第二章

互連網(wǎng)概念綜述本章目標通過本章的學習，您應該掌握以下內(nèi)容:描述數(shù)據(jù)在源和目標設備間的傳送過程清楚集線器、交換機和路由器在網(wǎng)絡中擔當?shù)慕巧凸δ?；懂得在什么情況下該用什么樣的設備根據(jù)網(wǎng)絡需求選擇恰當?shù)腃isco設備定義網(wǎng)絡組件公司總部分部家庭辦公用戶移動辦公用戶因特網(wǎng)層御2層秒1服城務槐器修農(nóng)旅場定含義本網(wǎng)另絡做組摧件聞(嘩續(xù)殃)分妹部家座庭肚辦蓋公I樸S亮D嘩N遠拜程典妙型承網(wǎng)叉絡層就次耀化淋的諸網(wǎng)之絡若結漿構兇定仇義分君布劣層核何心星層訪痰問龜層端超接淹設廊備紙到趴網(wǎng)厭絡積的揮接閣入俱點訪助問寺層訪蠢問哄層金特既性訪千問古層擋的所匯稅接德點路漁由躬數(shù)數(shù)據(jù)分鈴割限廣被播訴域/多天點昆傳第送早域介冒質(zhì)牛轉弟換安你全暫性遠縱程證訪貨問努的便接笑入雅點分匪布努層分肺布漢層助特金性核役心渠層蔥特弟性高虧速質(zhì)傳舍送返數(shù)庭據(jù)對辭數(shù)抓據(jù)疊不替作岸任支何幣處貨理核嘆心望層O繩S扮I模云式涂概塘述應朝用跌層(高古)會佳話仰層表速示精層應辟用肉層O財S悔I模績式徑概與述數(shù)幣據(jù)財流卵層傳楚輸東層數(shù)柔據(jù)雜鏈袋路礎層網(wǎng)活絡合層物畝理摩層應洋用敬層(高陷)會志話季層表吊示渴層應珍用和層應正用恰層可作徹用T童e旱l貴n誓e難tH岸T眨T形P用求戶否接勝口例戴子應血用醉層T錦e瓦l制n纖e宜tH針T險T渴PA姨S刃C炭I察IE疤B注C蛾D鞠I懼CJ紛P延E保G用成戶機接味口數(shù)著據(jù)森表神示加鈔密賠等奮特柄殊拘處慈理撒過洲程例備子表幫示肉層應惱用神層應差用句層套作鍬用T惰e偶l廢n藥e蠟tH礙T技T頌PA殲S艱C畏I吃IE嗚B壩C紅D攪I勺CJ各P鬼E辨G保躍證驗不拳同紋應決用驅間挎的車數(shù)君據(jù)淋區(qū)土分用腐戶失接站口數(shù)古據(jù)倉表橡示加躲密結等超特機殊扔處盆理雷過坐程O喂p秩e認r拆a齒t供i懼n暑g燙S階y只s便t裝e舅m援/A腿p筑p騾l揉i狼c練a紗t疏i混o捐n戴A坊c得c球e僅s打sS呆c曠h欄e準d晃u顆l架i愛n慎g例畏子會坑話六層表封示滋層應浴用繳層應仍用讀層組作乓用保感證施不稿同類應凈用棋間坊的拴數(shù)隊據(jù)梢區(qū)鴨分用丹戶祖接隔口數(shù)畜據(jù)錘表壞示加念密丈等償特鐮殊色處就理塘過坑程TelnetHTTPASCIIEBCDICJPEGOperatingSystem/ApplicationAccessScheduling傳拒輸裙層數(shù)仿?lián)x鏈理路寄層網(wǎng)筋絡潤層物瓜理帽層例秘子會弄話超層表率示碌層應興用灰層應新用恭層裙作蹄用數(shù)秧據(jù)斷流罵層格的運作原用E餐I黨A稀/乞T組I來A粱-腐2旺3潤2技V候.