ccna认证基础课程-课后作业.习题答案

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1、CCNA认证基础-习题分析讲义第一部分第一章1.Convertthebinarynumber10111010intoitshexadecimalequivalent.Selectthecorrectanswerfromthelistbelow.（3）1)852)903)BA4)A15)B36)1C2.ConverttheHexadecimalnumberA2intoitsBase10equivalent.Selectthecorrectanswerfromthelistbelow.（4）1)15

2、62)1583)1604)1625)1646)1663.Whichbinarynumberisarepresentationofthedecimalnumber248?（3）1)111010002)111101003)111110004)111110104.Whichofthefollowingwilltesttheinternalloopbackofanode?（3）1)ping10.10.10.12)ping192.168.1.13)ping127.0.0.14)ping223.223.22

3、3.2235)ping255.255.255.2555.Whatcanbeverifiedbysuccessfullypingingthereservedloopbackaddressonahost?（2）1)ConnectivityexistsbetweentwohostsontheLAN.2)TheTCP/IPstackofthelocalhostisconfiguredcorrectly.3)Aconnectionexistsbetweenahostandthedefaultgateway

4、.4)Therouteapackettakesfromthelocalhosttoaremotehostisvalid.6.WhichofthefollowingcommandscouldbeusedonaWindows-basedcomputertoviewthecurrentIPconfigurationofthesystem?(Choosetwo.)（3，4）1)configip2)ifconfig3)ipconfig4)winipcfg5)Winipconfig2.Refertothee

5、xhibit.WhatmustbeconfiguredonHostBtoallowittocommunicatewiththeHostC?(Choosethree.)（2，4，6）1)theMACaddressofRTArouterinterfaceconnectedtoSwitch12)auniquehostIPaddress3)theIPaddressofSwitch14)thedefaultgatewayaddress5)theMACaddressofHostC6)thesubnetmas

6、kfortheLAN3.Whatareimportantcharacteristicstoconsiderwhenpurchasinganetworkinterfacecard?(Choosetwo.)（2，3）1)securityusedonthenetwork2)mediausedonthenetwork3)systembususedonthecomputer4)softwareinstalledonthenetwork5)diagnostictoolsinstalledonthenetwo

7、rk第二章1.Selectthenecessaryinformationthatisrequiredtocomputetheestimatedtimeitwouldtaketotransferdatafromonelocationtoanother.(Choosetwo.)（1，5）1)filesize2)dataformat3)networkinuse4)typeofmedium1)bandwidthofthelink2.UsingthedatatransfercalculationT=S/B

8、W,howlongwouldittakea4MBfiletobesentovera1.5Mbpsconnection?（2）1)52.2seconds2)21.3seconds3)6.4seconds4)2seconds5)0.075seconds6)0.0375seconds3.WhatarefeaturesoftheTCP/IPTransportlayer?(Choosetwo.)（3，5）1)pathdetermination2)handlesrepresentation,encoding