MCQOPTIONS
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MCQOPTIONS
This section includes 765 Mcqs, each offering curated multiple-choice questions to sharpen your Placement Tests knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Which is irrecoverable? |
| A. | Error |
| B. | Checked Exception |
| C. | Unchecked Exception |
| D. | Both B & C |
| Answer» B. Checked Exception | |
| 102. |
The ACID properties does not describes the transaction management well. |
| A. | True |
| B. | False |
| Answer» C. | |
| 103. |
Mutual exclusive and inter-thread communication are which type of Synchorization? |
| A. | Thread Synchronization |
| B. | Process Synchronization |
| C. | Object Synchronization |
| D. | None of the above |
| Answer» B. Process Synchronization | |
| 104. |
Java application uses an output stream to read data from a source, it may be a file, an array, peripheral device or socket. |
| A. | True |
| B. | False |
| Answer» C. | |
| 105. |
RMI and EJB, provides services to access an object running in another JVM (known as remote object). |
| A. | True |
| B. | False |
| Answer» B. False | |
| 106. |
JDBC RowSet is the wrapper of ResultSet,It holds tabular data like ResultSet but it is easy and flexible to use. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 107. |
Which method is used to establish the connection with the specified url in a Driver Manager class? |
| A. | public static void registerDriver(Driver driver) |
| B. | public static void deregisterDriver(Driver driver) |
| C. | public static Connection getConnection(String url) |
| D. | public static Connection getConnection(String url,String userName,String password) |
| Answer» D. public static Connection getConnection(String url,String userName,String password) | |
| 108. |
Which two interfaces does the javax.servlet.jsp package have? |
| A. | JspPage |
| B. | HttpJspPage |
| C. | JspWriter |
| D. | PageContext |
| E. | Both A & B |
| Answer» F. | |
| 109. |
Which Indicates a result set that cannot be updated programmatically in concurrency? |
| A. | CONCUR_UPDATABLE |
| B. | CONCUR_READ_ONLY |
| C. | All of the above |
| D. | None of the above |
| Answer» C. All of the above | |
| 110. |
Which driver Network connection is indirect that a JDBC client makes to a middleware process that acts as a bridge to the DBMS server? |
| A. | JDBC-Net |
| B. | JDBC-ODBC bridge |
| C. | Native API as basis |
| D. | Native protocol as basis |
| Answer» B. JDBC-ODBC bridge | |
| 111. |
In JSP Action tags which tags are used for bean development? |
| A. | jsp:useBean |
| B. | jsp:setPoperty |
| C. | jsp:getProperty |
| D. | All mentioned above |
| Answer» E. | |
| 112. |
By overriding the toString() method of the Object class, we can return values of the object, so we don't need to write much code. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 113. |
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» C. All of the above | |
| 114. |
Which defines a method called nextElement that is used to get the next element in a data structure that contains multiple elements? |
| A. | Bitset |
| B. | Vector |
| C. | Stack |
| D. | Enumeration |
| Answer» E. | |
| 115. |
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» D. None of the above | |
| 116. |
What invokes immediately after the start() method and also any time the applet needs to repaint itself in the browser? |
| A. | stop() |
| B. | init() |
| C. | paint() |
| D. | destroy() |
| Answer» D. destroy() | |
| 117. |
Which component does the Entity bean represents the persistent data stored in the database? |
| A. | Server-side component |
| B. | Client-side component |
| C. | server and client side component |
| D. | None of the above |
| Answer» B. Client-side component | |
| 118. |
Which method in naming class specifies a name to the remote object? |
| A. | bind(string name) |
| B. | rebind(string name) |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. rebind(string name) | |
| 119. |
Applets cannot make network connection exception to the server host from which it originated. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 120. |
Sessions is a part of the SessionTracking and it is for maintaining the client state at server |
| A. | True |
| B. | False |
| Answer» B. False | |
| 121. |
What are the main subclasses of the Exception class? |
| A. | IOException class |
| B. | RuntimeException Class |
| C. | ClassCastException |
| D. | Both A & B |
| Answer» E. | |
| 122. |
Which configuration files are used in Struts? |
| A. | ApplcationResources.properties |
| B. | struts-config.xml |
| C. | All the above |
| D. | None of the above |
| Answer» D. None of the above | |
| 123. |
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» C. All the above | |
| 124. |
Which is the correct order of lifecycle in an applet? |
| A. | Applet is started,initialized,painted,destroyed,stopped |
| B. | Applet is painted,started,stopped,initilaized,destroyed |
| C. | Applet is initialized,started,painted,stopped,destroyed |
| D. | None of the above |
| Answer» D. None of the above | |
| 125. |
A bean encapsulates many objects into one object, so we can access this object from multiple places. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 126. |
Can we start a thread twice? |
| A. | Yes |
| B. | No |
| Answer» C. | |
| 127. |
