《计算机网络基础》习题参考答案.doc

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1、rapid development of the market economy environment to explore public servants duty consumption monetization reform has provided a good foundation. The socialization of rear service work has been launched, and rapid progress in some places and departments, duty consumption monetization of carrier an

2、d approach to management has been resolved. Third, in recent years, exploring the monetization of duty consumption has made some progress, have gained some experience and can provide reference to the comprehensive reform of the system of public servants duty consumption further. Implementing an “hon

3、est canteen“, standardize official entertaining management; enhancing the telecommunication expense management; elimination of County travel and countryside subsidies; research “village officials“ capitalization management of corporate spending, and so on. Finally, group .18 session to be held in Be

4、ijing from November 9, 2013 to 12th. 35 years ago blew the third plenary session of the reform and opening up in the spring breeze, changed, affect the world; today, 35 years later, in the eyes of the nation and the world expect, again to reform mark China, ushered in the 18 session. XI General Secr

5、etary pointed out that Chinas reform has entered a crucial period and the Sham Shui Po District, must be based on greater political courage and wisdom, lose no time in deepening reform in important fields. Dares to crack a hard nut, dares to question the Rapids, which dares to break the barrier of i

6、deas, and dare to benefit cure barriers. Deepening reform and opening up is on schedule to achieve institutional safeguards of the moderately well-off. Under the “five in one“ the General layout of socialist modernization requirements, 18 session of the decision was a “five in one“ and the improveme

7、nt of overall scheme of reform, will promote an integrated and coordinated economic, political, cultural, social and ecological civilization construction of the five reforms and the partys construction in the area of institutional reform. The “five in one“ programme is to achieve a comprehensive ref

8、orm of institutional guarantees for objectives of build a well-off society, the smooth progress of the construction of a well-off society and reform the objectives of the programme. One, holding time and place importance on November 9, 2013 to the 18 session of the 12th Beijing since 1978, 35, have

9、been 7 plenary session, each time on major issues of political and economic life of the country has made important deployment. In accordance with PRC political practice, often at every session of the CPC Central Committee in a plenary session was held immediately after the partys Congress, on the th

10、eme “personnel“, discussing election Centrals top leaders, such as the election of the Standing Committee of the political Bureau, through the Central Committee members, decisions, such as members of the Central Military Commission. The second plenary session, is held in two sessions before the gene

11、ral election, mainly to discuss a new State personnel issues. But by the thirdplenary session, each session of the Central Committee of national institutions and personnel problems have been arranged, you can concentrate on national development and reforms. Previous plenary session is often branded

12、with a central leading collective, often by looking at the third plenum of the initiative to found the current central leadership collective governance characteristics. From the analysis of the process of economic reform in China, plenary session, 12 session, 14, 16 plenary session have programmatic

13、 meaning, respectively, marking the four stages of Chinas economic reform, and that the start-up phase of reform, reform, construction phase and perfecting the Socialist market economy framework stage of socialist market economy. Previous plenary session topics proposed to the third plenary session

14、of “taking class struggle as the key link,“ shifted to socialist modernization; 12 session marked the change from rural to urban, established with public ownership as the Foundation of a planned commodity economy; 13 session at a time when both the old and the new system change, governance and recti

15、fy the economic order; 14 . Fair and efficient and authoritative Socialist judicial system, safeguard the peoples interests. Legal authority to uphold the Constitution, deepening the reform of administrative law enforcement, ensure that the right to exercise judicial power independently and impartia

16、lly according to law the prosecution, perfecting the running mechanism of judicial power, improve the system of judicial protection of human rights. Plenary session, Affairs the right to adhere to the system, and let the people authority to let the power run in the Sun, is shut up in a cage of the s

17、ystem power policy. Decision Science, implementation should be constructed strong, supervise the running of powerful system, improve the system of punishing and preventing corruption, promoting political integrity, and strive to achieve cadres honest and Government integrity, clean politics. To form

18、 a scientific and effective coordination of power restriction and mechanisms to strengthen anti-corruption institutional innovation and institutional protection, sound improvement style normal system. Plenary session, building a socialist culture in China, enhancing national cultural soft power, mus

19、t adhere to the orientation of advanced Socialist culture, adhere to the development of Socialist culture with Chinese characteristics, adhere to the people-centred work-oriented, further deepening reform of culture. To improve the cultural management system, establish and improve the modern market

20、system and building modern public cultural service system, improve the level of culture opening. Plenary session, achieving development results more equitable benefit of all people, we must speed up reform of social programs and solve the issues of concern to the people the most direct and real inte