額3魚5例灑子物輩理宮層設筐備投間泛接敵收額或迅發(fā)基送逢比嶺特醋流說鳳明島電協(xié)壓僵、趕線獄速貧和劍線寒纜掩等8媽0事2乏.匹3芳/條8卷0藥2給.酷2H確D坡L考CE喪I界A秘/泳T墻I止A身-拍2戀3瘦2纖V屆.秀3誦5例角子數(shù)樣據(jù)慎流概層握的怠作丙用數(shù)眨據(jù)籍鏈避路蠟層物魂理斤層將編比捆特核組如合助成織字焦節(jié)館進圣而福組錯合騙成習幀用M圍A緊C地劍址園訪堆問嚴介鐵質(zhì)錯卷誤降發(fā)儀現(xiàn)范但貢不挪能辰糾絹正設斬備殺間水接礦收精或獵發(fā)糠送艦比谷特拒流說炮明妖電禍壓殃、漫線雷速菜和筆線寺纜訂等8妄0帖2套.博3憑/即8叛0谷2屋.注2H蝕D掩L含CE主I謠A混/逮T麻I廈A政-雷2窮3么2醬V仇.少3棍5I濕PI邀P欺X例逮子數(shù)拌據(jù)邀流巨層筋的勾作用用網(wǎng)按絡寇層數(shù)肺據(jù)跡鏈樂路磁層物臭理壞層將留比濾特乓組皇合脈成腿字水節(jié)中進剪而棕組那合置成裁幀用M錯A筑C地擺址破訪膜問固介豎質(zhì)錯開誤討發(fā)匪現(xiàn)畜但么不飼能語糾然正設鐘備套間竄接籍收立或夠發(fā)蔑送棒比儲特經(jīng)流說濕明晌電貫壓誕、允線歸速洞和趕線窮纜送等提朗供湖路宿由狼器鍬用猾來課決忠定充路坐徑臣的哪邏購輯嬸尋明址T園C董PU掩D睜PS喊P營X8栽0擴2傳.為3現(xiàn)/吩8購0皮2山.蒸2H侍D屆L調(diào)CE尿I脆A忽/蜻T授I乳A滾-饑2好3繭2面V練.挎3勉5I騎PI磨P嚷X例待子數(shù)術據(jù)膊流停層橫的辮作袖用傳扎輸味層數(shù)接據(jù)脊鏈戚路厭層物爽理采層可魚靠竊或定不銅可互靠你的番數(shù)需據(jù)梢傳悅輸數(shù)阿據(jù)勞重封傳鈴前叮的哄錯練誤殘糾蔽正將蝦比氧特挺組擴合挨成贊字堵節(jié)程進類而愛組廁合象成少幀用M疾A肯C地塵址玩訪燦問腸介兔質(zhì)錯塞誤蓄發(fā)步現(xiàn)村但絡不私能產(chǎn)糾房誠正設襪備裙間怨接增收隱或全發(fā)犯送程比媽特橋流說障明撈電山壓印、化線絲式速紋和戶線哄纜新等網(wǎng)書絡廊層提這供訂路梳由識器線用農(nóng)來鋪決測定屑路窄徑盤的帶邏漲輯釣尋帳址T望C雁PU頃D怨PS持P橋X8淚0即2汁.糠3謙/限8手0革2鍛.分2H社D恩L夾CE肺I易A袍/捧T跌I尊A屆-衫2屢3鋪2鉛V徑.炎3氏5I餃PI飯P咽X表岡示槐層應塘用滿層會躲話寧層例任子數(shù)笛據(jù)域流谷層圣的倆作襪用可櫻靠璃或瘡不通可財靠作的麻數(shù)鏡據(jù)芝傳具輸數(shù)后據(jù)煩重拘傳綁前俱的茅錯嫌誤像糾傍正將我比扶特胳組彈合暈成以字慢節(jié)付進犧而澤組話合膽成夫幀用M講A千C地特址連訪次問飼介欣質(zhì)錯格誤倍發(fā)方現(xiàn)昆但鴿不豆能丘糾將正設看備煎間感接雁收熟或鵲發(fā)攤送撥比倘特寫流說酷明概電汪壓扯、族線快速萍和京線副纜醫(yī)等傳裕輸絡層數(shù)罪據(jù)筋鏈汗路崖層物烈理透層網(wǎng)至絡卸層提線供勁路康由矩器灶用定來苦決動定南路所徑者的隔邏李輯噴尋乖址傳撇輸駛層數(shù)償據(jù)籃鏈菊路鞠層物閑理轉層網(wǎng)到絡姜層上狠層額數(shù)玻據(jù)上沃層丑數(shù)鋸據(jù)T獻C畏P頭數(shù)楚據(jù)I靜P頭數(shù)堅據(jù)L貝L鴉C頭0枕1煉0敞1猜1友1蓮0歉1窗0傅1猛0桶0溜1鉤0肥0器0線0肌1多0數(shù)設據(jù)M望A滴C頭表滅示環(huán)層應妻用冰層會興話畝層段包比雁特幀P別D搭UFCSFCS封淘裝父數(shù)胡據(jù)上止層娃數(shù)擱據(jù)L甚L夏C頭榨+I殘P仍+埋T常C材P虎+上田層褲數(shù)概據(jù)M引A仗C頭I粱P吼+幣T她C駝P禍+上妄層縣數(shù)眉據(jù)L騙L凳C頭T六C軌P射+上宏層振數(shù)返據(jù)I叛P頭上旋層仆數(shù)列據(jù)T華C梨P頭0敲1回0撞1撒1鞏1半0勿1體0皆1炊0系0歪1唉0驗0奪0只0傘1甲0傳粱輸串層數(shù)襖據(jù)蹈鏈騎路閣層物牧理恭層網(wǎng)窮絡陸層表懼示同層應帶用賊層會世話眉層解培封愿裝松數(shù)紫據(jù)應核用拜層表樸示賞層會慰話塵層傳庫輸室層網(wǎng)搏絡今層數(shù)捉據(jù)素鏈本路趁層物棕理陰層O聯(lián)S閥I模焰式P己D患U功作能例傲子練弄習遼：O尿S迅I模續(xù)式定擱義介姥質(zhì)哨類血型連涂接集器鈴類危型信夢號登類上型E胞t分h尸e晴r晶n犯e耳t8棍0俘2邪.動3V寨.則3隱5物簡理輩層E丙I顧A贏/佳T管I靠A傭-呀2拴3其2物村理位層也功錢能物愿理欄層芳:E長t箱h造e洞r網(wǎng)n墾e旅t飛/流8明0梯2戚.曠3集刊線銜器多卻個嬸主壁機主牢機1鏡0B側a鹿s崖e吳2辰—細景纜床以征太從網(wǎng)稠1售0B俗a妖s姜e在5征—粗嘗纜考以絨太紫網(wǎng)1櫻0B蘆a釀s替e哭T匙—雙延絞四線ABCD物艇理古層所邪有班設斤備竹在稍同朱一樣沖世突忠域所聯(lián)有茶設蔥備高在仙同綠一兵廣鴨播咬域所祥有尊設電備碗共群享飾相舒同余的堂帶切寬集糕線密器巷運賭行鋼在配物超理炒層集摔線俘順豆：公同借一針個宰沖趨突霸域接憐入學設喝備發(fā)越鍛多灑沖飯突藥機走率曠越型大用C敬S槍M懲A逢/筒C至D技趟術定耍義源歌和享目亞標戶的防物季理劑地梳址與增幀避關眾聯(lián)念的賄高散層隸協(xié)味議領(S吊e孕r缺v也i瞞c法e妖A繳c夢c煌e坑s懂s波P踏o展i原n套t)網(wǎng)回絡奪拓欠撲幀慮順秋序數(shù)屑據(jù)傘流維控垮制有舒向泊或懸無昆向妖連穗接數(shù)芝據(jù)辯鏈例路犧層物剝理粉層E雅I斧A腥/狹T艙I濤A串-頓2蘿3肌2v訓.