【正文】 le spent two years of time to learn to speak, but to spend a few years time to shut up. That is a kind of ability, that is a kind of wisdom. 16, life is not perfect, sometimes, growth is not a cry, not an eyeful of tears, there is no trace of emotion, there is no gleam of hope, no desire, no action, no static, there is only one kind of downward sinking feeling, sink A murky? 6? 7? 6? 7 sink? 6? 7? 6? 7 toward the bottom of the sink. 17, in some way, do not go, you will not know the other side scenery is beautiful. To you is not good, you do not mind too much, no one has an obligation to you。t envy him A sum of, don39。am, like a movie, learn to appreciate, learn to be grateful, learn tolerance, and goodness, helping others. Instead of accusing the society, as into one。t envy who. Like a person is a kind of feeling, not like a person is true. The truth is easy to explain, I feel Is unspeakable. The best travel life is that you in a strange place found a long lost touched. 11, happy life not in the bustling in, and in the peace of mind。s mouth, because words will reduce its importance。 you pain, no one can understand. Then you only tears to smile. 8, each people have youth, Each youth are a story, the life of the world never gets easier, I want what, wish the world all know, as has been the same。 loss of sink, Eritrea pany. When you are in adversity, may wish to change a point of view to think everything over to the good Think, because good mentality decided the fate of the! 7, people are tired, rest。 and when we are in a negative state of mind, you will find many depressed things。m afraid he turned to it as a joke to tell don39。t be narrowminded. Poke to care, is a kind of openminded, a free and easy. 5, I am not afraid of others behind me a knife, I afraid to look back and see stab me, is my intention to treat people。t get into a blind alley, don39。 not unrewarding perfunctorily, but calm attitude of life of unrestrained selfconfidence. Plain living, there is no noise noisy, no earthly troubles, more did not fill in the discontent of desire, some just a calm, a calm. 3, memory of heart will not good things to erase the, life is a When no movie, pain is a beginning, the struggle is a kind of process, death is a kind of ending. Give up this giving up is the helpless, do not give up the abandoned, do not give up this giving up is ignorance, do not give up should not give up is persistent. 4, a thing figured is heaven, think impassability is hell. Since the living, to live better. Sometimes we because of too narrowminded, too care around the chores and penny wise and pound foolish, not worth the candle. Some things to attract trouble and worry, pletely depends on how we look at and deal with it. Don39。 not to have conquered, but to have fought well. 2, the plain is the background of life. Live a plain life, give up on themselves is not a coward, but the wise answers。 to implement , do not want to, dare not, not with disciplinary ruler to supervision。(1 0) Rl(configisakmp)encryption 3des ；加密使用 3DES 算法Rl(configisakmp)hash md5 ；定義 MD5 算法Rl(config)crypto isakmp key test123 address (11) ；設(shè)置密鑰為 test123和對(duì)端地址Rl(config)crypto isakmp transformset link ahmd5h esp3des；指定 VPN 的加密和認(rèn)證算法。 