CCNA Discovery 2, Chapter 3

3.1.3: You can identify and track components on a network through proper documentation. A common documented network would include the device name, location, model, operating system, logical address, connection type, and security information.

3.3.1–3.3.5: A business can own its networking equipment or enter into a lease agreement with the ISP to provide and maintain the necessary equipment. When selecting equipment, consider the following points:

• Devices that operate at higher levels of the OSI model can better analyze and forward traffic. Hubs simply repeat binary information, whereas a switch creates temporary circuits using the MAC address and increases collision domains.

• Routers, especially ISRs and Layer 3 switches, have blended functionality.