McqMate

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1. |
## It exports a set of operations |

A. | true, false |

B. | false, true |

C. | true, true |

D. | false, false |

Answer» C. true, true |

2. |
## A graph is said to be complete if there is no edge between every pair of vertices. |

A. | true, false, true |

B. | true, true, false |

C. | true, true, true |

D. | false, true, true |

Answer» B. true, true, false |

3. |
## Space Complexity iii) Is the strategy guaranteed to find the solution when there in one. |

A. | a-iii, b-ii, c-i |

B. | a-i, b-ii, c-iii |

C. | a-iii, b-i, c-ii |

D. | a-i, b-iii, c-ii |

Answer» C. a-iii, b-i, c-ii |

4. |
## The time complexity of binary search is O(logn). |

A. | true, false |

B. | false, true |

C. | false, false |

D. | true, true |

Answer» D. true, true |

5. |
## A graph is said to be complete if there is an edge between every pair of vertices. |

A. | true, true |

B. | false, true |

C. | false, false |

D. | true, false |

Answer» A. true, true |

6. |
## To find the predecessor, it is required to traverse the list from the first node in case of singly linked list. |

A. | i-only |

B. | ii-only |

C. | both i and ii |

D. | none of both |

Answer» C. both i and ii |

7. |
## Nodes that are not root and not leaf are called as internal nodes. |

A. | true, true |

B. | true, false |

C. | false, true |

D. | false, false |

Answer» C. false, true |

8. |
## A node is child node if out degree is one. |

A. | true, true |

B. | true, false |

C. | false, true |

D. | false, false |

Answer» B. true, false |

9. |
## Insertion b) Deletion c) Retrieval d) Traversal |

A. | only a,b and c |

B. | only a and b |

C. | all of the above |

D. | none of the above |

Answer» D. none of the above |

10. |
## In strictly binary tree, the out-degree of every node is either o or 2. |

A. | true, false |

B. | false, true |

C. | true, true |

D. | false, false |

Answer» C. true, true |

11. |
## The complexity of the average case of an algorithm is |

A. | much more complicated to analyze than that of worst case |

B. | much more simpler to analyze than that of worst case |

C. | sometimes more complicated and some other times simpler than that of worst case |

D. | none or above |

Answer» A. much more complicated to analyze than that of worst case |

12. |
## The Average case occur in linear search algorithm |

A. | when item is somewhere in the middle of the array |

B. | when item is not in the array at all |

C. | when item is the last element in the array |

D. | when item is the last element in the array or is not there at all |

Answer» A. when item is somewhere in the middle of the array |

13. |
## Which of the following case does not exist in complexity theory |

A. | best case |

B. | worst case |

C. | average case |

D. | null case |

Answer» D. null case |

14. |
## The space factor when determining the efficiency of algorithm is measured by |

A. | counting the maximum memory needed by the algorithm |

B. | counting the minimum memory needed by the algorithm |

C. | counting the average memory needed by the algorithm |

D. | counting the maximum disk space needed by the algorithm |

Answer» A. counting the maximum memory needed by the algorithm |

15. |
## The time factor when determining the efficiency of algorithm is measured by |

A. | counting microseconds |

B. | counting the number of key operations |

C. | counting the number of statements |

D. | counting the kilobytes of algorithm |

Answer» B. counting the number of key operations |

16. |
## Two main measures for the efficiency of an algorithm are |

A. | processor and memory |

B. | complexity and capacity |

C. | time and space |

D. | data and space |

Answer» C. time and space |

17. |
## Computers are used for processing numerical data called _______ data. |

A. | float |

B. | local |

C. | character |

D. | non-local |

Answer» C. character |

18. |
## Each programming language contains a ______ set that is used to communicate with the computer. |

A. | character |

B. | integer |

C. | float |

D. | numeric |

Answer» A. character |

19. |
## Finite sequence S of zero or more characters is called _______. |

A. | array |

B. | list |

C. | string |

D. | block |

Answer» C. string |

20. |
## String with zero characters is called ________ string. |

A. | null |

B. | binary |

C. | totalled |

D. | list |

Answer» A. null |

21. |
## A computer which can access an individual byte is called a ________ machine. |

