How many fields are required to represent a header node of a graph?

3

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2

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4

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5

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Solution

The correct option is A $3$
3 fields are required to represent a header node of a graph. A graph is an abstract data type that is meant to implement the undirected graph and directed graph concepts from mathematics, specifically the field of graph theory.
A graph is a collection of points, called vertices, and lines between those points, called edges.

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