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1、Nol（2分）單選題一些上網(wǎng)用戶抱怨他們不能夠發(fā)送EmailY，但他們?nèi)匀荒軌蚪邮盏叫碌腅mail信件。那么，作為管理員，下而哪一個(gè)項(xiàng)是首先應(yīng)該檢查的：SomeInternetuserscomplaintheycannotsendEmailsbuttheycanstillreceivenewones.Thenasanadministrator,whichofthefollowingitemwillyoucheckfirst?「該Email服務(wù)器H前是否未連接到網(wǎng)絡(luò)上？WhetherthisEmailserverisdisconnectedfromtheInternetnowr處于客戶端和
2、Email服務(wù)器之間的ZXR10路由器接口的訪問(wèn)列表項(xiàng)是否隱含了denySMTP流量的條HWhethertheACLoftheZXR10routerinterfacebetweentheclientandtheEmailserverdefaultstheentryofdenySMTPtrafficQ處丁?客戶端和Email月艮務(wù)器之間的ZXR10路由器接口的訪問(wèn)列表項(xiàng)是否隱含了denyany的條U?WhethertheACLoftheZXR10routerinterfacebetweentheclientandtheEmailserverdefaultstheentryofdenyany
3、r處丁喀戶端和Email服務(wù)器Z間的ZXR10路由器接口的訪問(wèn)列表項(xiàng)是否隱含了denyPOP流量的條目?WhethertheACLoftheZXR10routerinterfacebetweentheclientandtheEmailserverdefaultstheentryofdenyPOPtrafficNo2(2分)單選題當(dāng)今世界上最流行的TCP/IP協(xié)議的層次并不是按OSI參考模型來(lái)劃分的，相對(duì)應(yīng)于OSI的七層網(wǎng)絡(luò)模型，沒(méi)有定義()Thelayersofthemost-welcomedTCP/IPprotocolarenotdividedaccordingtotheOSIrefe
4、reneemodel,for()arenotdefinedincontrastwiththe7-layernetworkmodeloftheOSI廠鏈路層網(wǎng)絡(luò)層Linklayerandnetworklayerc網(wǎng)絡(luò)層與傳輸層NetworklayerandtransportlayerC_傳輸層與會(huì)話層Transportlayerandsessionlayer*會(huì)話層與表示層SessionlayerandpresentationlayerNo3(2分)單選題冃前，我國(guó)應(yīng)用最為廣泛的LAN標(biāo)準(zhǔn)是基丁-的以太網(wǎng)標(biāo)準(zhǔn)Atpresent,themostwidely-usedLANstandardin
5、ChinaistheEthernetstandardbasedon()IEEE802.1IEEE802.2IEEE802.3IEEE802.5No4（2分）單選題一個(gè)VLAN可以看做是一個(gè)（）AVLANcanbeseenasa（）沖突域Collisiondomain廣扌番域Broadcastdomain管理域Managementdomain阻塞域BlockeddomainNo5（2分）單選題以下不屬于動(dòng)態(tài)路由協(xié)議的是Whichofthefollowingoptionsisnotadynamicroutingprotocol?rRIPGICMPrIS-ISfOSPFNo6（2分）單選題關(guān)于
6、千兆以太網(wǎng)，以下說(shuō)法正確的是WhichofthefollowingstatementsaboutthegigabitEthernetiscorrect?IEEE802.3ab定義了千兆以太網(wǎng)在光纖上的標(biāo)準(zhǔn)TheIEEE802.3abdefinesthestandardforthegigabitEthernetontheopticalfiber「在同一沖突域屮，千兆以太網(wǎng)不允許中繼器的互連Inthesamecollisiondomain,thegigabitEthernetdoesnotpermitinterconnectionwiththerepeaterIEEE802.3z專門(mén)定義了千
7、兆以太網(wǎng)在雙絞線上的傳輸標(biāo)準(zhǔn)TheIEEE802.3zspeciallydefinesthetransmissionstandardforthegigabitEthernetonthetwistedpair*千兆以太網(wǎng)支持網(wǎng)絡(luò)速率的自適應(yīng)，可以與快速以太網(wǎng)自動(dòng)I辦商傳輸速率ItsupportsnetworkrateadaptationandcanautomaticallynegotiatewiththefastEthernetont
