单项选择题

DNSserversprovidewhatservice？（）

A.theyrunaspellcheckonhostnamestoensureaccuraterouting
B.theymapindividualhoststotheirspecificIPaddress
C.theyconvertdomainnamesintoIPaddress
D.GivenanIPaddress，theydeterminethenameofthehostthatis…

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单项选择题

ArouterisconnectedtoanHDLCcircuitviaaT1physicalinterface.TheSLAforthislinkonlyallowsforasustainedrateof768kb/s.Burstsareallowedforupto30secondsatuptolinerate，withawindowTcof125ms.WhatshouldtheBcandBesettingbewhenusinggenerictrafficshaping？（）
A.Be=46320000，Bc=96000
B.Be=768000 ，Bc=32000
C.Be=128000 ，Bc=7680
D.Be= 0 ，Bc=96000

A.TheSLAforthislinkonlyallowsforasustainedrateof768kb/s.Burstsareallowedforupto30secondsatuptolinerate，withawindowTcof125ms.WhatshouldtheBcandBesettingbewhenusinggenerictrafficshaping？（）
A.Be=46320000，Bc=96000
B.Be=768000
C.Be=128000
D.Be=

单项选择题

WhatdoesCiscorecommendwhenyouareenablingCiscoIOSIPS？（）

A.Donotenableallthesignaturesatthesametime.
B.DonotenabletheICMPsignature.
C.DisabletheZone-BasedPolicyFirewallbecauseitisnotcompatiblewithCiscoIOSIPS.
D.DisableCEFbecauseitisnotcompatiblewithCiscoIOSIPS..