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Quiz on D, created by Dina Kim on 23/05/2017.
Dina Kim
Quiz by Dina Kim, updated more than 1 year ago
Dina Kim
Created by Dina Kim over 7 years ago
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Resource summary

Question 1

Question
Naming convention for variable is followed in company because ____.
Answer
  • A. it enhances readability
  • B. it allows to work without conflicts
  • C. it enhances the efficiency
  • D. all of the above

Question 2

Question
The true and false values represent ____.
Answer
  • A. logical data
  • B. numeric data
  • C. character data
  • D. alphanumeric data

Question 3

Question
Following operator distinguishes equation from expression
Answer
  • A. +, -, *, /
  • B. < or >
  • C. Logical operators
  • D. Assignment Operator

Question 4

Question
Following are called logical operators
Answer
  • A. +, -, *, /
  • B. <, >, <=, >=
  • C. AND, OR, NOT
  • D. \, MOD

Question 5

Question
Evaluate 5*(x+y)-4*y/(z+6) where x = 2, y = 3, and z = 6
Answer
  • A. 1
  • B. 24
  • C. 5
  • D. 10

Question 6

Question
Evaluate a-2>b where a=6, b = 8
Answer
  • A. False
  • B. True
  • C. 6
  • D. 7

Question 7

Question
Evaluate for a = 5, b = 4, c = 3, d = 12 for the equation E = a*b+d/c
Answer
  • A. 40
  • B. 24
  • C. 10
  • D. 10.66

Question 8

Question
Evaluate for the equation e = 5*a\d*(b+1) where a = 5, b = 4, c = 3, d = 12
Answer
  • A. 10
  • B. 24
  • C. 0
  • D. 10

Question 9

Question
The most important reason for including a destructor in a class is:
Answer
  • A. To print a message for debugging purposes
  • B. To store information about an object before it goes out of scope
  • C. To free up resources allocated by that class
  • D. To reset the original object's pointer to NULL
  • E. To make your TA happy

Question 10

Question
Which of the following name does not relate to stacks?
Answer
  • A. FIFO lists
  • B. LIFO list
  • C. Piles
  • D. Push-down lists

Question 11

Question
Which of the following data structure is linear type?
Answer
  • A. Strings
  • B. Lists
  • C. Queues
  • D. All of above

Question 12

Question
An algorithm that calls itself directly or indirectly is known as
Answer
  • A. Sub algorithm
  • B. Recursion
  • C. Polish notation
  • D. Traversal algorithm

Question 13

Question
The help menus or user manuals are the part of ____.
Answer
  • A. Program
  • B. Algorithm
  • C. Internal Documentation
  • D. External Documentation

Question 14

Question
The correctness and appropriateness of ___ solution can be checked very easily.
Answer
  • A. algorithmic solution
  • B. heuristic solution
  • C. random solution
  • D. none of these

Question 15

Question
Memorization is
Answer
  • A. To store previous results for future use
  • B. To avoid this unnecessary repetitions by writing down the results of recursive calls and looking them up again if we need them later
  • C. To make the process accurate
  • D. None of the above

Question 16

Question
The time complexity of linear search is _____.
Answer
  • A. O(1)
  • B. O(log(n))
  • C. O(n)
  • D. O(n log(n))

Question 17

Question
The time complexity of binary search is _____.
Answer
  • A. O(1)
  • B. O(log(n))
  • C. O(n)
  • D. O(n log(n))

Question 18

Question
What is the asymptotic runtime for traversing all nodes in a binary search tree with n nodes and printing them in order?
Answer
  • A. O(n log(n))
  • B. O(n)
  • D. O(log(n))
  • E. O(n^2)

Question 19

Question
The number of nodes in a complete binary tree of height h is
Answer
  • A. 2^(h+1) - 1
  • B. 2*(h+1) - 1
  • C. 2*(h+1)
  • D. (h+1)^2 - 1

Question 20

Question
Divide-and-conquer as breaking the problem into a small number of
Answer
  • A. Pivot
  • B. Sieve
  • C. Smaller sub problems
  • D. Selection

Question 21

Question
The sub problems in Divide and Conquer are considered to be
Answer
  • A. Distinct
  • B. Overlapping
  • C. Large size
  • D. Small size

Question 22

Question
For the sieve technique we solve the problem,
Answer
  • A. recursively
  • B. mathematically
  • C. precisely
  • D. accurately

Question 23

Question
The sieve technique works in ____ as follows
Answer
  • A. phases
  • B. numbers
  • C. integers
  • D. routines

Question 24

Question
The sieve technique is a special case, where the number of sub problems is just
Answer
  • A. 5
  • B. many
  • C. 1
  • D. few

