Deck 3: Servlets and Session Tracking

Question 1

Sessions is a part of the SessionTracking and it is for maintaining the client state at server side.

Answer 1

True

Question 2

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

Answer 2

The destroy() method is called only once at the end of the life cycle of a filter

Question 3

Web server is used for loading the init() method of servlet.

Answer 3

True

Question 4

Servlets handle multiple simultaneous requests by using threads.

Question 5

Which method is used to send the same request and response objects to another servlet in RequestDispacher ?

A)forward()
B)sendRedirect()
C)Both A & B
D)None of the above

Question 6

The sendRedirect() method of HttpServletResponse interface can be used to redirect response to another resource, it may be servlet, jsp or html file

Question 7

Which packages represent interfaces and classes for servlet API?

A)javax.servlet
B)javax.servlet.http
C)Both A & B
D)None of the above

Question 8

Which class can handle any type of request so that it is protocol-independent?

A)GenericServlet
B)HttpServle
C)Both A & B
D)None of the above

Question 9

Which HTTP Request method is non-idempotent?

A)GET
B)POST
C)Both A & B
D)None of the above

Question 10

Which object is created by the web container at time of deploying the project?

A)ServletConfig
B)ServletContext
C)Both A & B
D)None of the above

Question 11

What is the lifecycle of a servlet?

A)Servlet class is loaded
B)Servlet instance is created
C)init,Service,destroy method is invoked
D)All mentioned above

Question 12

Which method in session tracking is used in a bit of information that is sent by a web server to a browser and which can later be read back from that browser?

A)HttpSession
B)URL rewriting
C)Cookies
D)Hidden form fields

Question 13

How many techniques are used in Session Tracking?

A)4
B)3
C)2
D)5

Question 14

In HTTP Request method Get request is secured because data is exposed in URL bar

Question 15

In the following statements identify the disadvantages of CGI?

A)If number of clients increases, it takes more time for sending response
B)For each request, it starts a process and Web server is limited to start processes
C)It uses platform dependent language e.g. C, C++, perl
D)All mentioned above

Question 16

Servlet technology is used to create web application

Question 17

Which method is used to specify before any lines that uses the PintWriter?

A)setPageType()
B)setContextType()
C)setContentType()
D)setResponseType()

Question 18

What are functions of Servlet container?

A)Lifecycle management
B)Communication Support
C)Multithreading Support
D)All of the above

Question 19

Which object of HttpSession can be used to view and manipulate information about a session?

A)session identifier
B)creation time
C)last accessed time
D)All mentioned above

Question 20

Which methods are used to bind the objects on HttpSession instance and get the objects?

A)setAttribute
B)getAttribute
C)Both A & B
D)None of the above

Question 21

Which method take a string not a URL?

A)sendRedirect
B)forward
C)Both
D)None

Question 22

Which of the following are interface?
1) ServletContext
2) Servlet
3) GenericServlet
4) HttpServlet

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

Question 23

The life cycle of a servlet is managed by

A)servlet context
B)servlet container
C)the supporting protocol (such as http or https)
D)All of the above

Question 24

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)