McqMate
Chapters
| 1. |
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 |
| Answer» D. java.util.datetime | |
| 2. |
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 |
| Answer» D. better performance | |
| 3. |
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 |
| Answer» C. prevents sql injection | |
| 4. |
Which one of the following contains date information? |
| A. | java.sql.timestamp |
| B. | java.sql.time |
| C. | java.io.time |
| D. | java.io.timestamp |
| Answer» A. java.sql.timestamp | |
| 5. |
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 |
| Answer» C. does not commit transweraction automatically after each query | |
| 6. |
Which of the following is used to call stored procedure? |
| A. | statement |
| B. | preparedstatement |
| C. | callablestatment |
| D. | calledstatement |
| Answer» C. callablestatment | |
| 7. |
Which of the following is method of JDBC batch process? |
| A. | setbatch() |
| B. | deletebatch() |
| C. | removebatch() |
| D. | addbatch() |
| Answer» D. addbatch() | |
| 8. |
Which of the following is used to rollback a JDBC trAnsweraction? |
| A. | rollback() |
| B. | rollforward() |
| C. | deletetransweraction() |
| D. | removetransweraction() |
| Answer» A. rollback() | |
| 9. |
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 |
| Answer» A. jdbc-odbc bridge driver | |
| 10. |
How many JDBC product components does the Java software provides? |
| A. | 3 |
| B. | 2 |
| C. | 4 |
| D. | 5 |
| Answer» A. 3 | |
| 11. |
How many types of JDBC drivers are available? |
| A. | 3 |
| B. | 4 |
| C. | 2 |
| D. | 5 |
| Answer» B. 4 | |
| 12. |
Which result set generally does not show changes to the underlying database
|
| A. | type_forward_only |
| B. | type_scroll_insensitive |
| C. | type_scroll_sensitive |
| D. | all mentioned above |
| Answer» B. type_scroll_insensitive | |
| 13. |
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 |
| Answer» A. prepare statement | |
| 14. |
What is used to execute parameterized query? |
| A. | statement interface |
| B. | preparedstatement interface |
| C. | resultset interface |
| D. | none of the above |
| Answer» B. preparedstatement interface | |
| 15. |
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 |
| Answer» D. all mentioned above | |
| 16. |
JDBC stands for? |
| A. | java database connectivity |
| B. | java database concept |
| C. | java database communications |
| D. | none of the above |
| Answer» A. java database connectivity | |
| 17. |
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 |
| Answer» D. transweraction_repeatable_read | |
| 18. |
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 |
| Answer» D. interim statement | |
| 19. |
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() |
| Answer» C. both a and b | |
| 20. |
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 |
| Answer» D. type 4 drivers can not be used with netscape | |
| 21. |
Which driver is efficient and always preferable for using JDBC applications? |
| A. | type – 4 |
| B. | type – 1 |
| C. | type – 3 |
| D. | type – 2 |
| Answer» A. type – 4 | |
| 22. |
JDBC facilitates to store the java objects by using which of the methods of
|
| A. | 1, 2 |
| B. | 1,2,3 |
| C. | 1,3 |
| D. | 2,3 |
| Answer» B. 1,2,3 | |
| 23. |
The JDBC-ODBC bridge is |
| A. | three tiered |
| B. | multithreaded |
| C. | best for any platform |
| D. | all of the above |
| Answer» B. multithreaded | |
| 24. |
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 |
| Answer» A. byte | |
| 25. |
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 |
| Answer» B. java)util.date | |
| 26. |
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 |
| Answer» D. jdbc 3.0 | |
| 27. |
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 |
| Answer» C. databasemetadata)getmaxconnections | |
| 28. |
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 |
| Answer» C. when the jdbc database url passed is not constructed properly | |
| 29. |
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 |
| Answer» A. type-4 driver | |
| 30. |
How many trAnsweraction isolation levels are defined in javA)sql.Connection interface? |
| A. | 4 |
| B. | 3 |
| C. | 5 |
| D. | 2 |
| Answer» C. 5 | |
| 31. |
Which method is used to perform DML statements in JDBC? |
| A. | execute() |
| B. | executequery() |
| C. | executeupdate() |
| D. | executeresult() |
| Answer» C. executeupdate() | |
| 32. |
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) |
| Answer» A. at client side, a separate driver is needed for each database. | |
| 33. |
TCP,FTP,Telnet,SMTP are example of? |
| A. | socket |
| B. | ip address |
| C. | protocol |
| D. | mac address |
| Answer» C. protocol | |
| 34. |
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 |
| Answer» A. public string gethostname() | |
| 35. |
Show some networking terminology given below? |
| A. | all |
| B. | ip address |
| C. | protocol |
| D. | mac address |
| Answer» A. all | |
| 36. |
Which classes are used for connection less socket programming? |
| A. | datagram socket |
| B. | datagram packet |
| C. | both a and b |
| D. | none |
| Answer» C. both a and b | |
| 37. |