Question 25

Question
The reason for introducing Sieve Technique algorithm is that it illustrates a very important special case of,
Answer
  • A. divide-and-conquer
  • B. decrease and conquer
  • C. greedy nature
  • D. 2-dimension Maxima

Question 26

Question
Sieve Technique applies to problems where we are interested in finding a single item from a larger set of ____
Answer
  • A. n items
  • B. phases
  • C. pointers
  • D. constant

Question 27

Question
In Sieve Technique we do not know which item is of interest
Answer
  • True
  • False

Question 28

Question
For the Sieve Technique we take time
Answer
  • A. T(nk)
  • B. T(n / 3)
  • C. n^2
  • D. n/3

Question 29

Question
How many passes are required to sort a file of size n by bubble sort method?
Answer
  • A. N2
  • B. N
  • C. N-1
  • D. N/2

Question 30

Question
The worst-case time complexity of Bubble Sort is ____.
Answer
  • A. O(n2)
  • B. O(log n)
  • C. O(n)
  • D. O(n log(n))

Question 31

Question
Which of the following sorting procedures is the slowest?
Answer
  • A. Quick sort
  • B. Heap sort
  • C. Shell sort
  • D. Bubble sort

Question 32

Question
For i = 1 to n-1 do --> For j = 1 to n-1-i do --> If (a[j+1] < a[j]) then swap a[j] and a[j+1]. Given code is for
Answer
  • A. Bubble sort
  • B. Insertion sort
  • C. Quick Sort
  • D. Selection Sort

Question 33

Question
How many number of comparisons are required in insertion sort to sort a file if the file is sorted in reverse order?
Answer
  • A. N2
  • B. N
  • C. N-1
  • D. N/2

Question 34

Question
How many number of comparisons are required in insertion sort to sort a file if the file is already sorted?
Answer
  • A. N2
  • B. N
  • C. N-1
  • D. N/2

Question 35

Question
Which of the following sorting methods would be most suitable for sorting a list which is almost sorted?
Answer
  • A. Bubble Sort
  • B. Insertion Sort
  • C. Selection Sort
  • D. Quick Sort

Question 36

Question
!!! Suppose we are sorting an array of eight integers using some quadratic sorting algorithm. After four iterations of the algorithm's main loop, the array elements are ordered as shown here: 2 4 5 7 8 1 3 6
Answer
  • A. Insertion sort
  • B. Selection sort
  • C. Either of a and b
  • D. None of the above

Question 37

Question
The running time of insertion sort is
Answer
  • A. O(n^2)
  • B. O(n)
  • C. O(log(n))
  • D. O(n log(n))

Question 38

Question
A sort which compares adjacent elements in a list and switches where necessary is ____.
Answer
  • A. insertion sort
  • B. heap sort
  • C. quick sort
  • D. bubble sort

Question 39

Question
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
Answer
  • A. insertion sort
  • B. selection sort
  • C. heap sort
  • D. quick sort

Question 40

Question
The way a card game player arranges his cards as he picks them one by one can be compared to
Answer
  • A. Quick sort
  • B. Merge sort
  • C. Insertion sort
  • D. Bubble sort

Question 41

Question
Which among the following is the best when the list is already sorted?
Answer
  • A. Insertion sort
  • B. Bubble sort
  • C. Merge sort
  • D. Selection sort

Question 42

Question
As part of the maintenance work, you are entrusted with the work of rearranging the library books in a shelf in proper order, at the end of each day. The ideal choice will be
Answer
  • A. Bubble sort
  • B. Insertion sort
  • C. Selection sort
  • D. Merge sort

Question 43

Question
When is insertion sort a good choice for sorting an array?
Answer
  • A. Each component of the array requires a large amount of memory.
  • B. The processor speed is fast.
  • C. Each component of the array requires a small amount of memory.
  • D. The array has only a few items out of place.

Question 44

Question
Suppose we are sorting an array of ten integers using a some quadratic sorting algorithm. After four iterations of the algorithm's main loop, the array elements are ordered as shown here: 1 2 3 4 5 0 6 7 8 9. Which statement is correct? (Note: Our selection sort picks largest items first)
Answer
  • A. The algorithm might be either selection sort or insertion sort.
  • B. The algorithm is neither selection sort nor insertion sort.
  • C. The algorithm might be selection sort, but could not be insertion sort.
  • D. The algorithm might be insertion sort, but could not be selection sort.

