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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.
| 201. |
The following two rules are defined by? 1. The parameters may differ in their type or number, or in both. 2. They may have the same or different return types. |
| A. | Method overloading |
| B. | Method overriding |
| C. | Constructor overloading |
| D. | None of the above |
| Answer» B. Method overriding | |
| 202. |
In Method overriding a subclass in a different package can only override the non-final methods declared public or protected |
| A. | True |
| B. | False |
| Answer» B. False | |
| 203. |
Which allows you to define one interface and have multiple implementations? |
| A. | Encapsulation |
| B. | Inheritance |
| C. | Polymorphism |
| D. | None of the above |
| Answer» D. None of the above | |
| 204. |
Which is used for writing data to a file in file handling? |
| A. | FileInputStream |
| B. | FileOutputStream |
| C. | Both A & B |
| D. | None of the above |
| Answer» C. Both A & B | |
| 205. |
In which state is the thread after invocation of start() method, but the thread Scheduler has not selected it to be the running thread? |
| A. | Running |
| B. | Runnable |
| C. | Terminated |
| D. | Non-Runnable |
| Answer» C. Terminated | |
| 206. |
Which one of the following scopes does the attribute in servlet is an object that can be set, get or removed? |
| A. | session scope |
| B. | request scope |
| C. | application scope |
| D. | All mentioned above |
| Answer» E. | |
| 207. |
Constructor does not perform other tasks instead of initialization |
| A. | True |
| B. | False |
| Answer» C. | |
| 208. |
Which package is used for analyzing code during run time? |
| A. | java.lang.reflect |
| B. | java.awt |
| C. | java.io |
| D. | java.applet |
| Answer» B. java.awt | |
| 209. |
The JDK forms an extended subset of a software development kit (SDK) |
| A. | True |
| B. | False |
| Answer» B. False | |
| 210. |
Which mechanism is provided to handle the runtime errors so that normal flow of the application can be maintained? |
| A. | Exception Handling |
| B. | String Handling |
| C. | Event Handling |
| D. | None of the above |
| Answer» B. String Handling | |
| 211. |
Datagram is basically an information but there is no guarantee of its content, arrival or arrival time. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 212. |
Which Characters are illegal in XML elements? |
| A. | " < " |
| B. | "&" |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 213. |
Which middleware services are provided by EJB? |
| A. | Security |
| B. | Transaction Management |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 214. |
In RMI which layer defines and supports the invocation semantics of the RMI connection and this layer maintains the session during the method call? |
| A. | The Stub & Skeleton Layer |
| B. | The Application Layer |
| C. | The Remote Reference Layer |
| D. | The Transport Layer |
| Answer» D. The Transport Layer | |
| 215. |
A JSP page consists of which tags? |
| A. | HTML tags |
| B. | JSP tags |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 216. |
The JDBC API is what allows access to a data source from a Java middle tier |
| A. | True |
| B. | False |
| Answer» B. False | |
| 217. |
Many threads at a time can run in a single process |
| A. | True |
| B. | False |
| Answer» C. | |
| 218. |
The CharArrayWriter class is not used to write data to multiple files |
| A. | True |
| B. | False |
| Answer» C. | |
| 219. |
Which data type has this Minimum and Maximum value from 3.4e-038 to 3.4e+038? |
| A. | long |
| B. | Int |
| C. | Byte |
| D. | Float |
| Answer» E. | |
| 220. |
Which containers are used to keep the class name space compartmentalized? |
| A. | Packages |
| B. | Applet |
| C. | Browser |
| D. | None of the above |
| Answer» B. Applet | |
| 221. |
How many core components does the Model-View-Controller pattern in Struts2 have? |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 3 |
| Answer» C. 6 | |
| 222. |
Which are the examples of Application Server? |
| A. | Apache |
| B. | Tomcat |
| C. | JBoss |
| D. | Weblogic |
| E. | Both C & D |
| Answer» F. | |
| 223. |
XML is designed to store data and _____. |
| A. | Design |
| B. | Verify |
| C. | Transport |
| D. | Both A & B |
| Answer» D. Both A & B | |
| 224. |
Which type of instances retain no data or conversational state for a specific client? |
| A. | Message-Driven Bean |
| B. | Session Bean |
| C. | Entity Bean |
| D. | None of the above |
| Answer» B. Session Bean | |
| 225. |
The Following steps are required to perform (1) Implement the Listener interface and overrides its methods (2) Register the component with the Listener |
| A. | Exception Handling |
| B. | String Handling |
| C. | Event Handling |
| D. | None of the above |