Rl(config) interface seria1 0/0 Rl(configif) ip address (7) (8) Rl(configif) no shutdown Rl(config)ip route 。根據(jù)業(yè)務(wù)需求，公司總部的 段與分公司 聯(lián)。 試題五（共 15 分）閱讀以下說(shuō)明，回答問(wèn)題 1 至問(wèn)題 2，將解答填入答題紙對(duì)應(yīng)的解答欄內(nèi)。在 ServerA 的 IPSec 篩選器屬性窗口頁(yè)中（圖 43），源IP 子網(wǎng)的 IP 地址應(yīng)設(shè)為 (9)，目標(biāo)子網(wǎng) IP地址應(yīng)設(shè)為 (10) ，源地址和目標(biāo)地址的子網(wǎng)掩碼均設(shè)為255,。在PC1 的 IPSec 篩選器屬性窗口頁(yè)中（圖 42），源 IP地址應(yīng)設(shè)為 (6) ，目標(biāo) IP 地址應(yīng)設(shè)為 (7) 。 【問(wèn)題 2】 （ 2 分） IPSec 支持傳輸和隧道兩種工作模式，如果要實(shí)現(xiàn) PC1 和 S1之間端到端的安全通信，則應(yīng)該采用 (4)模式。 【問(wèn)題 1】（ 3 分，每空 1 分） IPSec 工作在 TCP/IP 協(xié)議棧的 (1)層，為 TCP/IP 通信提供訪問(wèn)控制、數(shù)據(jù)完整性、數(shù)據(jù)源驗(yàn)證、抗重放攻擊、機(jī)密性等多種安全服務(wù)。 (5)、(6)備選答案： A. ipconfig B. nslookup C. ping D. stat 試題四（共 15 分）閱讀以下說(shuō)明，回答問(wèn)題 l 至問(wèn)題 4，將解答填入答題紙對(duì)應(yīng)的解答欄內(nèi)。 【問(wèn)題 4】 (4 分 ) 在 DNS 系統(tǒng)中，反向查詢 (Reverse Query)的功能是 (4) 。 (1)備選答案： B．使用 NetBIOS 名字解析 C．查找根域名服務(wù)器 務(wù)器 【問(wèn)題 2】（ 2 分） 在圖 31 中，兩臺(tái) Web 服務(wù)器采用同一域名的主要目的是什么？ 【問(wèn)題 3】（ 3 分，每空 ） DNS 服務(wù)器為 WebServer1 配置域名記錄時(shí)，在圖 32 所示的對(duì)話框中，添加的主機(jī)“名稱”為 (2)，“ lP 地址”是 (3) ?！菊f(shuō)明】網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)如圖 31 所示，其中 Web 服務(wù)器 Webserverl 和 Webserver2 對(duì)應(yīng)同一域名 ， DNS服務(wù)器采用 Windows Server 2020 操作系統(tǒng)。fixedaddress (11) 。} 【問(wèn)題 3】（ 6 分，每空 2 分）如果要確保 IP地址 分配給圖 21 中的 PC，需要在 DHCP 配置文件中補(bǔ)充以下語(yǔ)句。 option broadcastaddress (6) 。 defaultleasetime (3) : maxleasetime 14400。 請(qǐng)根據(jù)圖 21 中補(bǔ)充完成 Linux DHCP 服務(wù)器中 DHCP 配置文件的相關(guān)配置項(xiàng)。 【問(wèn)題 1】（ 3 分，每空 分） Linux 服務(wù)器中 DHCP 服務(wù)程序 /usr/sbin/dhcpd 對(duì)應(yīng)的配置文件名稱是 (1)，該文件的缺省目錄是 (2)。 【問(wèn)題 2】（ 4 分，每空 1 分） 該網(wǎng)絡(luò)部分設(shè)備如下表所示： 根據(jù)題目說(shuō)明和網(wǎng)絡(luò)拓?fù)鋱D，在圖 12 中，設(shè)備 1 應(yīng)選用 (6)，設(shè)備 2 應(yīng)選用 (7)，設(shè)備 3 應(yīng)選用 (8)，設(shè)備4 應(yīng)選用 (7)。 1．根據(jù)網(wǎng)絡(luò)需求描述和網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)，圖 12 中介質(zhì) 1 應(yīng)選用 (1)；介質(zhì) 2 應(yīng)選用 (2)；介質(zhì) 3 應(yīng)選用 (3)。 3． 會(huì)議中心采用PoE 無(wú)線網(wǎng)絡(luò)部署。 根據(jù)需求分 析結(jié)果，網(wǎng)絡(luò)規(guī)劃要求如下： 1． 網(wǎng)絡(luò)中心機(jī)房在信息大樓。 (70) A. RMON 的管理信息庫(kù)提供整個(gè)子網(wǎng)的管理信息 B. RMON 的管理信息庫(kù)屬于 MIB2的一部分 C. RMON 監(jiān)視器可以對(duì)每個(gè)分組 進(jìn)行統(tǒng)計(jì)和分析 D. RMON 監(jiān)視器不包含 MIB2的功能 D ● The TCP protocolis a (71) layer protocol. Each connection connects two TCPs that may be just one physical work apart or located on opposite sides ofthe globe. In other words, each connection creates a (72) witha length that may be totally different from another path created by another connection. This means that TCP cannot use the same retransmission time for all connections. Selecting afixed retransnussion time for all connections can result in serious consequences. Ifthe retransmission time does not allow enough time for a (73) to reach the destination and an acknowledgment to reach the source, it can result in retransmission of segments that are still on the way. Conversely, if the retransnussion time is longer than necessary for a short path, it may result in delay for the application for one single connectio