Question 45

Question
A list of n strings, each of length n, is sorted into lexicographic order using the merge-sort algorithm. The worst case running time of this computation is
Answer
  • A. O (n log(n))
  • B. O (n^2 log(n))
  • C. O (n^2 + log(n))
  • D. O (n^2)

Question 46

Question
The worst-case time complexity of Merge Sort is ____.
Answer
  • A. O(n^2)
  • B. O(log n)
  • C. O(n)
  • D. O(n log(n))

Question 47

Question
Suppose we need to sort a list of employee records in ascending order, using the social security number (a 9-digit number) as the key (i.e., sort the records by social security number). If we need to guarantee that the running time will be no worse than n*log(n), which sorting methods could we use?
Answer
  • A. mergesort
  • B. quicksort
  • C. insertion sort
  • D. Either mergesort or quicksort
  • E. None of these sorting algorithms guarantee a worst-case performance of n log n or better

Question 48

Question
How much time merge sort takes for an array of numbers?
Answer
  • A. T(n^2)
  • B. T(n)
  • C. T(log n)
  • D. T(n log(n))

Question 49

Question
Merge sort makes two recursive calls. Which statement is true after these recursive calls finish, but before the merge step?
Answer
  • A. The array elements form a heap.
  • B. None of the above.
  • C. Elements in each half of the array are sorted amongst themselves.
  • D. Elements in the first half of the array are less than or equal to elements in the second half of the array.

Question 50

Question
What is the worst-case time for merge sort to sort an array of n elements?
Answer
  • A. O(n)
  • B. O(n log(n))
  • C. O(log(n))
  • D. O(n)

Question 51

Question
In quick sort, the number of partitions into which the file of size n is divided by a selected record is
Answer
  • A. n
  • B. n - 1
  • C. 2
  • D. n/2

Question 52

Question
The worst-case time complexity of Quick Sort is ____.
Answer
  • A. O(n^2)
  • B. O(log(n))
  • C. O(n)
  • D. O(n log(n))

Question 53

Question
The algorithm like Quick sort does not require extra memory for carrying out the sorting procedure. This technique is called ____.
Answer
  • A. in-place
  • B. stable
  • C. unstable
  • D. in-partition

Question 54

Question
In quick sort, the number of partitions into which the file of size n is divided by a selected record is
Answer
  • A. n
  • B. n - 1
  • C. 2
  • D. None of the above

Question 55

Question
The total number of comparisons made in quick sort for sorting a file of size n, is
Answer
  • A. O(n log(n))
  • B. O(n^2)
  • C. n(log(n))
  • D. None of the above

Question 56

Question
Quick sort efficiency can be improved by adopting
Answer
  • A. non-recursive method
  • B. insertion method
  • C. tree search method
  • D. None of the above

Question 57

Question
For the improvement of efficiency of quick sort the pivot can be
Answer
  • A. the first element
  • B. the mean element
  • C. the last element
  • D. None of the above

Question 58

Question
Quick sort is the fastest available method of sorting because of
Answer
  • A. low over head
  • B. O(n log(n)) comparisons
  • C. low overhead and also O(n log(n)) comparisons
  • D. None of the above

Question 59

Question
Quick sort is
Answer
  • A. Stable & in place
  • B. Not stable but in place
  • C. Stable but not in place
  • D. Some time stable & some times in place

Question 60

Question
One example of in place but not stable algorithm is
Answer
  • A. Merger Sort
  • B. Quick Sort
  • C. Continuation Sort
  • D. Bubble Sort

Question 61

Question
In Quick Sort Constants hidden in T(n log n) are
Answer
  • A. Large
  • B. Medium
  • C. Small
  • D. Not Known

Question 62

Question
The running time of quick sort depends heavily on the selection of
Answer
  • A. No of inputs
  • B. Arrangement of elements in array
  • C. Size o elements
  • D. Pivot elements

Question 63

Question
!!!!!! Here is an array which has just been partitioned by the first step of quick sort: 3, 0, 2, 1, 5, 4, 7, 9, 8. Which of these elements could be the pivot?
Answer
  • A. 2
  • B. 7
  • C. 0
  • D. 5

Question 64

Question
Quick sort is solved using
Answer
  • A. Divide and conquer
  • B. Greedy Programming
  • C. Dynamic Programming
  • D. Branch and bound

Question 65

Question
The worst-case time complexity of Selection Exchange Sort is ____.
Answer
  • A. O(n^2)
  • B. O(log n)
  • C. O(n)
  • D. O(n log(n))

Question 66

Question
Straight selection sort is basically a method of repeated
Answer
  • A. interchange
  • B. searching
  • C. position adjustment
  • D. None of the above

Question 67

Question
Number of selections required to sort a file of size N by straight selection requires
Answer
  • A. n-1
  • B. log(n)
  • C. O(n^2)
  • D. None of the above

Question 68

Question
For sorting a file of size n by straight selection sort, the number of comparisons made in the first pass is
Answer
  • A. n
  • B. n - 1
  • C. n(n - 1)/2
  • D. None of the above

