For Microsoft based networks it would be a Domain Controller.For Novell networks it would be a NetWare server.For other types of managed networks it would be a server that has the software for...
stand alone
A server.
a load balancer
The Network Interface Card (NIC) or modem (Dial-up) controls the flow of data between your computer and the cable.
How to Manage Your Network with Cisco Network Magic
Victor Miagkikh on Honeybee Navigation and Computer Science
Understanding your Home Network Router #2 - Understanding and Using DHCP
6 Ways to Manage IT Growth