What Device Typically Connects Broadcast Domains

Routers and other higher-layer devices form boundaries between broadcast domains.

Which connector is typically used in Ethernet?

RJ45 interface is considered the most common twisted-pair connector for Ethernet cables and networks. “RJ” means “registered jack” — a standardized telecommunication network interface for connecting voice and data equipment to a service provided by a local exchange carrier or long-distance carrier.

What tool is used to verify that all the individual wires are properly connected and in the correct location in a cable?

A cable tester is an electronic device used to verify the electrical connections in a signal cable or other wired assembly. Basic cable testers are continuity testers that verify the existence of a conductive path between ends of the cable, and verify the correct wiring of connectors on the cable.