Quiznetik

Advanced JAVA | Set 2

1. Attribute used to handle web flow requests.

A. servlet-mapping

B. servlet-attr

C. servlet-flow

D. servlet-requests

Correct : A. servlet-mapping

2. To resolve Facelets views we configure:

A. ViewFacelets

B. ViewResolver

C. View-resolver

D. View_Resolver

Correct : B. ViewResolver

3. File extension of a view state’s name which is by default loaded by facelet page.

A. .xml

B. .hbm.xml

C. .xhtml

D. none of the mentioned

Correct : C. .xhtml

4. Navigation in traditional JSF applications is handled by:

A. linking directly linking to a resource

B. commandLink

C. invoking an action

D. all of the mentioned

Correct : D. all of the mentioned

5. For cross field validation or some sort of barrier to ensure state before you start a flow, we use.

A. FacesContext

B. FaceletContext

C. FacesResolver

D. All of the mentioned

Correct : A. FacesContext

6. Component which additionally provides a pop-up date picker control for its enclosed input field.

A. clientDateValidator

B. clientValidator

C. dateValidator

D. validator

Correct : A. clientDateValidator

7. Component which encloses command button.

A. validateAll

B. validateAllClick

C. validateAllInClick

D. validateAllOnClick

Correct : C. validateAllInClick

8. Which of the following is not a core interface of Hibernate?

A. Configuration

B. Criteria

C. SessionManagement

D. Session

Correct : C. SessionManagement

9. Which of the following is not a core component of Hibernate?

A. JDBC

B. SessionFactory

C. Session

D. Configuration

Correct : A. JDBC

10. Is Session a thread-safe object?

A. True

B. False

C. none

D. all

Correct : B. False

11. SessionFactory is a thread-safe object.

A. True

B. False

C. none

D. all

Correct : A. True

12. Which of the following methods returns proxy object?

A. loadDatabase()

B. getDatabase()

C. load()

D. get()

Correct : C. load()

13. Which of the following methods hits database always?

A. load()

B. loadDatabase()

C. getDatabase()

D. get()

Correct : D. get()

14. Which of the following method is used inside session only?

A. merge()

B. update()

C. end()

D. kill()

Correct : B. update()

15. The SessionFactory is heavyweight object.

A. False

B. True

C. none

D. all

Correct : B. True

16. Which of the following is not a state of object in Hibernate?

A. Attached()

B. Detached()

C. Persistent()

D. Transient()

Correct : A. Attached()

17. Which of the following is true about HQL?

A. HQL takes java objects in the same way as SQL takes tables.

B. HQL is a Object Oriented Query language

C. HQL is database independent.

D. All of the above.

Correct : D. All of the above.

18. Which of the following is not an inheritance mapping strategies?

A. Table per hierarchy

B. Table per concrete class

C. Table per subclass

D. Table per class

Correct : D. Table per class

19. Which of the following is not an advantage of using Hibernate Query Language?

A. Database independent

B. Easy to write query

C. No need to learn SQL

D. Difficult to implement

Correct : D. Difficult to implement

20. In which file database table configuration is stored?

A. .dbm

B. .hbm

C. .ora

D. .sql

Correct : B. .hbm

21. Which of the following is not an advantage of Hibernate Criteria API?

A. Allows to use aggregate functions

B. Cannot order the result set

C. Allows to fetch only selected columns of result

D. Can add conditions while fetching results

Correct : B. Cannot order the result set

22. What is the basic concept of Spring?

A. Factory pattern

B. Singleton pattern

C. Dependency injection or Inversion of control

D. Abstract factory pattern

Correct : C. Dependency injection or Inversion of control

23. Which spring module provides the capability of DI or IOC?

A. Spring web

B. Core container

C. AOP

D. Data access

Correct : B. Core container

24. What are beans in the concept of Spring or what are spring beans?

A. Controller classes

B. Service classes

C. Repository

D. Any class that is managed by the container.

Correct : D. Any class that is managed by the container.

