MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -The first node of the tree is called the root . If this root node is connected by another node, the root is then a parent node and the connected node is a child . All Tree nodes are connected by links called edges .

Detailed explanation-2: -The root node is the highest node in the tree structure, and has no parent. This node is a global element and represents the entire message. It may have one or more child nodes, but can never have sibling nodes or be repeating. The name of the root node can be edited.

Detailed explanation-3: -In a non-empty, full binary tree, the number of internal nodes is always 1 less than the number of leaves.

Detailed explanation-4: -Conventionally, an empty tree (tree with no nodes, if such are allowed) has height −1. Each non-root node can be treated as the root node of its own subtree, which includes that node and all its descendants. Other terms used with trees: Neighbor. Parent or child. Ancestor.

Detailed explanation-5: -A binary tree is made of nodes, where each node contains a “left” reference, a “right” reference, and a data element. The topmost node in the tree is called the root. Every node (excluding a root) in a tree is connected by a directed edge from exactly one other node.