5.8. Answers to Review Questions

  1. D. A modem is a device that modulates digital data onto an analog carrier for transmission over an analog medium and then demodulates from the analog carrier to a digital signal again at the receiving end. Therefore, traditional (POTS), DSL, and cable are all common types of modems. The NIC is the expansion card you install in your computer to connect, or interface, your computer to the network.

  2. C. Like a hub, a switch connects multiple segments of a network together, with one important difference. Whereas a hub sends out anything it receives on one port to all the others, a switch recognizes frame boundaries and pays attention to the destination MAC address of the incoming frame as well as the port on which it ...

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