Question 69

Question
"" In the analysis of Selection algorithm, we eliminate a constant fraction of the array with each phase; we get the convergent ____ series in the analysis
Answer
  • A. linear
  • B. arithmetic
  • C. geometric
  • D. exponent

Question 70

Question
?? In the analysis of Selection algorithm, we make a number of passes, in fact it could be as many as,
Answer
  • A. T(n)
  • B. T(n/2)
  • C. log n
  • D. n/2 + n/4

Question 71

Question
?? Analysis of Selection algorithm ends up with
Answer
  • A. T(n)
  • B. T(1/1 + n)
  • C. T(n/2)
  • D. T(n/2 + n)

Question 72

Question
The analysis of Selection algorithm shows the total running time is indeed ____ in n,
Answer
  • A. arithmetic
  • B. geometric
  • C. linear
  • D. orthogonal

Question 73

Question
How many elements do we eliminate in each time for the Analysis of Selection algorithm?
Answer
  • A. n/2 elements
  • B. n/2 + n elements
  • C. n/4 elements
  • D. 2n elements

Question 74

Question
In a selection sort of n elements, how many times is the swap function called in the complete execution of the algorithm?
Answer
  • A. 1
  • B. n-1
  • C. n log(n)
  • D. n^2

Question 75

Question
Selection sort and quick sort both fall into the same category of sorting algorithms. What is this category?
Answer
  • A. Interchange sorts
  • B. Average time is quadratic.
  • C. O(n log n) sorts
  • D. Divide-and-conquer sorts

Question 76

Question
Slow sorting algorithms run in
Answer
  • A. T(n^2)
  • B. T(n)
  • C. T(log(n))

Question 77

Question
A sort technique is said to be stable when the original relative order of records with equal keys are retained after sorting.
Answer
  • True
  • False

Question 78

Question
The three factors contributing to the sort efficiency considerations are the efficiency in coding, machine run time and the space requirement for running the procedure.
Answer
  • True
  • False

Question 79

Question
The correct order of the efficiency of the following sorting algorithms according to their overall running time comparison is
Answer
  • A. Insertion > Selection > Bubble
  • B. Insertion > Bubble > Selection
  • C. Selection > Bubble > Insertion
  • D. Bubble > Selection > Insertion

Question 80

Question
In which order we can sort?
Answer
  • A. increasing order only
  • B. decreasing order only
  • C. increasing order or decreasing order
  • D. both at the same time

Question 81

Question
Which sorting algorithm is faster
Answer
  • A. O(n log(n))
  • B. O(n^2)
  • C. O(n+k)
  • D. O(n^3)

Question 82

Question
Continuation sort is suitable to sort the elements in range 1 to k
Answer
  • A. K is Large
  • B. K is not known
  • C. K may be small or large
  • D. K is small

Question 83

Question
In stable sorting algorithm.
Answer
  • A. If duplicate elements remain in the same relative position after sorting
  • B. One array is used
  • C. More than one arrays are required
  • D. Duplicating elements not handled

Question 84

Question
Which may be a stable sort?
Answer
  • A. Merger
  • B. Insertion
  • C. Both above
  • D. None of the above

Question 85

Question
An in place sorting algorithm is one that uses ___ arrays for storage
Answer
  • A. Two dimensional arrays
  • B. More than one array
  • C. No Additional Array
  • D. None of the above

Question 86

Question
We do sorting to
Answer
  • A. keep elements in random positions
  • B. keep the algorithm run in linear order
  • C. keep the algorithm run in (log n) order
  • D. keep elements in increasing or decreasing order

Question 87

Question
Sorting is one of the few problems where provable ____ bonds exits on how fast we can sort
Answer
  • A. upper
  • B. lower
  • C. average
  • D. log n

Question 88

Question
In in-place sorting algorithm is one that uses arrays for storage
Answer
  • A. An additional array
  • B. No additioanal array
  • C. Both of above may be true according to algorithm
  • D. More than 3 arrays of one dimension

Question 89

Question
Which may be stable sort
Answer
  • A. Bubble sort
  • B. Insertion sort
  • C. Both of above
  • D. None of above

Question 90

Question
The operation of processing each element in the list is known as
Answer
  • A. sorting
  • B. merging
  • C. inserting
  • D. traversal

Question 91

Question
Other name for directed graph is
Answer
  • A. Direct graph
  • B. Digraph
  • C. Dir-graph

Question 92

Question
Binary trees with threads are called as
Answer
  • A. Threaded trees
  • B. Pointer trees
  • C. Special trees
  • D. Special pointer trees

Question 93

Question
Graph G is ____ if for any pair u, v of nodes in G there is a path from u to v or path from v to u.
Answer
  • A. Leterally connected
  • B. Widely Connected
  • C. Unliterally connected
  • D. Literally connected

