Question

the node of a linked list is made of two variables : a) data, b) link to the next node"

Answer 1

Answer:

A linked list is a linear data structure, in which the elements are not stored at contiguous memory locations.

In simple words, a linked list consists of nodes where each node contains a data field and a reference(link) to the next node in the list. Topics : Singly Linked List.

Explanation:

Data is measured, collected and reported, and analyzed, whereupon it can be visualized using graphs, images or other analysis tools.

Data as a general concept refers to the fact that some existing information or knowledge is represented or coded in some form suitable for better usage or processing.