A. | memory addressable |

B. | byte addressable |

C. | bit |

D. | byte |

Answer» B. byte addressable |

22. |
## Groups of consecutive elements in a string, such as words, phrases and sentences are called ________. |

A. | main strings |

B. | substring |

C. | index |

D. | block |

Answer» B. substring |

23. |
## The number of characters in a string is called its ______. |

A. | length |

B. | breath |

C. | width |

D. | none |

Answer» C. width |

24. |
## _________ operation of word processing involves replacing one string in the text by another. |

A. | insertion |

B. | deletion |

C. | searching |

D. | replacement |

Answer» D. replacement |

25. |
## ________ is the problem of deciding whether or not a given String pattern P appears in a text T. |

A. | pattern matching |

B. | searching |

C. | sorting |

D. | deletion |

Answer» A. pattern matching |

26. |
## ________ is a linearly ordered sequence of memory cells. |

A. | node |

B. | link |

C. | variable |

D. | null |

Answer» A. node |

27. |
## Each node in a linear list contains an item called _______ which points to the next node in the list. |

A. | node |

B. | link |

C. | variable |

D. | null |

Answer» B. link |

28. |
## _______ is a variable whose length may vary during the execution, but the length cannot exceed a maximum values defined before the program is executed. |

A. | dynamic |

B. | static |

C. | semi static |

D. | global |

Answer» C. semi static |

29. |
## In _______ storage, each cell is divided into two parts---- the path stores a single character, while the second part contains the address of the cell containing the next character. |

A. | fixed length |

B. | linked list |

C. | variable length |

D. | sequential |

Answer» B. linked list |

30. |
## If string 1 = John, and string 2 = Rivers are merged, the process is called ---- |

A. | insertion |

B. | deletion |

C. | concatenation |

D. | replacement |

Answer» C. concatenation |

31. |
## _____ is a variable whose length may vary during the execution of a program. |

A. | dynamic |

B. | static |

C. | semi static |

D. | global |

Answer» A. dynamic |

32. |
## _______ is a structure used to represent the linear relationship between elements by means of sequential memory locations. |

A. | linked list |

B. | array |

C. | pointer |

D. | stack |

Answer» B. array |

33. |
## A ______ is a list of a finite number of homogeneous data elements. |

A. | linear array |

B. | pointer |

C. | linked list |

D. | tree |

Answer» A. linear array |

34. |
## The number of elements n is called the length or _____ of the array. |

A. | upper bound |

B. | lower bound |

C. | size |

D. | variable |

Answer» C. size |

35. |
## The number K in A[K] is called the subscript or the ________. |

A. | size |

B. | index |

C. | variable |

D. | constant |

Answer» B. index |

36. |
## Which of the following items are not part of the array declaration? |

A. | name of the array |

B. | data type of the array |

C. | index set of the array |

D. | length of the array |

Answer» D. length of the array |

37. |
## Programming languages like FORTRAN and PASCAL allocate memory space for arrays ______. |

A. | dynamically |

B. | statically |

C. | successively |

D. | alternatively |

Answer» B. statically |

38. |
## The process of accessing and processing each element of an array A, exactly once is called _______. |

A. | deleting |

B. | inserting |

C. | traversing |

D. | searching |

Answer» C. traversing |

39. |
## _________ refers to the operations of rearranging the elements of an array A so that they are in increasing order. |

A. | searching |

B. | sorting |

C. | traversing |

D. | inserting |

Answer» B. sorting |

40. |
## Two dimensional arrays are sometimes called _______ arrays. |

A. | integer |

B. | boolean |

C. | matrix |

D. | real |

Answer» C. matrix |

41. |
## ________ is a list in which the order of the items is significant, and the items are not necessarily sorted. |

A. | ordered list |

B. | indexed list |

C. | sequential list |

D. | unordered list |

Answer» C. sequential list |

42. |
## Representation of a two dimensional as one single column of rows and mapping it sequentially is called _______ representation. |

A. | row-major |

B. | row |

C. | column-major |

D. | column |

Answer» A. row-major |

43. |
## Matrices with relatively high proportion of zero entries are called ______ matrices. |