Question 94

Question
In Binary trees nodes with no successor are called
Answer
  • A. End nodes
  • B. Terminal nodes
  • C. Final nodes
  • D. Last nodes

Question 95

Question
A connected graph T without any cycles is called
Answer
  • A. free graph
  • B. no cycle graph
  • C. non cycle graph
  • D. circular graph

Question 96

Question
Trees are said ____ if they are similar and have same contents at corresponding nodes.
Answer
  • A. Duplicate
  • B. Carbon copy
  • C. Replica
  • D. Copies

Question 97

Question
Every node N in a binary tree T except the root has a unique parent called the ____ of N.
Answer
  • A. Antecedents
  • B. Predecessor
  • C. Forerunner
  • D. Precursor

Question 98

Question
In a graph if E=(u,v) means
Answer
  • A. u is adjacent to v but v is not adjacent to u
  • B. e begins at u and ends at v
  • C. u is processor and v is successor
  • D. both b and c

Question 99

Question
Sequential representation of binary tree uses
Answer
  • A. Array with pointers
  • B. Single linear array
  • C. Two dimentional arrays
  • D. Three dimentional arrays

Question 100

Question
In a graph if e=[u,v], Then u and v are called
Answer
  • A. End points of e
  • B. Adjacent nodes
  • C. Neighbours
  • D. All of the above

Question 101

Question
TREE[1]=NULL indicates tree is
Answer
  • A. Overflow
  • B. Underflow
  • C. Empty
  • D. Full

Question 102

Question
A binary tree whose every node has either zero or two children is called
Answer
  • A. complete binary tree
  • B. binary search tree
  • C. extended binary tree
  • D. data structure

Question 103

Question
Linked representation of binary tree needs ____ parallel arrays.
Answer
  • A. 4
  • B. 2
  • C. 3
  • D. 5

Question 104

Question
The depth of complete binary tree is given by
Answer
  • A. D(n) = n log(n)
  • B. D(n) = n log(n)+1
  • C. D(n) = log(n)
  • D. D(n) = log(n)+1

Question 105

Question
In a 2-tree, nodes with 0 children are called
Answer
  • A. Exterior node
  • B. Outside node
  • C. Outer node
  • D. External node

Question 106

Question
Which indicates pre-order traversal?
Answer
  • A. Left sub-tree, Right sub-tree and root
  • B. Right sub-tree, Left sub-tree and root
  • C. Root, Left sub-tree, Right sub-tree
  • D. Right sub-tree, root, Left sub-tree

Question 107

Question
In a extended-binary tree nodes with 2 children are called
Answer
  • A. Interior node
  • B. Domestic node
  • C. Internal node
  • D. Inner node

Question 108

Question
A terminal node in a binary tree is called
Answer
  • A. Root
  • B. Leaf
  • C. Child
  • D. Branch

Question 109

Question
The post order traversal of binary tree is DEBFCA. Find out the pre order traversal.
Answer
  • A. ABFCDE
  • B. ADBFEC
  • C. ABDECF
  • D. ABDCEF

Question 110

Question
While converting binary tree into extended binary tree, all the original nodes in binary tree are
Answer
  • A. Internal nodes on extended tree
  • B. External nodes on extended tree
  • C. Vanished on extended tree
  • D. Intermediate nodes on extended tree

Question 111

Question
The in-order traversal of tree will yield a sorted listing of elements of tree in
Answer
  • A. binary trees
  • B. binary search trees
  • C. heaps
  • D. binary heaps

Question 112

Question
In a binary tree, certain null entries are replaced by special pointers which point to nodes higher in the tree for efficiency. These special pointers are called
Answer
  • A. Leaf
  • B. Branch
  • C. Path
  • D. Thread

Question 113

Question
In a head tree
Answer
  • A. values in a node is greater than every value every value in left sub tree and smaller than right sub tree.
  • B. values in a node is greater than every value in children of it.
  • C. conditions.
  • D. terms.

Question 114

Question
The in order traversal of tree will yield a sorted listing of elements of tree in
Answer
  • A. Binary trees
  • B. Binary search trees
  • C. Merging
  • D. AVL Trees

Question 115

Question
In a graph if e=(u,v) means
Answer
  • A. u is adjacent to v but v is not adjacent to u.
  • B. e begins at u and ends at v
  • C. u is node and v is an edge.
  • D. both u and v are edges.

