MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The PipedInputStream and PipedOutputStream classes can be used to read and write data simultaneously. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Implement the Listener interface and overrides its methods is required to perform in event handling. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which is the container that doesn't contain title bar and MenuBars but it can have other components like button, textfield etc? |
| A. | Window |
| B. | Frame |
| C. | Panel |
| D. | Container |
| Answer» D. Container | |
| 4. |
The following example shows the creation of a import java.applet.*; import java.awt.*; public class Main extends Applet{ public void paint(Graphics g){ g.drawString("Welcome in Java Applet.",40,20); } } |
| A. | Banner using Applet |
| B. | Basic Applet |
| C. | Display clock |
| D. | None of the above |
| Answer» C. Display clock | |
| 5. |
Which JDBC type represents a "single precision" floating point number that supports seven digits of mantissa? |
| A. | REAL |
| B. | DOUBLE |
| C. | FLOAT |
| D. | INTEGER |
| Answer» B. DOUBLE | |
| 6. |
Which method is used for retrieving streams of both ASCII and Unicode characters is new in the JDBC 2.0 core API? |
| A. | getCharacterStream |
| B. | getBinaryStream |
| C. | getAsciiStream |
| D. | getUnicodeStream |
| Answer» B. getBinaryStream | |
| 7. |
Abbreviate the term UDA? |
| A. | Unified Data Access |
| B. | Universal Data Access |
| C. | Universal Digital Access |
| D. | Uniform Data Access |
| Answer» B. Universal Data Access | |
| 8. |
In RMI Architecture which layer Intercepts method calls made by the client/redirects these calls to a remote RMI service? |
| A. | Stub & Skeleton Layer |
| B. | Application Layer |
| C. | Remote Reference Layer |
| D. | Transport Layer |
| Answer» B. Application Layer | |
| 9. |
Which case of a session bean obtains the UserTransaction object via the EJBContext using the getUserTransaction() method in EJB transaction management? |
| A. | Bean-managed transactions |
| B. | Container-managed transactions |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. Container-managed transactions | |
| 10. |
Connection Pooling Class manages no of user requests for connections to improve the performance |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
Break statement in switch case |
| A. | prevents from fallthrough |
| B. | causes an exit from innermost loop |
| C. | both a and b |
| D. | none |
| Answer» D. none | |
| 12. |
Fallthrough in a switch case statement |
| A. | prevents the next case after the matching block to be executed |
| B. | Allows the next case after the matching block to be executed |
| C. | no fallthorugh occurs in switch case |
| D. | none |
| Answer» C. no fallthorugh occurs in switch case | |
| 13. |
Overloaded methods in java |
| A. | Compiler uses method signature to determine which method to invoke. They may have different functionality |
| B. | They are not available in fundamental classes |
| C. | They have the same name and signature |
| Answer» B. They are not available in fundamental classes | |
| 14. |
Which Java.Lang contains only static methods? |
| A. | Math ,System |
| B. | Number,Exception |
| C. | There is no such class |
| D. | none |
| Answer» B. Number,Exception | |
| 15. |
Invoking methods characteristics |
| A. | methods can be invoked in any order and calling method should be in same class as worker method |
| B. | Worker method and calling method can be invoked in same way |
| C. | Any method can call any method |
| Answer» B. Worker method and calling method can be invoked in same way | |
| 16. |
Constructor chaining is |
| A. | subclass constructor calling super class constructor |
| B. | super class constructor calling subclass constructor |
| C. | both |
| D. | none |
| Answer» B. super class constructor calling subclass constructor | |
| 17. |
Abstract class vs Interface |
| A. | A class may inherit only one abstract class but may inherit several interfaces. |
| B. | An abstract class can provide complete and default code but an interface has no code |
| C. | both a and b |
| D. | none |
| Answer» D. none | |
| 18. |
Use of preprocessor directive in OOP |
| A. | for conditional compilation |
| B. | for macro expansion |
| C. | error and warning reporting |
| D. | all the above |
| Answer» E. | |
| 19. |
Pure virtual function is used |
| A. | to give meaning to derived class function |
| B. | to give meaning to base class function |
| C. | to initialize all functions |
| D. | None |
| Answer» C. to initialize all functions | |
| 20. |
Function templates are considered equivalent when |
| A. | Declared in same scope |
| B. | Having same name |
| C. | Having identical return type and parameter list |
| D. | All of the above |
| Answer» E. | |
| 21. |
Function Templates can have |
| A. | Explicit instantiation definition with template argument for all parameters |
| B. | explicit instantiation of declaration with template argument for all parameters |
| C. | Both a and b |
| D. | None |
| Answer» D. None | |
| 22. |
An Abstract class |
| A. | allows normal method declaration within |
| B. | can be instantiated |
| C. | Must have abstract methods with implemetation within |
| D. | none |
| Answer» B. can be instantiated | |
| 23. |
The keyword 'this' is used |
| A. | As reference to current object |
| B. | Explicit constructor invocation |
| C. | In open recursion |
| D. | All the above |
| Answer» E. | |
| 24. |
Encapsulation helps |
| A. | information hiding |
| B. | in providing low coupling |
| C. | in providing high cohesion |
| D. | All the above |
| Answer» E. | |
| 25. |
Dynamic dispatch is a feature that |
| A. | selects which polymorphic operation to call at run time |
| B. | selects which polymorphic operation to call at compile time |
| C. | Both a and b |
| D. | None |
| Answer» C. Both a and b | |
| 26. |
Virtual keyword is used |
| A. | to remove static linkages |
| B. | to call function based on kind of object it is being called for |
| C. | to call the methods that dont exist at compile time |
| D. | all the above |
| Answer» E. | |
| 27. |
Why is user defined copy constructor required? |
| A. | there is no implicit copy constructor in C++ |
| B. | when pointers are involved implicit copy constructor does not give correct result |
| C. | both a and b |
| D. | none |
| Answer» C. both a and b | |
| 28. |
A copy constructor is called |
| A. | when an object is returned by value |
| B. | when an object is passed by value as an argument |
| C. | when compiler generates a temporary object |
| D. | all the above |
| Answer» E. | |
| 29. |
Which of the following is true about linked lists? |
| A. | Primary education |
| B. | Intermediate education |
| C. | Higher education |
| D. | Entire education system |
| Answer» D. Entire education system | |
| 30. |
What would be the output of following code? #include<stdio.h> int main(int argc,char **argv) { int iVar=0, iCnt, aiArr[] = {56,23,4,89,-200,34}; for(iCnt = 1; iCnt <6; iCnt++) { if(aiArr[iCnt] < aiArr[iVar]) iVar = iCnt; } printf("%d",iVar); return 0; } |
| A. | 4 |
| B. | 89 |
| C. | 3 |
| D. | -200 |
| Answer» B. 89 | |
| 31. |
When is a static variable initialized? |
| A. | Every time the function containing it is called. |
| B. | When it is globally declared. |
| C. | Only when declared within a function. |
| D. | Only the first time the function containing it is called |
| Answer» E. | |
| 32. |
Memory is allocated from_______________for each and every malloc function call |
| A. | Stack |
| B. | Heap |
| C. | Static memory area |
| D. | Cache |
| Answer» C. Static memory area | |