Deck 8: Java Web Development: Methods, Variables, and Technologies

Question 1

Which of these method of DatagramPacket is used to find the length of byte array?

A)getnumber()
B)length()
C)length().
D)getlength()

Answer 1

getlength()

Question 2

Which of these method is used to start a server thread?

A)run()
B)start()
C)runthread()
D)startthread()

Answer 2

run()

Question 3

Which of these method is called when http daemon is acting like a normal web server?

A)handle()
B)handleget()
C)handleget().
D)handleget(),

Answer 3

handleget().

Question 4

Which of these methods of httpd class is used to read data from the stream?

A)getdta()
B)getresponse()
C)getstream()
D)getrawrequest()

Question 5

Which of these method of httpd class is used to get report on each hit to HTTP server?

A)log()
B)logentry()
C)loghttpd()
D)logresponse()

Question 6

Which of these method is used to find a URL from the cache of httpd?

A)findfromcache()
B)findfromcache().
C)servefromcache()
D)getfromcache()

Question 7

Which of these variables stores the number of hits that are successfully served out of cache?

A)hits
B)hitstocache
C)hits_to_cache
D)hits.to.cache

Question 8

Which of these method of httpd class is used to write UrlCacheEntry object into local disk?

A)writediskcache()
B)writetodisk()
C)writecache()
D)writediskentry()

Question 9

Which of these is an instance variable of class httpd?

A)port
B)cache
C)log
D)all of the mentioned

Question 10

Which of these is an instance variable of httpd that is a Hashtable?

A)port
B)cache
C)log
D)stopflag

Question 11

Which of these exception is thrown by URL class's constructors?

A)urlnotfound
B)urlsourcenotfound
C)malformedurlexception
D)urlnotfoundexception

Question 12

Which of these methods is used to know host of an URL?

A)host()
B)gethost()
C)gethost().
D)gethost(),

Question 13

Which of these methods is used to know the full URL of an URL object?

A)fullhost()
B)gethost()
C)externalform()
D)toexternalform()

Question 14

Which of these class is used to access actual bits or content information of a URL?

A)url
B)urldecoder
C)urlconnection
D)all of the mentioned

Question 15

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 16

Which of these ways used to communicate from an applet to servlet?

A)rmi communication
B)http communication
C)socket communication
D)all mentioned above

Question 17

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

A)setattribute
B)getattribute
C)both a & b
D)none of the above

Question 18

Which type of ServletEngine is a server that includes built-in support for servlets?

A)add-on servletengine
B)embedded servletengine
C)standalone servletengine
D)none of the above

Question 19

What type of servlets use these methods doGet(), doPost(),doHead, doDelete(), doTrace()?

A)genereic servlets
B)httpservlets
C)all of the above
D)none of the above

Question 20

Which cookie it is valid for single session only and it is removed each time when the user closes the browser?

A)persistent cookie
B)non-persistent cookie
C)all the above
D)none of the above

Question 21

Which action tags are used in JSP for developing web application with Java Bean?

A)jsp:usebean
B)jsp:setproperty
C)jsp:getproperty
D)both b & c

Question 22

Which technology do we mix our business logic with the presentation logic?

A)servlet
B)jsp
C)both a & b
D)none of the above

Question 23

Which tag is used to execute java source code in JSP?

A)declaration tag
B)scriptlet tag
C)expression tag
D)none of the above

Question 24

Which JSP Action tags is used to include the content of another resource,it May be jsp, html or servlet?

A)jsp:include
B)jsp:forward
C)jsp:plugin
D)jsp:papam

Question 25

In JSP how many ways are there to perform exception handling?

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