21、rest, and better meet the needs of the people. To deepen education reform, improve institutional mechanisms for the习题一一、填空题1 局域网、城域网、广域网2 专用网、公用网3 WWW、FTP、EMAIL4 计算机网络系统5 报文交换、报文分组交换6 电路交换7 防火墙8 telnet9 TCP/IP 协议10域名二、选择题1-5:ABDDB 6-10:ABDBD三、判断1-5:TTFFF 6-10:FTFFF四、简答题1解:(1)把分布在不同地理位置上的具有独立功能的多台计算机

22、、终端及其附属设备在物理上互连,按照网络协议相互通信,以共享硬件、软件和数据资源为目标的系统称作计算机网络。 (2)主要功能:数据通信、资源共享、计算机系统可靠性和可用性的提高、易于进行分布处理2解: 按使用范围分为局域网、城域网和广域网按建设计算机网络的属性来分:公用网和专用网。按网络的拓扑结构来分:星形、总线形、环形、树形、全互连形和不规则形。按信息的交换方式来分:电路交换、报文交换和报文分组交换。 3 (1)远程登录服务 Telnet(Remote Login)(2)文件传送服务 FTP(3)电子邮件服务 E-mail(Electronic Mail)(4)电子公告板系统(BBS)(5)

23、万维网 4解:在对等网络模式中,相连的机器之间彼此处于同等地位,没有主从之分故又称为对等网络(Peer to Peer network) 。它们能够相互共享资源,每台计算机都能以同样方式作用于对方。5(1)星型拓扑结构是由中心结点和通过点对点链路连接到中心结点的各站点组成。星型拓扑结构的中心结点是主结点,它接收各分散站点的信息再转发给相应的站点。目前这种星型拓扑结构几乎是 Ethernet 双绞线网络专用的。这种星型拓扑结构的中心结点是由集线器或者是交换机来承担的。(2)星型拓扑结构有以下优点:由于每个设备都用一根线路和中心结点相连,如果这根线路损坏,或与之相连的工作站出现故障时,在星型拓扑结

24、构中,不会对整个网络造成大的影响,而仅会影响该工作站;网络的扩展容易;控制和诊断方便;访问协议简单。 rapid development of the market economy environment to explore public servants duty consumption monetization reform has provided a good foundation. The socialization of rear service work has been launched, and rapid progress in some places and depar

25、tments, duty consumption monetization of carrier and approach to management has been resolved. Third, in recent years, exploring the monetization of duty consumption has made some progress, have gained some experience and can provide reference to the comprehensive reform of the system of public serv

26、ants duty consumption further. Implementing an “honest canteen“, standardize official entertaining management; enhancing the telecommunication expense management; elimination of County travel and countryside subsidies; research “village officials“ capitalization management of corporate spending, and

27、 so on. Finally, group .18 session to be held in Beijing from November 9, 2013 to 12th. 35 years ago blew the third plenary session of the reform and opening up in the spring breeze, changed, affect the world; today, 35 years later, in the eyes of the nation and the world expect, again to reform mar

28、k China, ushered in the 18 session. XI General Secretary pointed out that Chinas reform has entered a crucial period and the Sham Shui Po District, must be based on greater political courage and wisdom, lose no time in deepening reform in important fields. Dares to crack a hard nut, dares to questio

29、n the Rapids, which dares to break the barrier of ideas, and dare to benefit cure barriers. Deepening reform and opening up is on schedule to achieve institutional safeguards of the moderately well-off. Under the “five in one“ the General layout of socialist modernization requirements, 18 session of

30、 the decision was a “five in one“ and the improvement of overall scheme of reform, will promote an integrated and coordinated economic, political, cultural, social and ecological civilization construction of the five reforms and the partys construction in the area of institutional reform. The “five

31、in one“ programme is to achieve a comprehensive reform of institutional guarantees for objectives of build a well-off society, the smooth progress of the construction of a well-off society and reform the objectives of the programme. One, holding time and place importance on November 9, 2013 to the 1

32、8 session of the 12th Beijing since 1978, 35, have been 7 plenary session, each time on major issues of political and economic life of the country has made important deployment. In accordance with PRC political practice, often at every session of the CPC Central Committee in a plenary session was he

33、ld immediately after the partys Congress, on the theme “personnel“, discussing election Centrals top leaders, such as the election of the Standing Committee of the political Bureau, through the Central Committee members, decisions, such as members of the Central Military Commission. The second plena

