What is a common name for a hierarchy of directories?

The term "Tree" describes a hierarchy of directories because it visually represents how data is organized within a filesystem. In this model, each directory can contain subdirectories and files, much like branches stemming from a single trunk in a tree. The root directory serves as the starting point, and as you navigate through subdirectories, they represent the branches growing from that trunk. This structure allows for efficient organization and easy traversal of files within a computer, reflecting the parent-child relationships between the different levels of directories.

In contrast, the other terms do not accurately describe the structure of directories. A "Network" refers to a system of interconnected computers or devices, not a hierarchical organization of files. A "Graph" is a more complex structure that can represent various relationships between nodes but does not specifically imply a hierarchy. Lastly, a "Map" typically refers to a representation of geographical data or a display of paths, which doesn’t capture the essence of hierarchical directory structures. Thus, "Tree" is the most appropriate term for this concept.