1. In a circuit-switched network, can multiple circuits share a single optical fiber? Explain.
2. What is circuit switching, and what are its chief characteristics?
3. If someone wanted to broadcast a copy of a video presentation, is a circuit switching system or a packet switching preferable? Why?
4. In a packet switching system, how does a sender transfer a large file?
1. Name the two sublayers of layer 2 protocols defined by IEEE, and give the purpose of each.
2. What are the characteristics of LANs, MANs, and WANs?
3. What are the four basic LAN topologies?
4. What is a point-to-point networ
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