Answer: Domain networking
Step-by-step explanation:Domain networking is the networking technology that is used for the cluster of the multiple computer network or hosts in a particular structure unit.This helps in the sharing of the resources in that singles infrastructure through domain.
The name of the domain units are uniquely assigned by the domain name system(DNS) which is accessible by the public internet. Company should use the domain networking for the grouping of the 40 workstation to share the files and other resources .