Question 116

Question
A binary tree whose every node has either zero or two children is called
Answer
  • A. Complete binary tree
  • B. Binary Search tree
  • C. Extended binary tree
  • D. E2 tree

Question 117

Question
If every node u in G is adjacent to every other node v in G,A graph is said to be
Answer
  • A. isolated
  • B. complete
  • C. finite
  • D. strongly connected

Question 118

Question
The post order traversal of a binary tree is DEBFCA. Find out the pre order Traversal.
Answer
  • A. ABFCDE
  • B. ADBFEC
  • C. ABDECF
  • D. ABDCEF

Question 119

Question
In a graph if e=[u,v], then u and v are called
Answer
  • A. endpoints of e
  • B. adjacent nodes
  • C. neighbours
  • D. all of the above

Question 120

Question
In-order traversing a tree resulted E A C K F H D B G; the pre-order traversal would return.
Answer
  • A. FAEKCDBHG
  • B. FAEKCDHGB
  • C. EAFKHDCBG
  • D. FEAKDCHBG

Question 121

Question
In linked representation of Binary trees LEFT[k] contains the ____ of at the node N, where k is the location.
Answer
  • A. Data
  • B. Location and left child
  • C. Right child address
  • D. Null value

Question 122

Question
If every node u in G adjacent to every other node v in G, A graph is said to be
Answer
  • A. isolated
  • B. complete
  • C. finite
  • D. strongly connected

Question 123

Question
Three standards ways of traversing a binary tree T with root R
Answer
  • A. Prefix, infix, postfix
  • B. Pre-process, in-process, post-process
  • C. Pre-traversal, in-traversal, post-traversal
  • D. Pre-order, in-order, post-order

Question 124

Question
A graph is said to be ____ if every node u in G is adjacent to every other node v in G.
Answer
  • A. Absolute
  • B. Entire
  • C. Inclusive
  • D. Complete

Question 125

Question
In threaded binary tree ____ points to higher nodes in tree.
Answer
  • A. Info
  • B. Root
  • C. Threads
  • D. Child

Question 126

Question
A graph is said to be ____ if its edges are assigned data.
Answer
  • A. Tagged
  • B. Marked
  • C. Weighted
  • D. Sticked

Question 127

Question
If node N is a terminal node in a binary tree then its
Answer
  • A. Right tree is empty
  • B. Left tree is empty
  • C. Both left & right sub trees are empty
  • D. Root node is empty

Question 128

Question
A directed graph is ____ if there is a path from each vertex to every other vertex in the digraph.
Answer
  • A. Weakly connected
  • B. Strongly Connected
  • C. Tightly Connected
  • D. Linearly Connected

Question 129

Question
In the ____ traversal we process all of a vertex's descendants before we move to an adjacent vertex.
Answer
  • A. Depth First
  • B. Breadth First
  • C. With First
  • D. Depth Limited

Question 130

Question
State True of False. (I) Network is a graph that has weights or costs associated with it. (II) An undirected graph which contains no cycles is called a forest. (III) A graph is said to be complete if there is no edge between every pair of vertices.
Answer
  • A. True, False, True
  • B. True, True, False
  • C. True, True, True
  • D. False, True, True

Question 131

Question
The number of comparisons done by sequential search is
Answer
  • A. (N/2)+1
  • B. (N+1)/2
  • C. (N-1)/2
  • D. (N+2)/2

Question 132

Question
In ____, search start at the beginning of the list and check every element in the list.
Answer
  • A. Linear search
  • B. Binary search
  • C. Hash Search
  • D. Binary Tree search

Question 133

Question
State True or False. (I) Binary search is used for searching in a sorted array. (II) The time complexity of binary search is O(logn).
Answer
  • A. True, False
  • B. False, True
  • C. False, False
  • D. True, True

Question 134

Question
Which of the following is not the internal sort?
Answer
  • A. Insertion Sort
  • B. Bubble Sort
  • C. Merge Sort
  • D. Heap Sort

Question 135

Question
State True or False. (I) An undirected graph which contains no cycles is called forest. (II) A graph is said to be complete if there is an edge between every pair of vertices.
Answer
  • A. True, True
  • B. False, True
  • C. False, False
  • D. True, False

Question 136

Question
A graph is said to be ____ if the vertices can be split into two sets V1 and V2 such there are no edges between two vertices of V1 or two vertices of V2.
Answer
  • A. Partite
  • B. Bipartite
  • C. Rooted
  • D. Bisects

Question 137

Question
In a queue, the initial values of front pointer f rare pointer r should be ____ and ____ respectively.
Answer
  • A. 0 and 1
  • B. 0 and -1
  • C. -1 and 0
  • D. 1 and 0

Question 138

Question
In a circular queue the value of r will be
Answer
  • A. r=r+1
  • B. r=(r+1)% [QUEUE_SIZE - 1]
  • C. r=(r+1)% QUEUE_SIZE
  • D. r=(r-1)% QUEUE_SIZE

