Answer:
a multilayer switch
Step-by-step explanation:
A multilayer switch -
It is a type of networking device , which can work at the higher layers of the OSI reference model , is referred to as a multilayer switch .
It helps to switch between two layers of the OSI and gives more functions on the higher OSI layers .
A multilayer can very efficiently work as a switch as well as a router at a very high speed .
Hence , from the given scenario of the question ,
The device that need to be installed in the basement is a multilayer switch .