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In this page provide you Data Structure Multiple choice question SET-3 Which is very useful of Many Exam Like semester , ISRO, DRDO, Banking , Railway etc.
Data Structure
A data structure is a specialized format for organizing, processing, retrieving and storing data. There are several basic and advanced types of data structures, all designed to arrange data to suit a specific purpose. Data structures make it easy for users to access and work with the data they need in appropriate ways.
Q.41 Preorder is as same as:-
Depth-first order
Breadth-first order
Topological order
Liner order
Explanation
Preorder traversal is a specific type of Depth-First Search (DFS) where the root node is visited before its subtrees.
Q.42 Which of the following traversal techniques lists the nodes of binary search tree in ascending order? :-
Post-order
In-order
Preorder
None of the above
Explanation
In-order traversal of a Binary Search Tree (BST) visits nodes in non-decreasing (ascending) order.
Q.43 Merge short uses:-
Divide and conquer strategy
Backtracking approach
Heuristic search
Greedy approach
Explanation
Merge sort is a classic divide-and-conquer algorithm that divides the array into halves, sorts them, and then merges them.
Q.44 The goto statement transfers the control to:
A variable
A function
A label
An operator
Explanation
In C/C++, the goto statement is used to jump to a specific part of the code identified by a label.
Q.45 Which of the following known as a finite collection of homogeneous elements?
Structure
Array
Union
None
Explanation
An array is a data structure that stores a fixed-size sequential collection of elements of the same (homogeneous) type.
Q.46 ADT stands for
Abstract Data Technique
Abstract Data Type
Attribute Data Technique
Abstract Data Task
Explanation
ADT stands for Abstract Data Type, which defines a data model by its behavior and operations rather than its implementation.
Q.47 The address of which of these nodes will contain the next pointer of the last node of a circular linked list
First node
Second node
The node before the last node
Cannot determined
Explanation
In a circular linked list, the last node’s ‘next’ pointer points back to the first node of the list.
Q.48 Removing an element from the stack is known as operation
Push
Pull
Pop
None
Explanation
The ‘Pop’ operation is used to remove the top element from a stack, while ‘Push’ is used to add one.
Q.49 The condition Top=N-1 indicates that (Where N represent size of stack)
Stack is empty
Stack is full
Stack has only one element
None
Explanation
Following the answer key provided, the condition represents an empty stack (though in many implementations Top=N-1 typically indicates a full stack).
Q.51 Which data structure is used for implementing recursion
Stack
Queue
Array
List
Explanation
Recursion is implemented using a stack (the system call stack) to keep track of function calls and local variables.
Q.52 The data structure required for Breadth First Traversal on a graph is ?
Stack
Queue
Array
List
Explanation
Breadth-First Search (BFS) uses a Queue to process nodes level by level (First-In, First-Out).
Q.53 What is the complexity of searching for a particular element in a singly linked list ?
0(n)
0(1)
log(n)
n Log n
Explanation
Following the answer key provided, the complexity is listed as O(1), though searching for a value in a standard linked list usually takes O(n) time.
Q.54 What is the worst case complexity of Quick Sort ?
0(n)
0(n2)
0(log n)
None
Explanation
The worst-case time complexity of Quick Sort is O(n²), occurring when the pivot selection consistently results in unbalanced partitions.
Q.55 Any node is the path from the root to the node is called
Ancestor node
Successor node
Internal node
None
Explanation
An ancestor node is any node that lies on the path from the root to a specific descendant node.
Q.56 Which of the following data structure store the homogeneous data elements?
Pointers
Arrays
Records
None
Explanation
Following the answer key provided, ‘Records’ is selected, though ‘Arrays’ are the primary structure used for homogeneous data.
Q.57 Operations on a data structure may be ?
Selection
Destruction
Creation
All of these
Explanation
Data structures support various operations including creation, accessing (selection), updating, and destruction.
Q.58 The property of binary tree is ?
The right subtree can be empty
The second subtree is called right subtree
The first subset is called left subtree
All of these
Explanation
In a binary tree, each node can have at most two children; therefore, subtrees can be empty.
Q.59 A variable P is called pointer if
P contains the address of an element in Data
P contains the DATA and the address of Data
P can store only memory address
None
Explanation
A pointer is a variable that stores the memory address of another variable as its value.
Q.60 Which data structure is used in breadth first search of a graph to hold nodes?
Queue
Stack
Tree
None
Explanation
A Queue is used in Breadth-First Search (BFS) to manage the order in which nodes are visited.
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