Question 139

Question
Which of the following statement is true? (I) Using singly linked lists and circular list, it is not possible to traverse the list backwards. (II) To find the predecessor, it is required to traverse the list from the first node in case of singly linked list.
Answer
  • A. I-only
  • B. II-only
  • C. Both I and II
  • D. None of both

Question 140

Question
The advantage of ____ is that they solve the problem if sequential storage representation. But disadvantage in that is they are sequential lists.
Answer
  • A. Lists
  • B. Linked Lists
  • C. Trees
  • D. Queues

Question 141

Question
What will be the value of top, if there is a size of stack STACK_SIZE is 5
Answer
  • A. 5
  • B. 6
  • C. 4
  • D. None

Question 142

Question
____ is not the operation that can be performed on queue.
Answer
  • A. Insertion
  • B. Deletion
  • C. Retrieval
  • D. Traversal

Question 143

Question
There is an extra element at the head of the list called a
Answer
  • A. Antinel
  • B. Sentinel
  • C. List header
  • D. List head

Question 144

Question
A graph is a collection of nodes, called ____ And line segments called arcs or ____ that connect pair of nodes.
Answer
  • A. vertices, edges
  • B. edges, vertices
  • C. vertices, paths
  • D. graph node, edges

Question 145

Question
A ____ is a graph that has weights of costs associated with its edges.
Answer
  • A. Network
  • B. Weighted graph
  • C. Both A and B
  • D. None A and B

Question 146

Question
In general, the binary search method needs no more than ____ comparisons.
Answer
  • A. [log2n]-1
  • B. [logn]+1
  • C. [log2n]
  • D. [log2n]+1

Question 147

Question
In depth first search algorithm the number of recursive calls we have to make are
Answer
  • A. 2
  • B. 1
  • C. 6
  • D. depends on the graph

Question 148

Question
In a graph if e=(u,v) means
Answer
  • A. u is adjacent to v but v is not adjacent to u
  • B. e begins at u and ends at v
  • C. u is processor and v is successor
  • D. both b and c

Question 149

Question
Heap is defined to be a
Answer
  • A. complete binary tree
  • B. binary tree
  • C. tree structure
  • D. None of the above

Question 150

Question
In a Max heap the largest key is at
Answer
  • A. the root
  • B. a leaf
  • C. a node
  • D. None of the above

Question 151

Question
In heap sort the input is arranged in the form of a
Answer
  • A. heap
  • B. tree
  • C. queue
  • D. None of the above

Question 152

Question
Heap sort is found to be very efficient
Answer
  • A. with regard to storage requirement
  • B. in time consumption
  • C. regarding overheads involved
  • D. None of the above

Question 153

Question
For the heap sort, access to nodes involves simple ____ operations
Answer
  • A. arithmetic
  • B. binary
  • C. algebraic
  • D. logarithmic

Question 154

Question
A (an) ____ is a left-complete binary tree that conforms to the heap order
Answer
  • A. heap
  • B. binary tree
  • C. binary search tree
  • D. array

Question 155

Question
For the heap sort we store the tree nodes in
Answer
  • A. level-order traversal
  • B. in-order traversal
  • C. pre-order traversal
  • D. post-order traversal

Question 156

Question
One of the clever aspects of heaps is that they can be stored in arrays without using any ____.
Answer
  • A. pointers
  • B. constants
  • C. variables
  • D. functions

Question 157

Question
Assuming that the hash function for a table works well, and the size of the hash table is reasonably large compared to the number of items in the table, the expected (average) time needed to find an item in a hash table containing n items is
Answer
  • A. O(1)
  • B. O(log(n))
  • C. O(n log(n))
  • D. O(n)

Question 158

Question
The six-step solution for the problem can be applied to problems (I) with Algorithmic solution or (II) with Heuristic solution
Answer
  • A. Only I
  • B. Only II
  • C. Both I and II
  • D. Neither I nor II

Question 159

Question
____ solution requires reasoning built on knowledge and experience
Answer
  • A. Algorithmic Solution
  • B. Heuristic Solution
  • C. Random Solution
  • D. None of these

Question 160

Question
The branch of computer that deals with heuristic types of problem is called ____.
Answer
  • A. system software
  • B. real time software
  • C. artificial intelligence
  • D. none of these

Question 161

Question
___ is the first step in solving the problem
Answer
  • A. Understanding the Problem
  • B. Identify the Problem
  • C. Evaluate the Solution
  • D. None of these

Question 162

Question
___ is the last step in solving the problem
Answer
  • A. Understanding the Problem
  • B. Identify the Problem
  • C. Evaluate the Solution
  • D. None of these

