Chapter 10 Review Questions

3. What is meant by failover time?
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7. What are the main characteristics of a circuit-switched network? What are its advantages and disadvantages?
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8. What are the main characteristics of a datagram packet-switched network? What are its advantages and disadvantages?
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9. What are the main characteristics of a virtual circuit packet-switched network? What are its advantages and disadvantages?
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10. How does a connectionless network application differ from a connection-oriented network application?
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14. For a weighted network graph, how many different definitions of weight can you list?
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15. What are the basic goals of Dijkstra's least cost algorithm?
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16. How can flooding be used to transmit a data packet from one end of the network to another?
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18. What are the main advantages and disadvantages of:
a. centralized routing
b. distributed routing
c. adaptive routing
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20. What can cause network congestion?
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22. What does Quality of Service have to do with network congestion?
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Chapter 10 Exercises
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1. State three advantages of a SONET-based metropolitan area network over an Ethernet-based metropolitan area network.
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2. State three advantages of an Ethernet-based metropolitan area network over a SONET-based metropolitan area network.
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3. Which type of network application requires more elaborate software: connection-oriented or connectionless? Explain.
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5. Explain the difference between a network node and a network station.
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6. Does a datagram communications network require any setup time before a packet is transmitted? Explain your answer.
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7. Does a virtual circuit communications network require any setup time before a packet is transmitted? If so, when and how often?
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9. You are downloading a file over the Internet. Is the download a connectionless application or a connection-oriented application? Explain.
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12. How do you determine the hop limit in flooding?
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14. What can be done to protect a centralized routing network if the computer hosting the central routing table fails?
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15. What happens in a virtual circuit packet-switched communications network if a node or communications link along the virtual path fails?
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16. Does an Ethernet network support quality of service? Explain.
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