Depends on the company.
If it's manufacturing,
you will have to handle Servers + all payroll + cctv+ financial software + purchasing + inventory + social media + graphic design.
so basically anything that falls into the category of "smart" you will have to get involved and handle them,
Other companies
Network + voice + limited purchasing
So,
they will either ask u about ERP systems, Active directory, firewalls/vpns, cctv, hardware related questions