Trees In Data Structures — Part 1 MCQs with Explanations

2 is the correct answer to “What is the maximum number of children a node in a binary tree can have”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Leaf is the correct answer to “In a binary tree, what is the term for the node with no children”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Inorder is the correct answer to “Which traversal method of a binary tree involves visiting the left subtree, then the root, and then the right subtree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

n-1 is the correct answer to “How many edges does a full binary tree with n nodes have”. This question is standard in competitive examination syllabi for Trees In Data Structures.

0 is the correct answer to “What is the height of a binary tree with a single node”. This question is standard in competitive examination syllabi for Trees In Data Structures.

All nodes in the right subtree are greater than the root node is the correct answer to “In a binary search tree (BST), which property is true about the nodes”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Complete binary tree is the correct answer to “What type of binary tree has all levels fully filled except possibly the last level”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Inorder is the correct answer to “Which of the following is NOT a type of binary tree traversal”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Queue is the correct answer to “In a level-order traversal of a binary tree, which data structure is commonly used”. This question is standard in competitive examination syllabi for Trees In Data Structures.

The number of children the node has is the correct answer to “What is the degree of a node in a tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

The height difference between the left and right subtrees is at most 1 is the correct answer to “What is a key characteristic of a balanced binary tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Perfect Binary Tree is the correct answer to “In which type of binary tree is every node with two children in the internal node”. This question is standard in competitive examination syllabi for Trees In Data Structures.

AVL trees maintain balance, ensuring O(log n) operations is the correct answer to “What is the main advantage of an AVL tree over a standard binary search tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Every path from a node to its descendant leaves has the same number of black nodes is the correct answer to “In a Red-Black tree, which property ensures that the tree remains balanced”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Preorder is the correct answer to “Which traversal method of a binary tree visits the root node first”. This question is standard in competitive examination syllabi for Trees In Data Structures.

O(n) is the correct answer to “In a Binary Search Tree (BST), what is the time complexity of searching for an element in the worst case”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Preorder is the correct answer to “What type of tree traversal involves visiting the root node, then recursively visiting the left subtree, and finally the right subtree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Inorder is the correct answer to “Which type of binary tree traversal is useful for creating a sorted list of elements”. This question is standard in competitive examination syllabi for Trees In Data Structures.

A complete binary tree is filled completely at all levels except possibly the last, while a full binary tree has all nodes with either 0 or 2 children. is the correct answer to “What is the key difference between a complete binary tree and a full binary tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

B-Tree is the correct answer to “Which type of binary tree is specifically designed to store key-value pairs and supports efficient search, insertion, and deletion operations”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Root is the correct answer to “In a binary tree, what is the term used to describe a node with no parent”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Each node in a binary tree has at most two children, whereas in a general tree, nodes can have more than two children. is the correct answer to “What property distinguishes a binary tree from a general tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Preorder is the correct answer to “Which traversal method is typically used for creating a mirrored image of a binary tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

O(log n) is the correct answer to “What is the time complexity of inserting an element into an AVL tree in the worst case”. This question is standard in competitive examination syllabi for Trees In Data Structures.

By performing rotations to move accessed nodes to the root is the correct answer to “How does a Splay Tree ensure that recently accessed elements are quick to access again”. This question is standard in competitive examination syllabi for Trees In Data Structures.

It determines the maximum number of children each node can have is the correct answer to “In a B-Tree, what is the significance of the "order" of the tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Storing a dictionary for fast prefix-based searches is the correct answer to “What is a common use case for a Trie data structure”. This question is standard in competitive examination syllabi for Trees In Data Structures.

It ensures the tree remains balanced is the correct answer to “In a Red-Black Tree, what does the property that "every path from a node to its descendant leaves has the same number of black nodes" ensure”. This question is standard in competitive examination syllabi for Trees In Data Structures.

2L is the correct answer to “What is the maximum number of nodes at level L of a binary tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

A binary heap maintains a heap property and is typically used to implement priority queues, while a binary search tree maintains sorted order of elements. is the correct answer to “What is the key difference between a binary heap and a binary search tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

They are a type of self-balancing binary search tree. is the correct answer to “Which of the following statements about AVL trees is true”. This question is standard in competitive examination syllabi for Trees In Data Structures.

The node that comes immediately after a given node in an inorder traversal. is the correct answer to “What does the term "inorder successor" refer to in a binary search tree (BST)”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Inorder, Preorder, or Postorder is the correct answer to “Which traversal technique would you use to create a depth-first search of a binary tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

It performs rotations to move accessed elements closer to the root. is the correct answer to “What is the main characteristic of a splay tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

O(log n) is the correct answer to “In a Binary Search Tree (BST), what is the time complexity of deleting a node”. This question is standard in competitive examination syllabi for Trees In Data Structures.

By checking if each node's left children are smaller and right children are larger. is the correct answer to “How do you determine if a binary tree is a binary search tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

It guarantees O(log n) time complexity for insertion, deletion, and search operations. is the correct answer to “What is the main advantage of using a Red-Black Tree over a regular binary search tree”. This question is standard in competitive examination syllabi for Trees In Data Structures.

Inorder is the correct answer to “In a binary tree, which type of node traversal will visit nodes in increasing order”. This question is standard in competitive examination syllabi for Trees In Data Structures.

All levels are completely filled except possibly the last level, which is filled from left to right. is the correct answer to “In a complete binary tree, which property holds true”. This question is standard in competitive examination syllabi for Trees In Data Structures.

log2(n) is the correct answer to “What is the height of a complete binary tree with n nodes where n is a power of 2”. This question is standard in competitive examination syllabi for Trees In Data Structures.