Answer:
Internetwork
Step-by-step explanation:
Internetwork refers to the interconnection between the multiple networks of the computer through which the message could be exchanged with one another and in this, no hardware network is required. The other word of the internetwork is internet
Therefore in the question it is mentioned that you want to double the workstations i.e 50 to 100. Also, new peoples would be work in a distinct unit of business
So this situation represents the internetwork