層3發(fā)5E莊t則h翅e傷r框n虎e嘴tF瘋r尚a奪m蛾e疑R橫e毅l斧a腸yH贊D皂L約C8能0雁2仍.角28膛0繼2她.府3數(shù)弱據(jù)若鏈潤路規(guī)層淋功堵能數(shù)務據(jù)源繞地純址F膜C洲S長誰度目系標墨地壯址可愿變憲長26640蜓0窄0燒0毅.害0C翁x飯x移.澇x彼x棉x輕x廠予商泊自很己幕分鞠配I困E架E歪E分粗配M瘋A利C子誓層他-捐8饑0免2孩.胳3前擱導精符E撒t頓h屆e曉r挑n啦e嶄t軍I劈燕I在控這渴里跑用“猜T墨y陳p刑e父”指呀明得上骨層棒協(xié)與議宜，上所略以廊不綠用8奏0權2顫.涉2帳.M鴿A別C地乞址8#圾字碌節(jié)數(shù)瓣據(jù)窯鏈悔路紋層迅功違能顯(龍續(xù)觸)數(shù)嘆據(jù)目歡標S婆A爽P源S狀A譜P數(shù)卵據(jù)源禍地邪址F刑C贈S長秒度目拐標錦地糊址可諸變芹長118蜂0倉2繁.炎2宣(S兼A常P勝)M找A草C子育層難-舒8嗓0熟2箱.體3C杰t驅r很l1o碗r超232前捆導厚符數(shù)朵據(jù)目恐標S醋A肌PA宋A源S叔A芳PA閱A可效變犧長118密0心2升.番2途(S磁N望A掛P培)C屯t料r擦l0趴31o嘩r迫2O聚RO帽U簽II從D類侍型數(shù)敏據(jù)傷鏈兄路桌層抬功執(zhí)能槳(箱續(xù)籮)每估段源有辱自噴己謝的棟沖奮突愈域所鳥有吉的仙段覽都制在肢同弄一茅廣究播吃域數(shù)闊據(jù)織鏈皆路旱層或123124交摧換償機條和澇橋生運議行輛在障鏈雹路陪層交倦換款機每變段吸有挺自源己舅的竟沖放突份域廣復播濫信街息嗚向牽所礦有抄段惑轉嫁發(fā)緩菜沖蹈區(qū)交漂換定底義污與憑指掉定稅協(xié)勺議紛相鴨關旺聯(lián)求的討源態(tài)和興目您標斑邏帆輯被地地址定吹義曉通利過素網(wǎng)盲絡藥的壞路爭徑多萄鏈暫路崖連斧接網(wǎng)牧絡雁層I茂P閘,杏I游P昏X數(shù)汗據(jù)冷鏈砍路檔層物懸理深層E閑I哭A室/紋T復I痰A該-槽2文3智2v鐮.罪3兼5E祖t樂h慣e膠r辰n辦e臥t幀鬼中弓繼H科D銳L霜C8槽0涂2徒.芽28禿0管2蜓.擱3網(wǎng)榮絡原層升功蹈能數(shù)驢據(jù)源筆地坦址目唇標粉地墓址I睛P頭1馬7亡2聰.達1申5水.輸1窩.喜1主閑機澤號網(wǎng)鹽絡煌號邏嶼輯蛾地置址網(wǎng)拴絡糕層婦端壟接蚊設甚備宅的阿數(shù)著據(jù)槍包網(wǎng)逼絡揀層米功公能勁(燥續(xù)哀)網(wǎng)盞絡嘴層饑功疑能甜(威續(xù)樂)1贊1聞1旅1徒1茄1前1華11斬1圓1隸1短1固1離1休10巾0鑰0求0距0踩0盡0隙00流0季0欺0聰0濾0盲0添01你0治1窗0優(yōu)1淚1涌0允00繪0悉0拴1碼0尼0肅0房誠00雅1旺1會1聲1宜0嶄1騰01攏1坐0伸0套1狂1油0犧0二紫進殊制杯掩鄭碼二撞進翅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