48 + Mcqs in Technical/Interview - Birlasoft Page 1 McqOptions

1.	JVM stands for?
A.	Java Very Large Machine
B.	Java Verified Machine
C.	Java Very Small Machine
D.	Java Virtual Machine
Answer» E.

Discussion

2.	Which keyword is used by classes to implement an interface?
A.	import
B.	implements
C.	instance of
D.	None of the above
Answer» C. instance of

Discussion

3.	Abbreviate the term POJO?
A.	Plain Old Java Object
B.	Performance Old Java Object
C.	Performance Optimize Java Object
D.	None of the above
Answer» B. Performance Old Java Object

Discussion

4.	Struts supports which of these model components?
A.	JavaBeans
B.	EJB
C.	CORBA
D.	All Mentioned above
Answer» E.

Discussion

5.	Unchecked exceptions are checked at compile-time rather they are checked at runtime.
A.	True
B.	False
Answer» C.

Discussion

6.	Which method returns the interrupted flag after that it sets the flag to false if it is true?
A.	isInterrupted()
B.	static interrupted()
C.	non static interrupted()
D.	Both A & C
Answer» C. non static interrupted()

Discussion

7.	From the following statements which is a disadvantage of an java array?
A.	An array can hold primitive types data
B.	An array has its size that is known as array length
C.	An array knows only its type that it contains. Array type is checked at the compile-time
D.	An array holds only one type of data
Answer» E.

Discussion

8.	The following Syntax is used for? class Subclass-name extends Superclass-name  {  //methods and fields  }
A.	Polymorphism
B.	Encapsulation
C.	Inheritance
D.	None of the above
Answer» D. None of the above

Discussion

9.	Which method when implemented must return true while there are still more elements to extract, and false when all the elements have been enumerated?
A.	Object nextElement( )
B.	boolean hasMoreElements( )
C.	Both A & B
D.	None of the above
Answer» C. Both A & B

Discussion

10.	Where are the following four methods commonly used? 1) public void add(Component c) 2) public void setSize(int width,int height) 3) public void setLayout(LayoutManager m) 4) public void setVisible(boolean)
A.	Graphics class
B.	Component class
C.	Both A & B
D.	None of the above
Answer» C. Both A & B

Discussion

11.	Implement the Listener interface and overrides its methods is required to perform in event handling.
A.	True
B.	False
Answer» C.

Discussion

12.	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

Discussion

13.	These two ways are used to create a Frame By creating the object of Frame class (association) By extending Frame class (inheritance)
A.	True
B.	False
Answer» B. False

Discussion

14.	In Servlet Terminology what provides runtime environment for JavaEE (j2ee) applications. It performs many operations that are given below: 1. Life Cycle Management 2. Multithreaded support 3. Object Pooling 4. Security etc.
A.	Server
B.	Webserver
C.	Container
D.	Application Server
Answer» D. Application Server

Discussion

15.	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

Discussion

16.	An applet can play an audio file represented by the AudioClip interface in the java, applet package Causes the audio clip to replay continually in which method?
A.	public void play()
B.	public void loop()
C.	public void stop()
D.	None of the above
Answer» C. public void stop()

Discussion

17.	Which are the common security restrictions in applets?
A.	Applets cant load libraries or define native methods
B.	An applet cant read every system property
C.	Applets can play sounds
D.	Both A & B
Answer» E.

Discussion

18.	In order to transfer data between a database and an application written in the Java programming language, the JDBC API provides which of these methods?
A.	Methods on the ResultSet class for retrieving SQL SELECT results as Java types.
B.	Methods on the PreparedStatement class for sending Java types as SQL statement parameters.
C.	Methods on the CallableStatement class for retrieving SQL OUT parameters as Java types.
D.	All mentioned above
Answer» E.

Discussion

19.	The JDBC API has always supported persistent storage of objects defined in the Java programming language through the methods getObject and setObject.
A.	True
B.	False
Answer» C.

