understanding of the following key points should have been achieved:

• A network interface card (NIC) provides network communication capabilities to and from a PC.
• Use a crossover cable to connect between two similar devices, such as switches, routers, PCs, and hubs.
• Use a straight-through cable to connect between different devices, such as connections between a switch and a router, a switch and a PC, or a hub and a router.
• There are two major types of LANs, peer-to-peer and client/server.
• WANs use serial data transmission. WAN connection types include ISDN, DSL, and cable modems.
• A router is usually the DTE and needs a serial cable to connect to a DCE device like a CSU/DSU.
• The ISDN BRI has two types of interfaces, S/T and U interfaces. To interconnect the ISDN BRI port to the service-provider device, a UTP Category 5 straight-through cable with RJ-45 connectors, is used.
• A phone cable and an RJ-11 connector are used to connect a router for DSL service.
• Coaxial cable and a BNC connector are used to connect a router for cable service.
• Rollover cable is used to connect a terminal and the console port of an internetworking device.