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nqt technical questions

Q76. In order to display address, we need :

A. %q
B. %a
C. %p
D. None of the mentioned

Ans. C

Q77. Which of the following does not initialize ptr to null (assume a = 0) ?

A. int *ptr = &a;
B. int *ptr = &a – &a;
C. int *ptr = a – a;
D. All of the above

Ans. A

Q78. When a function is called by itself again and again, then it is :

A. call by value
B. call by reference
C. recursion
D. System Call

Ans. C

Q79. Which can never be called by using call by value method :

A. Structure
B. Union
C. Array
D. All of the above

Ans. C

Q80. What is the maximum number of arguments that can be passed in a single function ?

A. 341
B. 263
C. 253
D. 308

Ans. C

Q81. Problems associated with dangling pointer can be solved :

A. Assigning it to garbage value
B. Assigning it to NULL value
C. Assigning it to 0
D. None of these

Ans. C

Q82. Which header file can be used to define i/o function prototypes and macros?

A. stdio.h
B. conio.h
C. stlib.h
D. alloc.h

Ans. A

Q83. What is the use of ‘%%’ specifier ?

A. Finding remainder
B. Finding quotient
C. Printing % sign
D. None of the above

Ans. C

Q84. Which of the following statement is wrong about Java Programming ?

A. Java is compiled and Interpreted
B. Java follows OOPs paradigm
C. Java uses destructors to undo work done by constructors
D. Java is platform independent

Ans. C

Q85. Which is used to find and fix bugs in the java programs ?

A. JVM
B. JRE
C. JDK
D. JDB

Ans. D

Q86. Which of the following is a reserved keyword in Java?

A. strictfp
B. String
C. main
D. system

Ans. A

Q87. Which of the following is a mutable class in Java ?

A. java.lang.String
B. java.lang.Byte
C. java.lang.Short
D. java.lang.StringBuilder

Ans. D

Q88. Number of threads that can be executed at a time ?

A. 1
B. Multiple
C. Main Thread
D. 2

Ans. B

Q89. Which is a wrong keyword as a access modifier ?

A. public
B. default
C. protected
D. private

Ans. B

Q90. Class X extends Y implements Z shows what kind of a relationship ?

A. X is a Y, X is a Z
B. X has a Z
C. X is a Y, has a Z
D. None of these

Ans. A

Q91. Method overloading does not allow :

A. Difference in no. of arguments.
B. Difference in Arguments data type.
C. Difference in return type.
D. Difference in method name.

Ans. D

Q92. If a common property is referred by many objects of same class, then that property must be declared as _ in class.

A. static
B. void
C. transient
D. final

Ans. A

Q93. Which is a wrong combination of keywords ?

A. public abstract
B. static abstract
C. static final
D. None of these

Ans. B

Q94. How can you read the content of a class file on console ?

A. java
B. javap
C. javac
D. javadoc

Ans. C

Q95. How many type of Primitive Data Types exist in Java?

A. 4
B. 6
C. 8
D. 12

Ans. C

Q96. If you access an uninitialized local variable will result?

A. 0 will be printed
B. Runtime Error
C. Compile Error
D. None of these

Ans. C

Q97. Which Class provides you a Mutable String with thread safe and thread unsafe operations ?

A. String & StringBuilder
B. StringBuilder & StringBuffer
C. String & StringBuffer
D. None of these

Ans. B

Q98. How to sort an array in Java ?

A. Array.sort()
B. Arrays.sort()
C. Collection.sort()
D. System.sort()

Ans. B

Q99. An array elements are always stored in __ memory locations.

A. Sequential
B. Random
C. Both
D. None

Ans. A

Q100. What is the order of variables in Enum in Java ?

A. Ascending order
B. Descending order
C. Random order
D. Depends on the order() method.

Ans. A

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