为了使国家、公共利益，本人或他人的人身、财产和其他权利免受正在发生的危险，不得已而采取的损害另一个较小的合法利益的行为是（）
A. 正当防卫
B. 防卫过当
C. 紧急避险
D. 避险过当
Whichstatementdescribesexceptiontraffic?（）
A. ExceptiontrafficmustbesenttothePFEforprocessing.
B. Exceptiontrafficentersoneingressportandissentoutmultipleegressports.
C. Exceptiontrafficisrate-limitedontheinternallinktopreventDoSattacks.
D. Exceptiontrafficisprocessedafterforwardingtrafficwhencongestionexists.
Whichtwostatementsbestdescribestheroleofarouteronabroadcastdomain?（）
A. Routersfacilitatecommunicationswithinabroadcastdomain.
B. Routersfacilitatecommunicationsbetweenbroadcastdomains.
C. Routersareusedtobreakupbroadcastdomainsintoseparatenetworks.
D. Routersareusedtoconnectsmallbroadcastdomainsandformlargermoreefficientbroadcastdomains
WhentheInfranetEnforcerissetupintransparentmode,whichadditionalresourcepolicymustbeconfiguredtouseOACforIPsecenforcement?（）
A. IPsecRouting
B. AccessControl
C. IPAddressPool
D. SourceInterface
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