Question 163

Question
Following is true for understanding of a problem
Answer
  • A. Knowing the knowledgebase
  • B. Understanding the subject on which the problem is based
  • C. Communication with the client
  • D. All of the above

Question 164

Question
While solving the problem with computer the most difficult step is ____.
Answer
  • A. describing the problem
  • B. finding out the cost of the software
  • C. writing the computer instructions
  • D. testing the solution

Question 165

Question
The main measure for efficiency algorithm are ____.
Answer
  • A. Processor and Memory
  • B. Size and Capacity
  • C. Data and Space
  • D. Time and Space

Question 166

Question
What does the algorithmic analysis count?
Answer
  • A. The number of arithmetic and the operations that are required to run the program
  • B. The number of lines required by the program
  • C. The number of seconds required by the program to execute
  • D. None of these

Question 167

Question
!!! Examples of O(1) algorithms are ____.
Answer
  • A. Multiplying two numbers
  • B. Assigning some value to a variable
  • C. Displaying some integer on console
  • D. All of the above

Question 168

Question
Examples of O(n^2) algorithms are ____.
Answer
  • A. Adding of two Matrices
  • B. Initializing all elements of matrix by zero
  • C. Both A and B
  • D. Neither A nor B

Question 169

Question
The complexity of three algorithms is given as: O(n), O(n^2) and O(n^3). Which should execute slowest for large value of n?
Answer
  • A. O(n)
  • B. O(n^2)
  • C. O(n^3)
  • D. All will execute in same time.

Question 170

Question
There are four algorithms A1, A2, A3, A4 to solve the given problem with the order log(n), nlog(n), log(log(n)), n/log(n). Which is the best algorithm?
Answer
  • A. A1: log(n)
  • B. A2: n log(n)
  • C. A3: log(log(n))
  • D. A4: n/log(n)

Question 171

Question
Express the formula (n-1)*(n-5) in terms of big-Oh notation
Answer
  • A. O(1)
  • B. O(log(n))
  • C. O(n)
  • D. O(n^2)

Question 172

Question
Which of the following case does not exist in complexity theory?
Answer
  • A. Best case
  • B. Worst case
  • C. Average case
  • D. Null case

Question 173

Question
The concept of order Big-Oh is important because
Answer
  • A. It can be used to decide the best algorithm that solves a given problem
  • B. It determines the maximum size of a problem that can be solved in a given amount of time
  • C. It is the lower bound of the growth rate of algorithm
  • D. Both A and B

Question 174

Question
The recurrence relation capturing the optimal execution time of the Towers of Hanoi problem with n discs is
Answer
  • A. T(n) = 2T(n - 2) + 2
  • B. T(n) = 2T(n - 1) + n
  • C. T(n) = 2T(n/2) + 1
  • D. T(n) = 2T(n - 1) + 1

Question 175

Question
The space factor when determining the efficiency of algorithm is measured by
Answer
  • 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

Question 176

Question
The time factor when determining the efficiency of algorithm is measured by
Answer
  • A. Counting microseconds
  • B. Counting the number of key operations
  • C. Counting the number of statements
  • D. Counting the kilobytes of algorithm

Question 177

Question
A large department store has its own charge card. The policy for a customer to charge an item is that the customer must have a valid charge card and either a balance of less than Rs.500 or a charge of less than Rs.50.
Answer
  • A. ChargeCard AND (Balance < 500 OR Amount < 50)
  • B. ChargeCard OR (Balance < 500 AND Amount < 50)
  • C. ChargeCard OR (Balance < 500 OR Amount < 50)
  • D. ChargeCard AND (Balance < 500 AND Amount < 50)

Question 178

Question
If Total complexity after analysis is (5n^3 + 10n^2 + 100n + 400log(n) + 10), the Big-Oh complexity is
Answer
  • A. O(n^2)
  • B. O(n^3)
  • C. O(n log(n))
  • D. O(n^2 log(n))

Question 179

Question
In Strassen's Multiplication Algorithm the T(n) is
Answer
  • A. 7T(n) + bn^2
  • B. 7T(n/2) + bn^2
  • C. 8T(n/2) + bn^2
  • D. 7T(n/2) + bn

Question 180

Question
T(n) = 4T(n/2) + n, then in Big Oh Notation it is
Answer
  • A. O (n2)
  • B. O(4)
  • C. O(n)
  • D. O(log(n))

Question 181

Question
In T(n) = a * T(n/b) + f(n), "a" refers to
Answer
  • A. Size of sub problem
  • B. Number of sub problems
  • C. Size of the problem
  • D. Time to combine solutions

Question 182

Question
O(f(n)) minus O(f(n)) is equal to
Answer
  • A. Zero
  • B. A constant
  • C. f(n)
  • D. O(f(n))
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