Final answer:
The type of rule that enables Windows Installer packages to be installed only if they come from a trusted area of the network is called a path rule.
Step-by-step explanation:
The type of rule that enables Windows Installer packages to be installed only if they come from a trusted area of the network is called a path rule.
A path rule restricts the execution of programs based on their file path or location. In this case, the path rule would specify that Windows Installer packages can only be installed if they are located in a trusted area of the network, such as a specific folder or directory.
This type of rule is useful for preventing the installation of potentially harmful or unauthorized software from untrusted sources.