cp5601t4 - 6.9. In a LAN, which MAC protocol has a higher...

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CP5610 tutorial 4 (from textbook chapter 6) 6.3. Compare the two-channel approach (Figure 6.4) with the single-channel approach (Figure 6.5) in terms of the types of MAC protocols they can support. 6.8. Consider four stations that are all attached to two different bus cables. The stations exchange fixed-size frames of length 1 second. Time is divided into slots of 1 second. When a station has a frame to transmit, the station chooses either bus with equal probability and transmits at the beginning of the next slot with probability p. Find the value of p that maximizes the rate at which frames are successfully transmitted.
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Unformatted text preview: 6.9. In a LAN, which MAC protocol has a higher efficiency. ALOHA or CSMA-CD? What about in a WAN? 6.17. Suppose that a LAN is to carry voice and packet data traffic. Discuss what provisions if any are required to handle the voice traffic in the reservation, polling, token ring, ALOHA and CSMA-CD environments. What changes if any are required for the packet data traffic? 6.38. Provide a brief explanation for each of the following questions: a. Under a light load, which LAN has a smaller delay: Ethernet or token ring? b. Under a high load, which LAN has a smaller delay: Ethernet or token ring?...
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