计算机网络第四版课后英文题目

Chapter 1. Introduction Section 1.1. Uses of Computer Networks Section 1.2. Network Hardware Section 1.3. Network Software Section 1.4. Reference Models Section 1.5. Example Networks Section 1.6. Network Standardization Section 1.7. Metric Units Section 1.8. Outline of the Rest of the Book Section 1.9. Summary Chapter 2. The Physical Layer

Section 2.1. The Theoretical Basis for Data Communication Section 2.2. Guided Transmission Media Section 2.3. Wireless Transmission Section 2.4. Communication Satellites Section 2.5. The Public Switched Telephone Network Section 2.6. The Mobile Telephone System Section 2.7. Cable Television Section 2.8. Summary Chapter 3. The Data Link Layer Section 3.1. Data Link Layer Design Issues Section 3.2. Error Detection and Correction Section 3.3. Elementary Data Link Protocols Section 3.4. Sliding Window Protocols Section 3.5. Protocol Verification Section 3.6. Example Data Link Protocols Section 3.7. Summary

Chapter 4. The Medium Access Control Sublayer Section 4.1. The Channel Allocation Problem Section 4.2. Multiple Access Protocols Section 4.3. Ethernet Section 4.4. Wireless LANs Section 4.5. Broadband Wireless Section 4.6. Bluetooth Section 4.7. Data Link Layer Switching Section 4.8. Summary

Chapter 5. The Network Layer Section 5.1. Network Layer Design Issues Section 5.2. Routing Algorithms Section 5.3. Congestion Control Algorithms

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Section 5.4. Quality of Service Section 5.5. Internetworking

Section 5.6. The Network Layer in the Internet Section 5.7. Summary

Chapter 6. The Transport Layer Section 6.1. The Transport Service

Section 6.2. Elements of Transport Protocols Section 6.3. A Simple Transport Protocol

Section 6.4. The Internet Transport Protocols: UDP Section 6.5. The Internet Transport Protocols: TCP Section 6.6. Performance Issues Section 6.7. Summary Chapter 7. The Application Layer Section 7.1. DNS—The Domain Name System Section 7.2. Electronic Mail Section 7.3. The World Wide Web Section 7.4. Multimedia Section 7.5. Summary Chapter 8. Network Security Section 8.1. Cryptography Section 8.2. Symmetric-Key Algorithms Section 8.3. Public-Key Algorithms Section 8.4. Digital Signatures Section 8.5. Management of Public Keys Section 8.6. Communication Security Section 8.7. Authentication Protocols Section 8.8. E-Mail Security Section 8.9. Web Security Section 8.10. Social Issues Section 8.11. Summary Chapter 9. Reading List and Bibliography Section 9.1. Suggestions for Further Reading Section 9.1.1. Introduction and General Works Section 9.2. Alphabetical Bibliography

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计算机网络课后题目

第一章

1. Imagine that you have trained your St. Bernard, Bernie, to carry a box of three 8mm tapes instead of a flask of brandy. (When your disk fills up, you consider that an emergency.) These tapes each contain 7 gigabytes. The dog can travel to your side, wherever you may be, at 18 km/hour. For what range of distances does Bernie have a higher data rate than a transmission line whose data rate (excluding overhead) is 150 Mbps?

2. An alternative to a LAN is simply a big timesharing system with terminals for all users. Give two advantages of a client-server system using a LAN.

3. The performance of a client-server system is influenced by two network factors: the bandwidth of the network (how many bits/sec it can transport) and the latency (how many seconds it takes for the first bit to get from the client to the server). Give an example of a network that exhibits high bandwidth and high latency. Then give an example of one with low bandwidth and low latency.

4. Besides bandwidth and latency, what other parameter is needed to give a good characterization of the quality of service offered by a network used for digitized voice traffic?

5. A factor in the delay of a store-and-forward packet-switching system is how long it takes to store and forward a packet through a switch. If switching time is 10 μsec, is this likely to be a major factor in the response of a client-server system where the client is in New York and the server is in California? Assume the

propagation speed in copper and fiber to be 2/3 the speed of light in vacuum. 6. A client-server system uses a satellite network, with the satellite at a height of 40,000 km. What is the best-case delay in response to a request?

7. In the future, when everyone has a home terminal connected to a computer network, instant public referendums on important pending legislation will become possible. Ultimately, existing

legislatures could be eliminated, to let the will of the people be expressed directly. The positive aspects of such a direct democracy are fairly obvious; discuss some of the negative aspects.

8. A collection of five routers is to be connected in a point-to-point subnet. Between each pair of routers, the designers may put a high-speed line, a medium-speed line, a low-speed line, or no line.

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If it takes 100 ms of computer time to generate and inspect each topology, how long will it take to inspect all of them?

9. A group of 2n - 1 routers are interconnected in a centralized binary tree, with a router at each tree node. Router i …… 此处隐藏：8008字，全部文档内容请下载后查看。喜欢就下载吧 ……