A few rudimentary physical components are common to most small-to-midsized business (SMB) networks. From physical cables to intelligent Ethernet switches and routers, these pieces help you move the data that keeps your company in business. Although installation and configuration of some of this equipment requires specialized knowledge, you can easily implement most of these components if you're savvy enough to connect a VCR. Even if you rely on outsourced help for the installation of your SMB network, knowing the components and understanding their functionality can help you troubleshoot and repair common network problems.