单项选择题

Auserreportsthattheyareunabletoreachaparticularwebsite.Theuserhadnoissuesreaching thesiteearlierintheday.WhichofthefollowingistheMOSTlikelycauseofthelackofaccess？（）

A.TheVLANismisconfigured
B.TheuserhasanimproperlyconfiguredNIC
C.TheDHCPserverisdown
D.TheDNSserverisdown

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热门试题

单项选择题Whichofthefollowingfilesshouldbeeditedtodisableremotemachinesfromperforminga'finger'onasystem？（）

A./etc/security/user
B./etc/services
C./etc/inetd.conf
D./etc/hosts.equiv

单项选择题Userscomplaintheycannotcommunicatewithaserver.ThesystemadministratorsuspectstheremaybeaproblemwiththeEthernetadapterorwiththewayitisconfigured.Whichcommandcanberuntoverifytheadapterisconfiguredcorrectly？（）A.netstat-inB.ifconfig-aC.arp-aD.cfgmgr

A.ThesystemadministratorsuspectstheremaybeaproblemwiththeEthernetadapterorwiththewayitisconfigured.Whichcommandcanberuntoverifytheadapterisconfiguredcorrectly？（）
A.netstat-in
B.ifconfig-a
C.arp-a
D.cfgmgr

单项选择题WhichofthefollowingfilesshouldbeusedtoaltertheorderofwhichDNSserversgetqueriedfirst？（）

A./etc/hosts
B./etc/inetd.conf
C./etc/netsvc.conf
D./etc/resolv.conf

单项选择题ADNSserverforalargenetworkisexperiencingperformanceproblems.Whichofthefollowingoptionsisthebestsolutiontofixtheproblem？（）

A.EnableNIS
B.Purchasealargerserver
C.Use/etc/hostsonallofthesystems
D.Createsecondarynameserversthroughoutthenetwork

单项选择题在________视图方式下，可以复制删除幻灯片，调整幻灯片的顺序，但不能对幻灯片的内容进行编辑修改。

A.幻灯片浏览
B.大纲
C.幻灯片放映
D.幻灯片

单项选择题RoutersAandBhaveanOC12candaGElinkbetweenthemandarerunningOSPFoverbothoftheselinks.Whichitemiscorrect，assumingthedefaultJUNOSsoftwareOSPFmetriccalculation？（）

A.TherearetwoequalcostpathsbetweenAandB
B.TheGElinkisthepreferredpathbetweenAandB
C.TheOC12clinkisthepreferredpathbetweenAandB
D.Manualmetricassignmentmustbeconfiguredtodeterminetheoutcome.

单项选择题WhichchoicedescribestheJUNOSsoftwaredefaultpolicyactionforBGProutes？（）

A.IBGPpeers
B.EBGPpeers
C.ActiveBGPpeers
D.EstablishedBGPpeers

单项选择题Whichactionoccurswhenthepolicymain-policyevaluatestheBGProute10.0.55.2 32？（）[editpolicy-options]policy-statementtest{from{route-filter10.0.0.016 orlongeraccept；route-filter10.0.67.0 24orlangerreject；route-filter10.0.0.0 8orlanger；}then{metric10；communityaddno-advertise；accept；}}policy-statementmain-policy{termonly-want-certain-routes{from{policytest；}then{communityaddharry-402；accept；}}}communitynoadvertisemembersno-advertise；communityharry-402members666：402；[editprotocols]bgp{exportmain-policy；}

A.0.55.2/32？（）
B.0.0.016/orlongeraccept；
C.0.67.0/24orlangerreject；
D.0.0.0/8orlanger；

单项选择题Basedontheconfigurationshownintheexhibit，whatwillhappentothetrafficmatchingthesecuritypolicy？（）[editschedulers]user@hostshowschedulernow{mondayall-day；tuesdayexclude；wednesday{start-time07：00：00stop-time18：00：00；}thursday{start-time07：00：00stop-time18：00：00；}}[editsecuritypoliciesfrom-zonePrivateto-zoneExternal]user@hostshowpolicyallowTransit{match{source-addressPrivateHosts；destination-addressExtServers；applicationExtApps；}then{permit{tunnel{ipsec-vpnmyTunnel；}}}scheduler-namenow；}A.ThetrafficispermittedthroughthemyTunnelIPsectunnelonlyonTuesdays.B.ThetrafficispermittedthroughthemyTunnelIPsectunneldaily，withtheexceptionofMondays.C.ThetrafficispermittedthroughthemyTunnelIPsectunnelalldayonMondaysandWednesdays between7：00amand6：00pm，andThursdaysbetween7：00amand6：00pm.D.ThetrafficispermittedthroughthemyTunnelIPsectunnelalldayonMondaysandWednesdays between6：01pmand6：59am，andThursdaysbetween6：01pmand6：59am

A.ThetrafficispermittedthroughthemyTunnelIPsectunnelonlyonTuesdays.
B.ThetrafficispermittedthroughthemyTunnelIPsectunneldaily，withtheexceptionofMondays.
C.ThetrafficispermittedthroughthemyTunnelIPsectunnelalldayonMondaysandWednesdays
D.
E.ThetrafficispermittedthroughthemyTunnelIPsectunnelalldayonMondaysandWednesdays

单项选择题AdefectiveCD－ROMdriveisreplacedwithanewCD－ROMdrive.ThenewCD－ROMdriveisabletoreadanyCDthatitaccesses，butmusicCDsdonotplaymusic.WhatistheMOSTlikelycauseofthisproblem？（）

A.Theaudiocableisnotconnectedtothedrive.
B.Theribboncableisnotconnected.
C.Thepowercableisnotconnected.
D.TheCD-ROMdriversarenotinstalled.