Lan extensions fiber modems repeaters bridges and


1 - LAN Extensions: Fiber Modems, Repeaters, Bridges, and Switches

1 When an optical fiber is used to extend a connection to a LAN, what additional devices are needed?

2 When bridging is used with a satellite link, two bridges are typically used, one on each side. Explain why.

2- WAN Technologies and Dynamic Routing

1 What are the conceptual parts of a traditional packet switch, and to what does it connect?

2 What benefit does dynamic routing offer?

3- Networking Technologies Past and Present

1 Which would you expect to have smaller delay, VSAT technology or WiMAX technology? Why?

2 What technology has replaced Ethernet hubs?

4- Internetworking: Concepts, Architecture, and Protocols

1 What is the chief difficulty in providing universal service?

2 In the 5-layer reference model used with the TCP/IP Internet protocols, what is the purpose of each of the five layers?

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