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648 Appendix A: Answers to Review Questions
Reducing the costs of managing network operations.
Providing scalability, traffic control, and security.
6
Bridges operate at Layer ___ of the OSI model and forward _________.
2, frames.
7
Name three primary types of cable used in LANs.
Coaxial, twisted-pair, fiber-optic.
8
Routers operate at Layer ___ of the OSI model and forward ___________.
3, packets.
9
List three types of wireless networks.
Infrared, laser, point-to-point transmission.
10
How are traffic loops prevented on switches and routers?
STP, split horizon, poison reverse.
11
What cable is recommended for wiring between closet and campus buildings?
Fiber-optic.
12
What are the four IEEE standards for 10 Mbps Ethernet5?
10Base2, 10BaseT, 10Base5, 10BaseFL.
13
What is the Cisco proprietary protocol for connecting Cisco switches?
ISL.
14
List three functions provided by routers.
Segmenting LANs and WANs.
Determining the best path to the destination.
Communicating route information with other routers.
15
What are some benefits of designing a network with Thinnet?
Relatively inexpensive.
Easy to install.
Easy to configure.
16
What type of cable is recommended to interconnect floors on the campus LAN backbone?
Fiber-optic.
87200333.book Page 648 Wednesday, August 22, 2001 1:41 PM