Answer:
It is called a client.
Step-by-step explanation:
Any entity that request data from a centralized node in a network (which is called a server, because once received a request, it replies sending the requested piece of data back to the requester) is called a client.
The server can adopt different names based on its role: It can be a file server, an application server, a web server, a mail server etc.
This sharing information paradigm, where the resources are located in one host (server) to be distributed to many hosts (clients) is called client-server model.