Discussion

20.	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

Discussion

21.	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

Discussion

22.	How many Result sets available with the JDBC 2.0 core API?
A.	2
B.	3
C.	4
D.	5
Answer» D. 5

Discussion

23.	Abbreviate the term UDA?
A.	Unified Data Access
B.	Universal Data Access
C.	Universal Digital Access
D.	Uniform Data Access
Answer» C. Universal Digital Access

Discussion

24.	What technique is used for the authentication mechanism in the servlet specification?
A.	Role Based Authentication
B.	Form Based Authentication
C.	Both A & B
D.	None of the above
Answer» B. Form Based Authentication

Discussion

25.	Which attribute specifies a JSP page that should process any exceptions thrown but not caught in the current page?
A.	The ErrorPage Attribute
B.	The IsErrorPage Attribute
C.	Both A & B
D.	None of the above
Answer» B. The IsErrorPage Attribute

Discussion

26.	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

Discussion

27.	Which is an object, acts as a gateway for the client side, all the outgoing requests are routed through it and it resides at the client side and represents the remote object?
A.	Stub
B.	Skeleton
C.	Both A & B
D.	None of the above
Answer» B. Skeleton

Discussion

28.	Which services are provided to EJB components by the EJB container?
A.	Transaction support
B.	Persistence support
C.	Naming support
D.	All mentioned above
Answer» E.

Discussion

29.	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

Discussion

30.	Connection Pooling Class manages no of user requests for connections to improve the performance.
A.	True
B.	False
Answer» B. False

Discussion

31.	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» E.

Discussion

32.	What does the following declaration mean?
A.	ptr is array of pointers to 10 integers
B.	ptr is a pointer to an array of 10 integers
C.	ptr is an array of 10 integers
D.	ptr is an pointer to array
Answer» C. ptr is an array of 10 integers

Discussion

33.	How will you free the allocated memory?
A.	remove(var-name);
B.	free(var-name);
C.	delete(var-name);
D.	dalloc(var-name);
Answer» C. delete(var-name);

Discussion

34.	In the following code, the P2 is Integer Pointer or Integer?  typedef int *ptr; ptr p1, p2;
A.	Integer
B.	Integer pointer
C.	Error in declaration
D.	None of the above
Answer» C. Error in declaration

Discussion

35.	In the following code what is 'P'?  typedef char *charp; const charp P;
A.	P is a constant
B.	P is a character constant
C.	P is character type
D.	None of the above
Answer» B. P is a character constant

Discussion

36.	What is x in the following program?  #include<stdio.h> int main() {      typedef char ((arrfptr[3])())[10];      arrfptr x;      return 0; }
A.	x is a pointer
B.	x is an array of three pointer
C.	x is an array of three function pointers
D.	Error in x declaration
Answer» D. Error in x declaration

Discussion

37.	How will you free the memory allocated by the following program?  #include<stdio.h> #include<stdlib.h> #define MAXROW 3 #define MAXCOL 4 int main() {      int p, i, j;      p = (int ) malloc(MAXROW * sizeof(int*));      return 0; }
A.	memfree(int p);
B.	dealloc(p);
C.	malloc(p, 0);
D.	free(p);
Answer» E.

Discussion

38.	What do the following declaration signify?
A.	pf is a pointer to function.
B.	pf is a function pointer.
C.	pf is a pointer to a function which return int
D.	pf is a function of pointer variable.
Answer» D. pf is a function of pointer variable.

Discussion

39.	What do the following declaration signify?
A.	argv is a pointer to pointer.
B.	argv is a pointer to a char pointer.
C.	argv is a function pointer.
D.	argv is a member of function pointer.
Answer» C. argv is a function pointer.

Discussion

40.	Which among the following is right?
A.	sizeof(struct stemp) > sizeof(union utemp) > sizeof(char *)
B.	sizeof(struct stemp) < sizeof(union utemp) < sizeof(char *)
C.	sizeof(struct stemp) = sizeof(union utemp) = sizeof(char *)
D.	The order Depends on the compiler
Answer» D. The order Depends on the compiler

Discussion

41.	The maximum combined length of the command-line arguments including the spaces between adjacent arguments is
A.	128 characters
B.	256 characters
C.	67 characters
D.	It may vary from one operating system to another
Answer» E.

