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                                   CHAPTER ELEVEN ANSWERS TO REVIEW QUESTIONS
 

1. A LAN is used in a small geographical area while a WAN is used in a large area.

2. Three hardware components needed in a LAN are a PC, a network interface card, and a cable.

3. The network adapter card is placed in a slot inside the PC.

4. CDPD is used in a wireless network.

5. Four types of IEEE standards, which apply to LANs are:
a. IEEE 802.3 Ethernet
b. IEEE 802.4 Token-passing bus
c. IEEE 802.5 Token-passing ring
d. IEEE 802.11 Wireless LANs

6. Inactive stations on a ring LAN cannot respond to messages while active stations can respond.

7. A ring network is a closed loop. In a bus network, the ends are not attached and terminators are used at each end of the cable.

8. Bus.

9. Star.

10. Ethernet.

11. CSMA/CD is a contention method. The stations send messages, and if a collision occurs, the stations stop transmitting, wait a random amount of time, and try to retransmit.

12. Token passing is a fair protocol.

13. In token ring, the data is added to the token and then transmitted around the network. In token bus, the token is taken off the network while the data is transmitted.

14. ARCNET is the most common form of a token bus network.

15. AppleTalk is used with Macintosh computers.

16. Star, central switch.

17. In a peer network, all PCs are equal, and can share hardware. In a server-based LAN, one PC is in charge and files are stored in a single place.

18. A file server shares files, and transfers files to a workstation as requested. A database server is used to perform a calculation at the server, based on an inquiry, and send only a single record or the result of the calculation back to the workstation.

19. Novell NetWare can be used for server-based LANs on DOS computers.

20. A bridge is used to connect networks that use the same protocol, and a gateway is used to connect networks that use different protocols