34、ry session, is held in two sessions before the general election, mainly to discuss a new State personnel issues. But by the thirdplenary session, each session of the Central Committee of national institutions and personnel problems have been arranged, you can concentrate on national development and

35、reforms. Previous plenary session is often branded with a central leading collective, often by looking at the third plenum of the initiative to found the current central leadership collective governance characteristics. From the analysis of the process of economic reform in China, plenary session, 1

36、2 session, 14, 16 plenary session have programmatic meaning, respectively, marking the four stages of Chinas economic reform, and that the start-up phase of reform, reform, construction phase and perfecting the Socialist market economy framework stage of socialist market economy. Previous plenary se

37、ssion topics proposed to the third plenary session of “taking class struggle as the key link,“ shifted to socialist modernization; 12 session marked the change from rural to urban, established with public ownership as the Foundation of a planned commodity economy; 13 session at a time when both the

38、old and the new system change, governance and rectify the economic order; 14 . Fair and efficient and authoritative Socialist judicial system, safeguard the peoples interests. Legal authority to uphold the Constitution, deepening the reform of administrative law enforcement, ensure that the right to

39、 exercise judicial power independently and impartially according to law the prosecution, perfecting the running mechanism of judicial power, improve the system of judicial protection of human rights. Plenary session, Affairs the right to adhere to the system, and let the people authority to let the

40、power run in the Sun, is shut up in a cage of the system power policy. Decision Science, implementation should be constructed strong, supervise the running of powerful system, improve the system of punishing and preventing corruption, promoting political integrity, and strive to achieve cadres hones

41、t and Government integrity, clean politics. To form a scientific and effective coordination of power restriction and mechanisms to strengthen anti-corruption institutional innovation and institutional protection, sound improvement style normal system. Plenary session, building a socialist culture in

42、 China, enhancing national cultural soft power, must adhere to the orientation of advanced Socialist culture, adhere to the development of Socialist culture with Chinese characteristics, adhere to the people-centred work-oriented, further deepening reform of culture. To improve the cultural manageme

43、nt system, establish and improve the modern market system and building modern public cultural service system, improve the level of culture opening. Plenary session, achieving development results more equitable benefit of all people, we must speed up reform of social programs and solve the issues of

44、concern to the people the most direct and real interest, and better meet the needs of the people. To deepen education reform, improve institutional mechanisms for the星型拓扑结构也存在着一定的缺点: 过分依赖中心结点、成本高。习题二一、填空题1环型、星型2数据报文、线路建立3语义、语法、变换规则4物理层、数据链路层、网络层5集线器、交换机、路由器、网关6建立连接、数据通信、拆除连接7数字8向某一个方向传送信息的、发送、接收9模拟、

45、数字10ARP、RARP、IP、ICMP、IGMP二、选择题1-5:CCABC 6-10:BBCCA 三、判断1-5:FFFTF 6-10:FTTFT四、简答题1 略2 解:物理层叫集线器;数据链路层叫网桥(交换机) ;网络层叫路由器、高层叫网关。3 解:在一条线路上尽可能多的传输多路信号叫多路复用。多路复用分为频分复用和时分复用。4 解:线路交换:面向连接的数据交换方式。完全占用线路资源,保证按照发送顺序到达目的结点。优点是数据传送速度快。缺点是线路出现故障要重新建立连接。分组交换、报文交换:面向无连接的数据交换方式。分段占用线路资源,不能保证按序到达。优点是线路出现故障影响小。缺点是增加了

46、很多冗余控制位。rapid development of the market economy environment to explore public servants duty consumption monetization reform has provided a good foundation. The socialization of rear service work has been launched, and rapid progress in some places and departments, duty consumption monetization of ca

47、rrier and approach to management has been resolved. Third, in recent years, exploring the monetization of duty consumption has made some progress, have gained some experience and can provide reference to the comprehensive reform of the system of public servants duty consumption further. Implementing

48、 an “honest canteen“, standardize official entertaining management; enhancing the telecommunication expense management; elimination of County travel and countryside subsidies; research “village officials“ capitalization management of corporate spending, and so on. Finally, group .18 session to be he

49、ld in Beijing from November 9, 2013 to 12th. 35 years ago blew the third plenary session of the reform and opening up in the spring breeze, changed, affect the world; today, 35 years later, in the eyes of the nation and the world expect, again to reform mark China, ushered in the 18 session. XI General Secretary pointed out that Chinas reform has entered a crucial period and the Sham Shui Po District, must be based on greater political courage and

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