MCSEguide for MCSE braindump, braindumps and free sample tests. Fiber Optic - expensive and hard to work with. Full Duplex - data going in both directions at the same time. Half Duplex - data going in both directions, one direction at a time. Simplex - data going in one direction only.
Routers determine best path.
Data Link breaks down into MAC Layer and Logical Link Control Layer Logical Link Control handles error and flow control MAC Layer handles access control. Protocols are binded to the network card. All Microsoft products come with a redirector that takes request from the computer and looks to see if it is local or sends to network. Can automatically configure IP addresses. Must know both yours and the one you are connecting to.