Final answer:
The 'Process Register' domains mentioned seem conflated with different contexts, possibly mixing networking system resources with urban planning domains. The hierarchical view generally applies to domain trees in networking or a process hierarchy in operating systems.
Step-by-step explanation:
The Process Register domains mentioned in the question are most likely referring to the conceptual domains within a networking or operating system context. These would typically describe a hierarchical view of processes or system resources. However, the latter part of the question mentions domains of activity, which are generally divided into residential, commercial, industrial, and transportation. This division is more related to urban planning or geography rather than information technology.
In the context of networking, domain trees might refer to the hierarchical structure of domains within a network, such as in an Active Directory environment where different domains can trust each other, resembling a tree structure. In operating systems, a hierarchy of processes may also be displayed in a tree-like view, showing parent and child processes.
However, since the question seems to have mixed contexts, it is difficult to provide a definitive answer to what the 'default view' specifically shows without additional clarification on the subject matter being referenced.