A one-armed paper hanger

What OSI layer 1 device is commonly called a “multi-port repeater?”

A) Router

B) Cable modem

C) Network Switch

D) Hub

E) I’ll bet it works better than a single-port repeater

The answer: D) Hub

An old-school hub was a relatively simple networking device. Every packet received by one port would be automatically sent out every other port in the hub. This ensured that the packet made it to the destination, but it also wasted bandwidth on every other port. The upgrade to OSI layer 2 switching technology has effectively replaced hubs and provided a much more efficient network communication.

Want to know more? Watch “Network Technologies.”

The fundamental operation of the network uses many different technologies to ensure that traffic will flow properly between devices. In this video module, you’ll learn about status indicators, duplex settings, the difference between workgroups and domains, and much more.