Explain how access to the Chernobyl exclusion zone is restricted and protected.

An exclusion zone is a territorial division established for various, case-specific purposes.

Per the United States Department of Defense, an exclusion zone is a territory where sanctioning body prohibits specific activities in a specific geographic area (see Military exclusion zone).[1] These zones are created for control of populations for safety, crowd control, or military purposes, or as a border zone, and they may be temporary or permanent.