A. | triangular |

B. | diagonal |

C. | sparse |

D. | adjacency |

Answer» C. sparse |

44. |
## _______ arrays are where the elements in the different arrays with the same subscript belongs to the same record. |

A. | one dimensional |

B. | parallel |

C. | two dimensional |

D. | static |

Answer» B. parallel |

45. |
## Records can be stored in an area of memory called _______ memory. |

A. | dynamic |

B. | static |

C. | simple |

D. | parallel |

Answer» A. dynamic |

46. |
## A matrix in which non-zero entries can only occur on the diagonal or on elements immediately above or below the diagonal, is called ______ matrix. |

A. | triangular |

B. | tridiagonal |

C. | sparse |

D. | simple |

Answer» C. sparse |

47. |
## Elements of of an arrays are accessed by |

A. | accessing fuction in built in data structure |

B. | mathematical fuction |

C. | index |

D. | none of the above |

Answer» C. index |

48. |
## Array is a |

A. | index data structure |

B. | non liturenear data structure |

C. | complx data structure |

D. | none of the above |

Answer» D. none of the above |

49. |
## Row -major order in two -dimentional array refers to an arrangement where |

A. | all elements of a row are stored in memory in sequence followed by next row in sequence,and so on |

B. | all elements of row are stored in memory in sequence followed by next column in sequence ,and so on |

C. | all elements of row are stored in memory in sequence followed by next column in sequence |

D. | none of the above |

Answer» A. all elements of a row are stored in memory in sequence followed by next row in sequence,and so on |

50. |
## Array is |

A. | data in physical order |

B. | data in logical order |

C. | both a& b |

D. | none of the above |

Answer» A. data in physical order |

51. |
## how many vlue can held by an array A(-1…m,1…m)? |

A. | m |

B. | m^2 |

C. | m(m+1) |

D. | m(m+2) |

Answer» D. m(m+2) |

52. |
## let x be the adjacency matrix of a graph .G with no self loop.The entries along the principle diagonal of x are |

A. | all "0" |

B. | all "1" |

C. | both 0&1 |

D. | different |

Answer» A. all "0" |

53. |
## _______ refers to the operation of finding the location of a given item in a collection of items. |

A. | sorting |

B. | searching |

C. | function |

D. | complexity |

Answer» B. searching |

54. |
## _______ is a field whose values uniquely determine the records in the file. |

A. | pointer |

B. | primary key |

C. | secondary key |

D. | function |

Answer» B. primary key |

55. |
## By using which of the following methods sorting is not possible? |

A. | insertion |

B. | exchange |

C. | selection |

D. | deletion |

Answer» D. deletion |

56. |
## Which is the simplest file structure? |

A. | sequential |

B. | indexed |

C. | random |

D. | bubble |

Answer» A. sequential |

57. |
## A ______ is a data structure use foe a storage of a records. |

A. | tree |

B. | hash table |

C. | stack |

D. | graph |

Answer» B. hash table |

58. |
## _________ is a search for data that uses an index to locate the item. |

A. | binary search |

B. | sequential search |

C. | indexed search |

D. | jump search |

Answer» C. indexed search |

59. |
## If the input array is unsorted, then only a linear ______ can be used. |

A. | binary search |

B. | sequential search |

C. | indexed search |

D. | jump search |

Answer» B. sequential search |

60. |
## _______ is a attribute of a sort, indicating that data with equal keys maintain their relative input order in the output. |

A. | sort order |

B. | sort stability |

C. | sort efficiency |

D. | collision |

Answer» B. sort stability |

61. |
## In ______ method of hashing, selected digit are extracted from the key and used as the address. |

A. | subtraction |

B. | digit extraction |

C. | rotation |

D. | folding |

Answer» B. digit extraction |

62. |
## ________ hashing method is used in combination with other methods. |

A. | subtraction |

B. | digit extraction |

C. | rotation |

D. | division |

Answer» C. rotation |

63. |
## If two different keys yield the same hash address, it is called _______ . |

