There needs to be an available IRQ before you can put the card in the machine. Know the difference between User Level and Share Level security. In User Level, security is controlled centrally, and is based on username and password. Share Level is generally used in peer to peer networks and each user controls access to their shared resources. The definition of attenuation is the degradation of a signal over distance.
Crosstalk is signal overflow from an adjacent wire.
Beaconing is the process used on a token ring network that alerts other computers that token passing has stopped due to a serious error. The difference between Connection Oriented and Connectionless Communication is that Connection Oriented attempts to send information, then waits for the OK to send before actually sending. Connectionless just sends the information with no guarantee that the information will be received. In troubleshooting NetWare network connection problems, the first thing to check for is an incorrect frame type. In token ring networks, check the ring speed or check for protocol mismatch.