Whichofthefollowingcommandsisusedtodisplaydetailedethernetstatisticsforent0？（）

A.1 B.2 C.3 D.4

<img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/047d17bb6e10a6f1cb1952efc83707eb.jpg' /> AllnetworkserversrunWindowsServer2003.AllclientcomputerIPaddressesareassignedbyusingaDHCPserverthatislocatedineachoffice.Clientcomputersarereimagedoftenandareassignednewnameseachtimetheyarereimaged.AllclientcomputersareconfiguredtoreferencetheirlocalDNSserverasthepreferredDNSserverandtoreferencethecentralDNSserverasthealternateDNSserver.Aprimaryzoneforlitwareinc.comisconfiguredonaserverintheLimaoffice.Secondaryzonesareconfiguredonaserverineachbranchoffice.Theretryinterval，therefreshinterval，theexpirationinterval，andthedefaultminimumTimetoLive（TTL）intervalareconfiguredwiththedefaultsettings.Networkbandwidthutilizationaverages40percent.ThenetworkconnectionbetweentheLimaofficeandtheBogotaofficefailsanaverageoftwiceperday.UsersintheBogotaofficeoccasionallyreceiveincorrectresponsestoqueriesagainstthelocalDNSserverwhenthenetworkconnectionisinterruptedduringazonetransfer. Youneedtochangetheconfigurationofthestartofauthority（SOA）resourcerecordforlitwareinc.com.Inaddition，youneedtoreducethepossibilitythatuserscanquerylocalDNSzonesbeforesuccessfulzonetransfersoccur. Whatshouldyoudo？（）

是 否

A.流程图法 B.试验设计 C.控制图 D.帕累托图

A．A.从小学习 B．B.晚年学习比年轻学习更重要 C．C.终身学习 D．D.中年更要注重学习