Discussion

42.	What do the 'c' and 'v' in argv stands for?
A.	c means argument control v means argument vector
B.	c means argument count v means argument vertex
C.	c means argument count v means argument vector
D.	c means argument configuration v means argument visibility
Answer» D. c means argument configuration v means argument visibility

Discussion

43.	Specify the 2 library functions to dynamically allocate memory?
A.	malloc() and memalloc()
B.	alloc() and memalloc()
C.	malloc() and calloc()
D.	memalloc() and faralloc()
Answer» D. memalloc() and faralloc()

Discussion

44.	Input/output function prototypes and macros are defined in which header file?
A.	conio.h
B.	stdlib.h
C.	stdio.h
D.	dos.h
Answer» D. dos.h

Discussion

45.	What is the sequence for preprocessor to look for the file within <> ?
A.	The predefined location then the current directory
B.	The current directory then the predefined location
C.	The predefined location only
D.	The current directory location
Answer» B. The current directory then the predefined location

Discussion

46.	How is search done in #include and #include "somelibrary.h" according to C standard?
A.	When former is used, current directory is searched and when latter is used, standard directory is searched
B.	When former is used, standard directory is searched and when latter is used, current directory is searched
C.	When former is used, search is done in implementation defined manner and when latter is used, current directory is searched
D.	For both, search for ‘somelibrary’ is done in implementation-defined places
Answer» E.

Discussion

47.	In what ratio must water be mixed with milk to gain 16 2/3 % by selling the mixture at cost price?
A.	1:6
B.	2:3
C.	4:3
D.	6:1
Answer» B. 2:3

Discussion

48.	Two vessels P and Q contain 62.5% and 87.5% of alcohol respectively. If 2 litres from vessel P is mixed with 4 litres from vessel Q, the ratio of alcohol and water in the resulting mixture is?
A.	16 : 5
B.	14 : 5
C.	16 : 7
D.	19 : 5
Answer» E.

Discussion

Explore topic-wise MCQs in Birlasoft.

JVM stands for?

Which keyword is used by classes to implement an interface?

&nbsp;Abbreviate the term POJO?

Struts supports which of these model components?

Unchecked exceptions are checked at compile-time rather they are checked at runtime.

Which method returns the interrupted flag after that it sets the flag to false if it is true?

From the following statements which is a disadvantage of an java array?

The following Syntax is used for? class Subclass-name extends Superclass-name&nbsp; {&nbsp; //methods and fields&nbsp; }

Which method when implemented must return true while there are still more elements to extract, and false when all the elements have been enumerated?

&nbsp;Where are the following four methods commonly used? 1) public void add(Component c) 2) public void setSize(int width,int height) 3) public void setLayout(LayoutManager m) 4) public void setVisible(boolean)

&nbsp;Implement the Listener interface and overrides its methods is required to perform in event handling.

&nbsp;Which is the container that doesn&#39;t contain title bar and MenuBars but it can have other components like button, textfield etc?

These two ways are used to create a Frame By creating the object of Frame class (association) By extending Frame class (inheritance)

In Servlet Terminology what provides runtime environment for JavaEE (j2ee) applications. It performs many operations that are given below: 1. Life Cycle Management 2. Multithreaded support 3. Object Pooling 4. Security etc.

The following example shows the creation of a&nbsp; import java.applet.*; import java.awt.*; public class Main extends Applet{ public void paint(Graphics g){ g.drawString(&quot;Welcome in Java Applet.&quot;,40,20); } } &nbsp;

An applet can play an audio file represented by the AudioClip interface in the java, applet package Causes the audio clip to replay continually in which method?

Which are the common security restrictions in applets?

&nbsp;In order to transfer data between a database and an application written in the Java programming language, the JDBC API provides which of these methods?

The JDBC API has always supported persistent storage of objects defined in the Java programming language through the methods getObject and setObject.

Which JDBC type represents a &quot;single precision&quot; floating point number that supports seven digits of mantissa?

&nbsp;Which method is used for retrieving streams of both ASCII and Unicode characters is new in the JDBC 2.0 core API?

&nbsp;How many Result sets available with the JDBC 2.0 core API?

Abbreviate the term UDA?

What technique is used for the authentication mechanism in the servlet specification?

