A single attribute domain can be associated with which of the following? (Choose two.)

The concept of a single attribute domain in GIS refers to a set of valid values that can be assigned to a specific field in a feature class. A single attribute domain is typically designed to ensure data integrity by restricting the values that can be input into a field.

An attribute domain can be associated with more than one field in a single feature class when that domain is intended to maintain consistency across multiple fields related to similar data. This allows for a standardized set of valid entries across various attributes, helping to ensure data accuracy and coherence within that feature class.

In addition to this, it is also possible for an attribute domain to be associated with one or more fields in each of several feature classes. This is particularly useful in situations where multiple feature classes share similar attributes that should conform to the same set of valid values, enhancing data consistency across the entire GIS database.

Therefore, recognizing that a single attribute domain can be associated with multiple fields in a feature class, as well as across multiple feature classes, highlights its utility in maintaining standardized data entry and improving the overall quality of the dataset.