how many ports TCP/IP are reserved for specific protocol? |
| A. | 10 |
| B. | 1024 |
| C. | 2048 |
| D. | 512 |
| Answer» B. 1024 | |
| 38. |
how many bits are in a single IP address? |
| A. | 8 |
| B. | 16 |
| C. | 32 |
| D. | 64 |
| Answer» C. 32 | |
| 39. |
Which of these class is used to encapsulate IP address and DNS? |
| A. | datagram packet |
| B. | url |
| C. | inetaddress |
| D. | contenthandler |
| Answer» C. inetaddress | |
| 40. |
Which of these is return type of getAddress method of DatagramPacket class? |
| A. | findaddress() |
| B. | getaddress() |
| C. | address() |
| D. | whois() |
| Answer» B. getaddress() | |
| 41. |
Which of these method of DatagramPacket is used to find port number? |
| A. | port() |
| B. | getport() |
| C. | findport() |
| D. | receivedport() |
| Answer» A. port() | |
| 42. |
Which of these class is necessary to implement datagrams? |
| A. | datagrampacket |
| B. | datagramsocket |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» C. all of the mentioned | |
| 43. |
Which of these method of DatagramPacket is used to find the port number? |
| A. | port() |
| B. | getport() |
| C. | findport() |
| D. | recieveport() |
| Answer» A. port() | |
| 44. |
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() |
| Answer» A. getdata() | |
| 45. |
Which of these method of DatagramPacket is used to find the length of byte array? |
| A. | getnumber() |
| B. | length() |
| C. | length() |
| D. | getlength() |
| Answer» D. getlength() | |
| 46. |
Which of these method is used to start a server thread? |
| A. | run() |
| B. | start() |
| C. | runthread() |
| D. | startthread() |
| Answer» A. run() | |
| 47. |
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» C. handleget() | |
| 48. |
Which of these methods of httpd class is used to read data from the stream? |
| A. | getdta() |
| B. | getresponse() |
| C. | getstream() |
| D. | getrawrequest() |
| Answer» D. getrawrequest() | |
| 49. |
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() |
| Answer» B. logentry() | |
| 50. |
Which of these method is used to find a URL from the cache of httpd? |
| A. | findfromcache() |
| B. | findfromcache() |
| C. | servefromcache() |
| D. | getfromcache() |
| Answer» C. servefromcache() | |
| 51. |
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 |
| Answer» D. hits.to.cache | |
| 52. |
Which of these method of httpd class is used to write UrlCacheEntry object into local disk? |
| A. | writediskcache() |
| B. | writetodisk() |
| C. | writecache() |
| D. | writediskentry() |
| Answer» A. writediskcache() | |
| 53. |
Which of these is an instance variable of class httpd? |
| A. | port |
| B. | cache |
| C. | log |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 54. |
Which of these is an instance variable of httpd that is a Hashtable? |
| A. | port |
| B. | cache |
| C. | log |
| D. | stopflag |
| Answer» C. log | |
| 55. |
Which of these exception is thrown by URL class’s constructors? |
| A. | urlnotfound |
| B. | urlsourcenotfound |
| C. | malformedurlexception |
| D. | urlnotfoundexception |
| Answer» C. malformedurlexception | |
| 56. |
Which of these methods is used to know host of an URL? |
| A. | host() |
| B. | gethost() |
| C. | gethost() |
| D. | gethost() |
| Answer» B. gethost() | |
| 57. |
Which of these methods is used to know the full URL of an URL object? |
| A. | fullhost() |
| B. | gethost() |
| C. | externalform() |
| D. | toexternalform() |
| Answer» D. toexternalform() | |
| 58. |
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 |
| Answer» D. all of the mentioned | |
| 59. |
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 |
| Answer» D. all mentioned above | |
| 60. |
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 |
| Answer» D. all mentioned above | |
| 61. |
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 |
| Answer» C. both a & b | |
| 62. |
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 |
| Answer» C. standalone servletengine | |
| 63. |
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 |
| Answer» B. httpservlets | |
| 64. |
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 |
| Answer» B. non-persistent cookie | |
| 65. |
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 |
| Answer» D. both b & c | |
| 66. |
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 |
| Answer» A. servlet | |
| 67. |
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 |
| Answer» B. scriptlet tag | |
| 68. |
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 |
| Answer» A. jsp:include | |
| 69. |
In JSP how many ways are there to perform exception handling? |
| A. | 3 |
| B. | 2 |
| C. | 4 |
| D. | 5 |
| Answer» B. 2 | |
| 70. |
In JSP page directive which attribute defines theMIME(Multipurpose Internet Mail Extension) type of the HTTP response? |
| A. | import |
| B. | content type |
| C. | extends |
| D. | info |
| Answer» B. content type | |
| 71. |
A JSP page consists of which tags? |
| A. | html tags |
| B. | jsp tags |
| C. | both a & b |
| D. | none of the above |
| Answer» C. both a & b | |
| 72. |
What alternatives exist to embedding Java code directly within the HTML markup of your JSP page? |