A. | binary search |

B. | sequential search |

C. | collision |

D. | rotation |

Answer» C. collision |

64. |
## The ______ sort algorithm is called diminishing increment sort. |

A. | merge |

B. | radix |

C. | shell |

D. | selection |

Answer» C. shell |

65. |
## A ______ merge sort uses a constant number of input merge files and the same number of output merge files. |

A. | k-way |

B. | balanced |

C. | polyphase |

D. | radix |

Answer» B. balanced |

66. |
## ________ method of collision resolution involves maintaining two tables in memory. |

A. | linear probing |

B. | chaining |

C. | quadratic probing |

D. | double hashing |

Answer» B. chaining |

67. |
## _______ is a merge sort that sorts a data stream using repeated merges. |

A. | balanced |

B. | polyphase |

C. | radix |

D. | k-way |

Answer» D. k-way |

68. |
## One of the statement is false |

A. | tree is an abstract data type |

B. | array is a linear data structure |

C. | typedef is derived data type |

D. | float is built in data type |

Answer» C. typedef is derived data type |

69. |
## Examples of sorting algorithms are |

A. | bubble sort |

B. | selection sort |

C. | insertion sort |

D. | (a),(b),and © |

Answer» D. (a),(b),and © |

70. |
## Give timing complexities of three sorting algorithms bubble sort,selection sort,insertion sort respectively. |

A. | 0(log n), 0(log n), o(log n) |

B. | o(n2), o(n2), o(n2) |

C. | o(n2), o(n log n), o(n log n) |

D. | o(n log n), o(n2), o(n log n) |

Answer» B. o(n2), o(n2), o(n2) |

71. |
## _____passes are required to sort n data using bubble sort. |

A. | n |

B. | n-1 |

C. | n+2 |

D. | n-2 |

Answer» B. n-1 |

72. |
## Best and the worst case timing complexities of insertion sort are_________. |

A. | o(n2), o(n2) |

B. | o(n log n), o(n2) |

C. | o(n), o(n2) |

D. | o(n), o(n3) |

Answer» C. o(n), o(n2) |

73. |
## Which sorting algorithm can exploit the partially sorted data in a list? |

A. | bubble sort |

B. | selection sort |

C. | insertion sort |

D. | all of them |

Answer» C. insertion sort |

74. |
## Sorting is useful for_________ |

A. | report genration |

B. | minimizing the storage needed |

C. | making searching easier and efficient |

D. | responding to queries easily |

Answer» C. making searching easier and efficient |

75. |
## The getch() library function returns___ |

A. | a character when any key is pressed |

B. | a character when enter is pressed |

C. | displays a character on the screen when any key is pressed |

D. | none of these |

Answer» A. a character when any key is pressed |

76. |
## The function islower(char)checks whether a character is in lower case or not.Therefore it should return______ |

A. | 0 or 1 |

B. | -1, 0 or 1 |

C. | a character |

D. | nothing |

Answer» A. 0 or 1 |

77. |
## A variable P is called pointer if__ |

A. | p contains the address of an element in data |

B. | p points to the address of first element in data |

C. | p can store only memory address |

D. | p contain the data and the address of data |

Answer» A. p contains the address of an element in data |

78. |
## Which of the following data structure can't store the non-homogeneous data element? |

A. | arrays |

B. | records |

C. | pointers |

D. | none |

Answer» A. arrays |

79. |
## The difference between linear array and a record is_____ |

A. | an array is suitable for homogeneous data but the data items in a record may have different data type |

B. | in a record,theremay not be a natural ordering in opposed ti linear array |

C. | a record form a hierarchical structure but a linear array does not |

D. | all of above |

Answer» D. all of above |

80. |
## If s1 is "ABC" and s2 is "DEF" then strcat(s1,s2)will give the following result. |

A. | s1="abcdef" and s2="def" |

B. | s1="abcdef" and s2="def" |

C. | s1="abc" and s2="abcdef" |

D. | s1="abc" and s2="abcdef" |

Answer» A. s1="abcdef" and s2="def" |

81. |
## Give output of the following programint main(){inta[]={2,3,4,5,6};printf("%d",2[a]);} |

