TCS NQT practice Technical Questions set 3
61. Recursion is executed in which order :
A. LIFO
B. FIFO
C. Random
D. All of the above
Ans. A
62. Which of the following ADT’s can be used to represent a many-a-many relation ?
A. Tree
B. Stack
C. Graph
D. Queue
Ans. C
63. Merge Sort algorithm is based on which algorithmic technique :
A. D&C
B. Dynamic Programming
C. Greedy
D. Brute Force
Ans. A
64. What will be the time complexity to add an element to the queue?
A. O(1)
B. O(log n)
C. O(n)
D. O(nlogn)
Ans. A
65. A sorting algorithm iteratively traverses through a list to exchange the first element with any element less than it. It then repeats with a new first element. What is this sorting algorithm called ?
A. Insertion Sort
B. Selection Sort
C. Heap Sort
D. Quick Sort
Ans. A
66. The C Processors are specified with _______ symbol.
A. *
B. #
C. $
D. “
Ans. B
67. A variable declared in a function can be used in main ?
A. True
B. False
C. True if declared static
D. None of the above
Ans. B
68. Which is not a valid C statement :
A. int _t=0;
B. int Main=2;
C. float rate;
D. int $main;
Ans. D
69. What is the default return type if it is not specified in function definition ?
A. void
B. int
C. double
D. short int
Ans. A
70. A programmer tries to debug a code of 10,000 lines. It is known that there is a logical error in the first 25 lines of the code. Which of the following is an efficient way to debug the code ?
A. Compile and check line by line
B. Use interpreter on the first 25 lines of code
C. Compile and run the entire code
D. None of the above
Ans. B
71. In Stack, when top reaches to -1, the stack is said to be :
A. Overflow
B. Underflow
C. inflow
D. Runtime Error
Ans. B
72. When double is converted to float then the value is ?
A. Truncated
B. Rounded
C. Depends upon compiler
D. None of the above
Ans. C
73. This keyword is used for defining new data type names.
A. docstring
B. typedef
C. both
D. None of them
Ans. B
74. Which precision specifier the number of significant digits ?
A. %g
B. %G
C. %f
D. Both a and b
Ans. D
75. Control can be made out of recursion using :
A. pass
B. break
C. return
D. exit
Ans. C
76. 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
77. 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
78. Which can never be called by using call by value method :
A. Structure
B. Union
C. Array
D. All of the above
Ans. C
79. 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
80. In order to display address, we need :
A. %q
B. %a
C. %p
D. None of the mentioned
Ans. C
81. 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
82. What is the use of ‘%%’ specifier ?
A. Finding remainder
B. Finding quotient
C. Printing % sign
D. None of the above
Ans. C
83. 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
84. Which is used to find and fix bugs in the java programs ?
A. JVM
B. JRE
C. JDK
D. JDB
Ans. D
85. 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
86. 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
87. Number of threads that can be executed at a time ?
A. 1
B. Multiple
C. Main Thread
D. 2
Ans. B
88. Which is a wrong keyword as a access modifier ?
A. public
B. default
C. protected
D. private
Ans. B
89. 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
90. Which of the following is a reserved keyword in Java?
A. strictfp
B. String
C. main
D. system
Ans. A