Which attribute specifies a JSP page that should process any exceptions thrown but not caught in the current page?

In RMI Architecture which layer Intercepts method calls made by the client/redirects these calls to a remote RMI service?

&nbsp;Which is an object, acts as a gateway for the client side, all the outgoing requests are routed through it and it resides at the client side and represents the remote object?

&nbsp;Which services are provided to EJB components by the EJB container?

&nbsp;Which case of a session bean obtains the UserTransaction object via the EJBContext using the getUserTransaction() method in EJB transaction management?

&nbsp;&nbsp;&nbsp;Connection Pooling Class manages no of user requests for connections to improve the performance.

Which object of HttpSession can be used to view and manipulate information about a session?

What does the following declaration mean?

How will you free the allocated memory?&nbsp;

&nbsp;In the following code, the P2 is Integer Pointer or Integer?&nbsp; typedef int *ptr; ptr p1, p2;&nbsp;

In the following code what is &#39;P&#39;?&nbsp; typedef char *charp; const charp P;&nbsp;

What is x in the following program?&nbsp; #include&lt;stdio.h&gt; int main() { &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;typedef char (*(*arrfptr[3])())[10]; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;arrfptr x; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return 0; }&nbsp;

What do the following declaration signify?&nbsp;

&nbsp;&nbsp;What do the following declaration signify?&nbsp;

&nbsp;Which among the following is right?&nbsp;

The maximum combined length of the command-line arguments including the spaces between adjacent arguments is&nbsp;

&nbsp;What do the &#39;c&#39; and &#39;v&#39; in argv stands for?&nbsp;

Specify the 2 library functions to dynamically allocate memory?&nbsp;

&nbsp;Input/output function prototypes and macros are defined in which header file?

&nbsp;What is the sequence for preprocessor to look for the file within &lt;&gt; ?

&nbsp;How is search done in #include and #include &quot;somelibrary.h&quot; according to C standard?

In what ratio must water be mixed with milk to gain 16 2/3 % by selling the mixture at cost price?

Two vessels P and Q contain 62.5% and 87.5% of alcohol respectively. If 2 litres from vessel P is mixed with 4 litres from vessel Q, the ratio of alcohol and water in the resulting mixture is?

Abbreviate the term POJO?

The following Syntax is used for? class Subclass-name extends Superclass-name { //methods and fields }

Where are the following four methods commonly used? 1) public void add(Component c) 2) public void setSize(int width,int height) 3) public void setLayout(LayoutManager m) 4) public void setVisible(boolean)

Implement the Listener interface and overrides its methods is required to perform in event handling.

Which is the container that doesn't contain title bar and MenuBars but it can have other components like button, textfield etc?

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); } }

In order to transfer data between a database and an application written in the Java programming language, the JDBC API provides which of these methods?

Which JDBC type represents a "single precision" floating point number that supports seven digits of mantissa?

Which method is used for retrieving streams of both ASCII and Unicode characters is new in the JDBC 2.0 core API?

How many Result sets available with the JDBC 2.0 core API?

Which is an object, acts as a gateway for the client side, all the outgoing requests are routed through it and it resides at the client side and represents the remote object?

Which services are provided to EJB components by the EJB container?

Which case of a session bean obtains the UserTransaction object via the EJBContext using the getUserTransaction() method in EJB transaction management?

Connection Pooling Class manages no of user requests for connections to improve the performance.

How will you free the allocated memory?

In the following code, the P2 is Integer Pointer or Integer? typedef int *ptr; ptr p1, p2;

In the following code what is 'P'? typedef char *charp; const charp P;

What is x in the following program? #include<stdio.h> int main() { typedef char ((arrfptr[3])())[10]; arrfptr x; return 0; }

What do the following declaration signify?

What do the following declaration signify?

Which among the following is right?

The maximum combined length of the command-line arguments including the spaces between adjacent arguments is

What do the 'c' and 'v' in argv stands for?

Specify the 2 library functions to dynamically allocate memory?

Input/output function prototypes and macros are defined in which header file?

What is the sequence for preprocessor to look for the file within <> ?

How is search done in #include and #include "somelibrary.h" according to C standard?