25. How does spring achieve DI or IOC?

A. Service locator pattern

B. Factory pattern

C. Abstract factory pattern

D. Singleton pattern

Correct : A. Service locator pattern

26. Which interface in spring is responsible for Instantiating and managing the so called Spring beans?

A. Bean Factory

B. ApplicationContext

C. BeanDefenition

D. BeanDefenition

Correct : B. ApplicationContext

27. Beans can be created by which of the following properties?

A. Scope

B. Property

C. Class

D. It’s own constructor

Correct : D. It’s own constructor

28. Which attribute is used to specify class name of the bean?

A. name

B. id

C. class

D. constructor-args

Correct : C. class

29. Which of the following method can be used to used to instantiate a method?

A. static factory method

B. default-init method

C. destroy method

D. lazy-init method

Correct : A. static factory method

30. Which attribute is used to specify static factory-method?

A. factory-method

B. default-init method

C. destroy method

D. lazy-init method

Correct : A. factory-method

31. Purpose of Static Factory Method?

A. Static method to create an object

B. Initialize bean

C. All of the mentioned

D. None of the mentioned

Correct : A. Static method to create an object

32. Which of the following contains both date and time?

A. java.io.date

B. java.sql.date

C. java.util.date

D. java.util.datetime

Correct : D. java.util.datetime

33. Which of the following is advantage of using JDBC connection pool?

A. slow performance

B. using more memory

C. using less memory

D. better performance

Correct : D. better performance

34. Which of the following is advantage of using PreparedStatement in Java?

A. slow performance

B. encourages sql injection

C. prevents sql injection

D. more memory usage

Correct : C. prevents sql injection

35. Which one of the following contains date information?

A. java.sql.timestamp

B. java.sql.time

C. java.io.time

D. java.io.timestamp

Correct : A. java.sql.timestamp

36. What does setAutoCommit(false) do?

A. commits transweraction after each query

B. explicitly commits transweraction

C. does not commit transweraction automatically after each query

D. never commits transweraction

Correct : C. does not commit transweraction automatically after each query

37. Which of the following is used to call stored procedure?

A. statement

B. preparedstatement

C. callablestatment

D. calledstatement

Correct : C. callablestatment

38. Which of the following is method of JDBC batch process?

A. setbatch()

B. deletebatch()

C. removebatch()

D. addbatch()

Correct : D. addbatch()

39. Which of the following is used to rollback a JDBC trAnsweraction?

A. rollback()

B. rollforward()

C. deletetransweraction()

D. removetransweraction()

Correct : A. rollback()

40. Which driver uses ODBC driver to connect to the database?

A. jdbc-odbc bridge driver

B. native - api driver

C. network protocol driver

D. thin driver

Correct : A. jdbc-odbc bridge driver

41. How many JDBC product components does the Java software provides?

A. 3

B. 2

C. 4

D. 5

Correct : A. 3

42. How many types of JDBC drivers are available?

A. 3

B. 4

C. 2

D. 5

Correct : B. 4

43. Which result set generally does not show changes to the underlying database that are made while it is open. The membership, order, and column values of rows are typically fixed when the result set is created?

A. type_forward_only

B. type_scroll_insensitive

C. type_scroll_sensitive

D. all mentioned above

Correct : B. type_scroll_insensitive

44. Which method is used for an SQL statement that is executed frequently?

A. prepare statement

B. prepare call

C. create statement

D. none of the above

Correct : A. prepare statement

45. What is used to execute parameterized query?

A. statement interface

B. preparedstatement interface

C. resultset interface

D. none of the above

Correct : B. preparedstatement interface

46. Which JDBC product components does the Java software provide?

A. the jdbc driver manager

B. the jdbc driver test suite

C. the jdbc-odbc bridge

D. all mentioned above

Correct : D. all mentioned above

47. JDBC stands for?

A. java database connectivity

B. java database concept

C. java database communications

D. none of the above

Correct : A. java database connectivity

48. Which of the following allows non repeatable read in JDBC Connection?

A. transweraction_read_uncommitted

B. transweraction_read_committed

C. transweraction_serializable

D. transweraction_repeatable_read

Correct : D. transweraction_repeatable_read

49. Which of the following statements is false as far as different type of statements is concern in JDBC?

A. regular statement

B. prepared statement

C. callable statement

D. interim statement

Correct : D. interim statement

50. Which of the following methods are needed for loading a database driver in JDBC?

A. registerdriver() method

B. class.forname()

C. both a and b

D. getconnection()

Correct : C. both a and b

51. Which of the following is false as far as type 4 driver is concern?

A. type 4 driver is “native protocol, pure java” driver

B. type 4 drivers are 100% java compatible

C. type 4 drivers uses socket class to connect to the database

D. type 4 drivers can not be used with netscape

Correct : D. type 4 drivers can not be used with netscape

52. Which driver is efficient and always preferable for using JDBC applications?

A. type – 4

B. type – 1

C. type – 3

D. type – 2

Correct : A. type – 4

53. JDBC facilitates to store the java objects by using which of the methods of PreparedStatement setObject () 2. setBlob() 3. setClob()