Which class has traditionally been the backbone of the JDBC architecture? |
| A. | the JDBC driver manager |
| B. | the JDBC driver test suite |
| C. | the JDBC-ODBC bridge |
| D. | All mentioned above |
| Answer» B. the JDBC driver test suite | |
| 128. |
Which constructor of DatagramSocket class is used to creates a datagram socket and binds it with the given Port Number? |
| A. | DatagramSocket(int port) |
| B. | DatagramSocket(int port, InetAddress address) |
| C. | DatagramSocket() |
| D. | None of the above |
| Answer» C. DatagramSocket() | |
| 129. |
Who is also called father of Java Programming Language? |
| A. | James Gosling |
| B. | Ken Thompson |
| C. | Dennis Richie |
| D. | None of the above |
| Answer» B. Ken Thompson | |
| 130. |
Which string function returns the number of characters in a string? |
| A. | length() |
| B. | replace() |
| C. | charAt() |
| D. | equalIgnoreCase() |
| Answer» B. replace() | |
| 131. |
Which default exception handler that performs the following tasks: 1: Prints out exception description. 2: Prints the stack trace (Hierarchy of methods where the exception occurred). 3: Causes the program to terminate. |
| A. | JVM |
| B. | JDK |
| C. | JRE |
| D. | None of the above |
| Answer» B. JDK | |
| 132. |
What package is a part of the wrapper class which is imported by default into all Java programs? |
| A. | java.lang |
| B. | java.awt |
| C. | java.io |
| D. | java.util |
| Answer» B. java.awt | |
| 133. |
What is the disadvantage of Garbage Collection? |
| A. | It makes java memory efficient because garbage collector removes the unreferenced objects from heap memory |
| B. | It is automatically done by the garbage collector so we don't need to make extra efforts |
| C. | None of the above |
| D. | Both A & B |
| Answer» D. Both A & B | |
| 134. |
The ActionListener interface is not used for handling action events. |
| A. | True |
| B. | False |
| Answer» C. | |
| 135. |
Which methods are commonly used in ServerSocket class? |
| A. | public OutputStream getOutputStream() |
| B. | public Socket accept() |
| C. | public synchronized void close() |
| D. | None of the above |
| Answer» C. public synchronized void close() | |
| 136. |
Which type of inheritance one super-class have more than one sub-class? |
| A. | Hierarchical inheritance |
| B. | Single inheritance |
| C. | Multiple inheritances |
| D. | Multilevel inheritance |
| Answer» B. Single inheritance | |
| 137. |
If a subclass has the same method as declared in the parent class it is known as ______. |
| A. | Method overriding |
| B. | Method overloading |
| C. | Constructor overloading |
| D. | None of the above |
| Answer» B. Method overloading | |
| 138. |
Which is not a XML function? |
| A. | Transport information |
| B. | Style information |
| C. | Store information |
| D. | Structure information |
| Answer» C. Store information | |
| 139. |
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 |
| Answer» E. | |
| 140. |
Which is not a W3C-recommended specification? |
| A. | SAX |
| B. | DOM |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. DOM | |
| 141. |
How many steps are used to connect any java application using JDBC? |
| A. | 5 |
| B. | 4 |
| C. | 3 |
| D. | 6 |
| Answer» B. 4 | |
| 142. |
Which method is used in thread class to starts the execution of the thread? |
| A. | public void start() |
| B. | public void run() |
| C. | public void stop() |
| D. | public void suspend() |
| Answer» B. public void run() | |
| 143. |
In the elements of Hibernate architecture is a factory of session and client of ConnectionProvider, It holds the second level cache (optional) of data is _____. |
| A. | Session |
| B. | SessionFactory |
| C. | Transaction |
| D. | ConnectionProvider |
| Answer» C. Transaction | |
| 144. |
Which is a one-way communication only between the client and the server, which is not only a reliable but also there is no confirmation regarding reaching the message to the destination? |
| A. | TCP/IP |
| B. | UDP |
| C. | Both A & B |
| D. | None of the above |
| Answer» C. Both A & B | |
| 145. |
Which stream does Java application uses to read data from a source, it may be a file, an array, peripheral device or socket? |
| A. | InputStream |
| B. | OutputStream |
| C. | Input/OutputStream |
| D. | None of the above |
| Answer» B. OutputStream | |
| 146. |
Which character in the XML Element will generate an error because the parser interprets it as the start of a new element? |
| A. | " < " |
| B. | "&" |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. "&" | |
| 147. |
A valueStack is a simply stack that contains application specific object is _____ . |
| A. | Action objects |
| B. | Model object |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 148. |
Which method in thread class causes the currently executing thread object to temporarily pause and allow other threads to execute? |
| A. | public boolean isAlive() |
| B. | public int getId() |
| C. | public void yield() |
| D. | public boolean isDaemon() |
| Answer» D. public boolean isDaemon() | |
| 149. |
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» B. jsp:forward | |
| 150. |
From where the SequenceInputStream class is used to read data? |
| A. | Single Stream |
| B. | Multiple streams |
| C. | Multilevel Streams |
| D. | None of the above |
| Answer» C. Multilevel Streams | |