Final answer:
In configurations, both absolute and relative paths can be used to define a monitored source, with absolute paths being recommended for their reliability and lack of ambiguity.
Step-by-step explanation:
When defining a monitored source in a configuration, it is possible to use both absolute and relative paths. An absolute path specifies the complete path to a file or directory starting from the root directory. On the other hand, a relative path specifies the path relative to the current working directory. It is generally recommended to use absolute paths in configurations to avoid ambiguity and ensure that the system can always find the monitored source regardless of the current working directory.