| Answer» D. None of the above | |
| 226. |
Which are the XML Syntax rules? |
| A. | All XML Elements Must Have a Closing Tag |
| B. | XML Tags are not Case Sensitive |
| C. | XML Elements Must be Properly Nested |
| D. | Both A & C |
| Answer» E. | |
| 227. |
XML documents must contain a root element; this element is "the parent" of all other elements |
| A. | True |
| B. | False |
| Answer» B. False | |
| 228. |
The URLConnection class can be used to read and write data to the specified resource referred by the URL |
| A. | True |
| B. | False |
| Answer» B. False | |
| 229. |
The client in socket programming must know which informations? |
| A. | IPaddress of Server |
| B. | Port number |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 230. |
Which type of java package that contains wide range of classes and methods are used for performing different functionalities? |
| A. | User Defined Package |
| B. | Java System Packages |
| C. | User System Packages |
| D. | None of the above |
| Answer» C. User System Packages | |
| 231. |
Find whether these two rules are correct or not defined by the constructor 1. Constructor name must be same as its class name. 2. Constructor must have no explicit return type. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 232. |
Which driver converts JDBC calls directly into the vendor-specific database protocol? |
| A. | Native - API driver |
| B. | Network Protocol driver |
| C. | Thin driver |
| D. | Both B & C |
| Answer» D. Both B & C | |
| 233. |
Which are also known as inner classes? |
| A. | Non-static nested class |
| B. | Static nested class |
| C. | Nested class |
| D. | None of the above |
| Answer» B. Static nested class | |
| 234. |
Which classes are used for connection-less socket programming? |
| A. | DatagramSocket |
| B. | DatagramPacket |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 235. |
When an applet begins, in which sequence will the AWT call the methods? |
| A. | init(),paint(),start() |
| B. | Start(),paint(),init() |
| C. | intit(),start(),paint() |
| D. | paint(),start(),init() |
| Answer» D. paint(),start(),init() | |
| 236. |
Void is not a wrapper class |
| A. | True |
| B. | False |
| Answer» B. False | |
| 237. |
Package does not provide access protection |
| A. | True |
| B. | False |
| Answer» C. | |
| 238. |
Which type of polymorphism is nothing but the method overloading in java? |
| A. | Compile time polymorphism |
| B. | Runtime polymorphism |
| C. | Static polymorphism |
| D. | Both A & C |
| Answer» E. | |
| 239. |
Which class can be used to read data line by line using the readLine() method? |
| A. | BufferedReader |
| B. | InputStreamReader |
| C. | DataInputStream |
| D. | None of the above |
| Answer» B. InputStreamReader | |
| 240. |
Which is nothing but a blueprint or a template for creating different objects which defines its properties and behaviours? |
| A. | An Array |
| B. | A class |
| C. | Interface |
| D. | None of the above |
| Answer» C. Interface | |
| 241. |
XML is the most common tool for data transmissions between all sorts of applications |
| A. | True |
| B. | False |
| Answer» B. False | |
| 242. |
Generally string is a sequence of characters, But in java, string is an _______. |
| A. | Object |
| B. | Class |
| C. | Package |
| D. | None of the above |
| Answer» B. Class | |
| 243. |
Which block contains a block of program statements where an exception might occur? |
| A. | Catch |
| B. | try |
| C. | throw |
| D. | final |
| Answer» C. throw | |
| 244. |
In JSP how many ways are there to perform exception handling? |
| A. | 3 |
| B. | 2 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 245. |
Which JDBC drivers will run your program? |
| A. | The JDBC-ODBC bridge |
| B. | The JDBC driver manager |
| C. | The JDBC driver test suite |
| D. | None of the above |
| Answer» D. None of the above | |
| 246. |
Which package provides core functionality? |
| A. | java.net |
| B. | java.rmi |
| C. | java.lang |
| D. | java.math |
| Answer» D. java.math | |
| 247. |
Which is a software- and hardware-independent tool for carrying information? |
| A. | HTML |
| B. | XML |
| C. | Both A & B |
| D. | None of the above |
| Answer» C. Both A & B | |
| 248. |
Which class is used to create servers that listen for either local client or remote client programs? |
| A. | ServerSockets |
| B. | httpServer |
| C. | httpResponse |
| D. | None of the above |
| Answer» B. httpServer | |
| 249. |
Which method is used to suspend threads that don’t need to run when the applet is not visible? |
| A. | destroy() |
| B. | paint() |
| C. | stop() |
| D. | start() |
| Answer» D. start() | |
| 250. |
Which internet language is used for describing available web services in XML? |
| A. | WSDL |
| B. | RSS |
| C. | RDF |
| D. | OWL |
| Answer» B. RSS | |