A. | compilation error |

B. | run time error |

C. | 4 |

D. | 2 |

Answer» C. 4 |

82. |
## Where do we use the operator --> ? |

A. | to access a member of structure |

B. | to access member of union |

C. | to access an array |

D. | both(a) and(b). |

Answer» D. both(a) and(b). |

83. |
## The function strcmp(s1,s2)will return -1 if____ |

A. | s1>s2 |

B. | s1=s2 |

C. | s1<s2 |

D. | function does not return -1. |

Answer» C. s1<s2 |

84. |
## Which of the following data structure store the homogeneous data elements? |

A. | arrays |

B. | records |

C. | pointers |

D. | none |

Answer» B. records |

85. |
## The number of comparisons required to sort 5 numbers in ascending order using bubble sort are |

A. | 7 |

B. | 6 |

C. | 10 |

D. | 5 |

Answer» C. 10 |

86. |
## A sorting algorithm is stable if |

A. | its time complexity is constant irrespective of the nature of input |

B. | preserves the original order of records with equal keys |

C. | its space complexity is constant irrespective of the nature of input |

D. | it sorts any volume of data in a constant time |

Answer» B. preserves the original order of records with equal keys |

87. |
## The average case complexity of Insertion Sort is |

A. | o(2n) |

B. | o(n3) |

C. | o(n2) |

D. | o(2n) |

Answer» C. o(n2) |

88. |
## A sorted file contains 16 items. Using binary search, the maximum number of comparisons to search for an item in this file is |

A. | 15 |

B. | 8 |

C. | 1 |

D. | 4 |

Answer» D. 4 |

89. |
## A sort which compares adjacent elements in a list and switches where necessary is |

A. | insertion sort |

B. | heap sort |

C. | quick sort |

D. | bubble sort |

Answer» D. bubble sort |

90. |
## A sort which iteratively passes through a list to exchange the first element with any element less than it and then repeats with a new first element is called |

A. | insertion sort |

B. | selection sort |

C. | heap sort |

D. | quick sort |

Answer» B. selection sort |

91. |
## The number of swappings needed to sort the numbers 8, 22, 7, 9, 31, 19, 5, 13 in ascending order, using bubble sort is |

A. | 11 |

B. | 12 |

C. | 13 |

D. | 14 |

Answer» D. 14 |

92. |
## A sorting technique that guarantees that records with the same primary key occurs in the same order in the sorted list as in the original unsorted list is said to be |

A. | stable |

B. | consistent |

C. | external |

D. | linear |

Answer» A. stable |

93. |
## You want to check whether a given set of items is sorted. Which of the following sorting methods will be most efficient if it is already in sorted order? |

A. | bubble sort |

B. | selection sort |

C. | insertion sort |

D. | merge sort |

Answer» C. insertion sort |

94. |
## Which of the following sorting methods will be the best if number of swappings done, is the only measure of efficienty? |

A. | bubble sort |

B. | selection sort |

C. | insertion sort |

D. | merge sort |

Answer» B. selection sort |

95. |
## You are asked to sort 15 randomly generated numbers. You should prefer |

A. | bubble sort |

B. | selection sort |

C. | insertion sort |

D. | merge sort |

Answer» A. bubble sort |

96. |
## What is the number of swaps required to sort n elements using selection sort, in the worst case? |

A. | Θ(n) |

B. | Θ(n log n) |

C. | Θ(n2) |

D. | Θ(n2 log n) |

Answer» A. Θ(n) |

97. |
## The number of interchanges required to sort 5, 1, 6, 2 4 in ascending order using Bubble Sort is |

A. | 6 |

B. | 5 |

C. | 7 |

D. | 8 |

Answer» B. 5 |

98. |
## The smallest element of an array’s index is called its |

A. | lower bound |

B. | upper bound |

C. | range |

D. | extraction |

Answer» A. lower bound |

99. |
## Which of the following sorting methods would be most suitable for sorting a list which is almost sorted |

A. | bubble sort |

B. | selection sort |

C. | insertion sort |

D. | merge sort |

Answer» A. bubble sort |

100. |
## The complexity of Bubble sort algorithm is |

A. | o(n) |

B. | o(log n) |

C. | o(n2) |

D. | o(n log n) |

Answer» C. o(n2) |

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