| A. | moving the code into your session manager. |
| B. | moving the code into scriptlets. |
| C. | moving the code into javabeans and servlets. |
| D. | moving the code into a transaction manager. |
| Answer» C. moving the code into javabeans and servlets. | |
| 73. |
What type of scriptlet code is better-suited to being factored forward into a servlet? |
| A. | code that deals with logic that is common across requests. |
| B. | code that deals with logic that is vendor specific) |
| C. | code that deals with logic that relates to database access. |
| D. | code that deals with logic that relates to client scope. |
| Answer» A. code that deals with logic that is common across requests. | |
| 74. |
URL encoding is the method of replacing all the spaces and other extra characters into their corresponding _______ Characters? |
| A. | hex |
| B. | binary |
| C. | octal |
| D. | decimal |
| Answer» A. hex | |
| 75. |
Which of the scripting of JSP not putting content into service method of the converted servlet? |
| A. | declarations |
| B. | scriptlets |
| C. | expressions |
| D. | none of the above |
| Answer» A. declarations | |
| 76. |
What requires less resources? |
| A. | thread |
| B. | process |
| C. | thread and process |
| D. | neither thread nor process |
| Answer» A. thread | |
| 77. |
What does not prevent JVM from terminating? |
| A. | process |
| B. | daemon thread |
| C. | user thread |
| D. | jvm thread |
| Answer» B. daemon thread | |
| 78. |
What decides thread priority? |
| A. | process |
| B. | process scheduler |
| C. | thread |
| D. | thread scheduler |
| Answer» D. thread scheduler | |
| 79. |
What should not be done to avoid deadlock? |
| A. | avoid using multiple threads |
| B. | avoid hold several locks at once |
| C. | execute foreign code while holding a lock |
| D. | use interruptible locks |
| Answer» C. execute foreign code while holding a lock | |
| 80. |
What is true about threading? |
| A. | run() method calls start() method and runs the code |
| B. | run() method creates new thread |
| C. | run() method can be called directly without start() method being called |
| D. | start() method creates new thread and calls code written in run() method |
| Answer» D. start() method creates new thread and calls code written in run() method | |
| 81. |
Which of the following is a correct constructor for thread? |
| A. | thread(runnable a, string str) |
| B. | thread(int priority) |
| C. | thread(runnable a, int priority) |
| D. | thread(runnable a, threadgroup t) |
| Answer» A. thread(runnable a, string str) | |
| 82. |
Which of the following will ensure the thread will be in running state? |
| A. | yield() |
| B. | notify() |
| C. | wait() |
| D. | thread.killthread() |
| Answer» C. wait() | |
| 83. |
Which of these are types of multitasking? |
| A. | process based |
| B. | thread based |
| C. | process and thread based |
| D. | none of the mentioned |
| Answer» C. process and thread based | |
| 84. |
What will happen if two thread of the same priority are called to be processed simultaneously? |
| A. | anyone will be executed first lexographically |
| B. | both of them will be executed simultaneously |
| C. | none of them will be executed |
| D. | it is dependent on the operating system |
| Answer» D. it is dependent on the operating system | |
| 85. |
In a RMI Client Program, what are the exceptions which might have to handled? |
| A. | remoteexception |
| B. | notboundexception |
| C. | malformedurlexception |
| D. | all mentioned above |
| Answer» D. all mentioned above | |
| 86. |
Which is a one-way communication only between the client and the server and it
|
| A. | tcp/ip |
| B. | udp |
| C. | both a & b |
| D. | none of the above |
| Answer» B. udp | |
| 87. |
An RMI Server is responsible for, |
| A. | creating an instance of the remote object |
| B. | exporting the remote object |
| C. | binding the instance of the remote object to the rmi registry |
| D. | all mentioned above |
| Answer» D. all mentioned above | |
| 88. |
In RMI Distributed object applications need to do? |
| A. | locate remote objects |
| B. | communicate with remote objects |
| C. | load class definitions for objects that are passed around |
| D. | all mentioned above |
| Answer» D. all mentioned above | |
| 89. |
In RMI applications which program obtains a remote reference to one or more remote objects on a server and then invokes methods on them? |
| A. | server |
| B. | client |
| C. | both a & b |
| D. | none of the above |
| Answer» B. client | |
| 90. |
Which package is used for Remote Method Invocation (RMI)? |
| A. | java.lang.rmi |
| B. | java.lang.reflect |
| C. | java.applet |
| D. | java.rmi |
| Answer» D. java.rmi | |
| 91. |
Java supports RMI, RMI Stands for? |
| A. | random method invocation |
| B. | remote memory interface |
| C. | remote method invocation |
| D. | random method invocation |
| Answer» C. remote method invocation | |
| 92. |
Which is built on the top of socket programming? |
| A. | ejb |
| B. | rmi |
| C. | both a & b |
| D. | none of the above |
| Answer» B. rmi | |
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