly()
Servlet mapping is defined in ________
servlet
web.xml (right Answer)
html
JSP
Which of the following is NOT a web technoloy of Java?
Servlet
JSP
ASP
JSF (right Answer)
Which of the following is NOT true about HTTP?
HTTP is a stateless protocol
HTTP is a request response communication model
HTTP maintains user session between successive requests. (right Answer)
HTTP has no built-in state management between successive requests.
getrequest() method gets information from a client and postrequest() method posts data to a client.
True (right Answer)
False
getAttribute(String) extracts----------- stored value from a session object
Subsequently
None of these
Previously (right Answer)
Currently
getParameters() method returns an array of strings containing the values for a specified servlet parameter.
True
False (right Answer)
To destroy the session in Servlet we use?
session.destroy()
session.invalidate()
session.end()(right Answer)
session.Kill()
From the following which session tracking technique is used when new session is started?
Cookies
URL Rewriting
Both Cookies and URL Rewriting (right Answer)
None of these
HttpSession stores session information in
File system of client
File system of server
A cookie (right Answer)
A session object
HttpServletResponse object is created when web server executes the servlet. This object is passes to the servlet service method which passes it to doGet () or doPost().
True (right Answer)
False
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