Deck 2: Servlets and Web Applications

Question 1

When might your program wish to run the garbage collecter?

A) Before it enters a compute-intense section of code
B) Before it enters a memory-intense section of code
C) When it knows there will be some idle time
D) All of above

Answer 1

All of above

Question 2

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

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

Answer 2

setContentType()

Question 3

Servlet mapping defines

A) an association between a URL pattern and a servlet
B) an association between a URL pattern and a request page
C) an association between a URL pattern and a response page
D) All of the above

Answer 3

an association between a URL pattern and a servlet

Question 4

The getSession() method with 'true' as its parameter [ getSession(true)] it will return the appropriate session object when

A) the session is completed
B) the session object is passed to another method
C) the session does not exists
D) the session is existing

Question 5

Dynamic interception of requests and responses to transform the information is done by

A) servlet container
B) servlet config
C) servlet context
D) servlet filter

Question 6

The method forward (request,response) will

A) return back to the same method from where the forward was invoked
B) not return back to the same method from where the forward was invoked and the web pages navigation continues
C) Both A and B are correct
D) None of the above

Question 7

What's the difference between servlets and applets?
1) Servlets executes on Servers, where as Applets executes on Browser
2) Servlets have no GUI, where as an Applet has GUI
3) Servlets creates static web pages, where as Applets creates dynamic web pages
4) Servlets can handle only a single request, where as Applet can handle multiple requests

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

Question 8

Which of the following are the session tracking techniques?

A) URL rewriting, using session object, using response object, using hidden fields
B) URL rewriting, using session object, using cookies, using hidden fields
C) URL rewriting, using servlet object, using response object, using cookies
D) URL rewriting, using request object, using response object, using session object

Question 9

The getSession() method with 'true' as its parameter [ getSession(true) ] it will return the appropriate session object when

A) the session is completed
B) the session object is passed to another method
C) the session does not exists
D) the session is existing

Question 10

RequestDispatcher object is used

A) to include other resources
B) to include an image
C) to include xml object
D) to include e-mailing response

Question 11

The include() method of RequestDispatcher

A) sends a request to another resource like servlet, jsp or html
B) includes resource of file like servlet, jsp or html
C) appends the request and response objects to the current servlet
D) None of the above

Question 12

To get the servlet environment information

A) ServletConfig object is used
B) ServletException object is used
C) ServletContext object is used
D) ServletContainer object is used

Question 13

The values of <servlet-name> and <servlet-class> in web. xml file

A) must be same
B) must not be same
C) may be same
D) None of the above

Question 14

What is the limit of data to be passed from HTML when doGet() method is used?

A) 4K
B) 8K
C) 2K
D) 1K

Question 15

In which advantage of servlet, Servlets are managed by JVM so no need to worry about memory leak, garbage collection etc. ?

A) Better performance
B) Portability
C) Robust
D) Secure

Question 16

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 17

Servlet technology is used to create web application?

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

Question 18

In HTTP Request Which Asks for the loopback of the request message, for testing or troubleshooting?

A) PUT
B) OPTIONS
C) DELETE
D) TRACE

Question 19

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

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

Question 20

In the HTTP Request method which is non-idempotent?

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

Question 21

Give the examples of Application Server from the following?

A) Apache
B) JBoss
C) Weblogic
D) Both B & C

Question 22

Abbreviate the term MIME?

A) Multilevel internet Mail Extension
B) Multipurpose internet Mail Extension
C) Multiuse information Mail Extension
D) None of the above

Question 23

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 24

The web container maintains the life cycle of a servlet instance,give 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 25

What are the contents of web module?

A) JSP files
B) Java classes
C) Gif and Html files and
D) Web component deployment descriptors