A. 1, 2

B. 1,2,3

C. 1,3

D. 2,3

Correct : B. 1,2,3

54. The JDBC-ODBC bridge is

A. three tiered

B. multithreaded

C. best for any platform

D. all of the above

Correct : B. multithreaded

55. All raw data types (including binary documents or images) should be read and uploaded to the database as an array of

A. byte

B. int

C. boolean

D. char

Correct : A. byte

56. The class javA)sql.Timestamp has its super class as

A. java)sql.time

B. java)util.date

C. java)util.time

D. none of the above

Correct : B. java)util.date

57. BLOB, CLOB, ARRAY and REF type columns can be updated in

A. jdbc 1.0

B. jdbc 4.0

C. jdbc 2.0

D. jdbc 3.0

Correct : D. jdbc 3.0

58. Which of the following methods finds the maximum number of connections that a specific driver can obtain?

A. database.getmaxconnections

B. connection.getmaxconnections

C. databasemetadata)getmaxconnections

D. resultsetmetadata)getmaxconnections

Correct : C. databasemetadata)getmaxconnections

59. When the message “No Suitable Driver” occurs?

A. when the driver is not registered by class.forname() method

B. when the user name, password and the database does not match

C. when the jdbc database url passed is not constructed properly

D. when the type 4 driver is used

Correct : C. when the jdbc database url passed is not constructed properly

60. Which driver is called as thin-driver in JDBC?

A. type-4 driver

B. type-1 driver

C. type-3 driver

D. type-2 driver

Correct : A. type-4 driver

61. How many trAnsweraction isolation levels are defined in javA)sql.Connection interface?

A. 4

B. 3

C. 5

D. 2

Correct : C. 5

62. Which method is used to perform DML statements in JDBC?

A. execute()

B. executequery()

C. executeupdate()

D. executeresult()

Correct : C. executeupdate()

63. What is the disadvantage of Type-4 Native-Protocol Driver?

A. at client side, a separate driver is needed for each database.

B. type-4 driver is entirely written in java

C. the driver converts jdbc calls into vendor-specific database protocol

D. it does not support to read mysql data)

Correct : A. at client side, a separate driver is needed for each database.

64. TCP,FTP,Telnet,SMTP are example of?

A. socket

B. ip address

C. protocol

D. mac address

Correct : C. protocol

65. In Inetaddress class which method returns the host name of IP address?

A. public string gethostname()

B. public string gethostaddress()

C. public string inetaddress getlocalhost()

D. none

Correct : A. public string gethostname()

66. Show some networking terminology given below?

A. all

B. ip address

C. protocol

D. mac address

Correct : A. all

67. Which classes are used for connection less socket programming?

A. datagram socket

B. datagram packet

C. both a and b

D. none

Correct : C. both a and b

68. how many ports TCP/IP are reserved for specific protocol?

A. 10

B. 1024

C. 2048

D. 512

Correct : B. 1024

69. how many bits are in a single IP address?

A. 8

B. 16

C. 32

D. 64

Correct : C. 32

70. Which of these class is used to encapsulate IP address and DNS?

A. datagram packet

B. url

C. inetaddress

D. contenthandler

Correct : C. inetaddress

71. Which of these is return type of getAddress method of DatagramPacket class?

A. findaddress()

B. getaddress()

C. address()

D. whois()

Correct : B. getaddress()

72. Which of these method of DatagramPacket is used to find port number?

A. port()

B. getport()

C. findport()

D. receivedport()

Correct : A. port()

73. Which of these class is necessary to implement datagrams?

A. datagrampacket

B. datagramsocket

C. all of the mentioned

D. none of the mentioned

Correct : C. all of the mentioned

74. Which of these method of DatagramPacket is used to find the port number?

A. port()

B. getport()

C. findport()

D. recieveport()

Correct : A. port()

75. Which of these method of DatagramPacket is used to obtain the byte array of data contained in a datagram?

A. getdata()

B. getbytes()

C. getarray()

D. recievebytes()

Correct : A. getdata()

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

A. getnumber()

B. length()

C. length()

D. getlength()

Correct : D. getlength()

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

A. run()

B. start()

C. runthread()

D. startthread()

Correct : A. run()

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

A. handle()

B. handleget()

C. handleget()

D. handleget()

Correct : C. handleget()

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

A. getdta()

B. getresponse()

C. getstream()

D. getrawrequest()

Correct : D. getrawrequest()

80. 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()

Correct : B. logentry()

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

A. findfromcache()

B. findfromcache()

C. servefromcache()

D. getfromcache()

Correct : C. servefromcache()

82. 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

Correct : D. hits.to.cache

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

A. writediskcache()

B. writetodisk()

C. writecache()

D. writediskentry()

Correct : A. writediskcache()

84. Which of these is an instance variable of class httpd?

A. port

B. cache

C. log

D. all of the mentioned

Correct : D. all of the mentioned

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

A. port

B. cache

C. log

D. stopflag

Correct : C. log

86. Which of these exception is thrown by URL class’s constructors?

A. urlnotfound

B. urlsourcenotfound

C. malformedurlexception

D. urlnotfoundexception

Correct : C. malformedurlexception

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

A. host()

B. gethost()

C. gethost()

D. gethost()

Correct : B. gethost()

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

A. fullhost()

B. gethost()

C. externalform()

D. toexternalform()

Correct : D. toexternalform()

89. 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

Correct : D. all of the mentioned

90. 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

Correct : D. all mentioned above

91. 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

Correct : D. all mentioned above

92. 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

Correct : C. both a & b

93. 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

Correct : C. standalone servletengine

94. 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

Correct : B. httpservlets

95. 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

Correct : B. non-persistent cookie

96. 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

Correct : D. both b & c

97. 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

Correct : A. servlet

98. 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

Correct : B. scriptlet tag

99. 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

Correct : A. jsp:include

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

A. 3

B. 2

C. 4

D. 5

Correct : B. 2