单项选择题 在多台交换机之间规划VLAN流量时，有效的考虑因素是什么？（）

单项选择题 共用题干题Manyoftheactivitiesperformedduringthepreliminaryinvestigationarestillbeingconductedin(1),butinmuchgreaterdepththanbefore.Duringthisphase,theanalystmustbecomefullyawareofthe(2)andmustdevelopenoughknowledgeaboutthe(3)andtheexistingsystemstoenableaneffectivesolutiontobeproposedandimplemented.Besidesthe(4)forprocessanddataofcurrentsystem,thedeliverablefromthisphasealsoincludesthe(5)fortheproposedsystem.空白（4）处填（）A.logicalmodelsB.physicalmodelsC.designmodelsD.implementationmodels

单项选择题 共用题干题Manyoftheactivitiesperformedduringthepreliminaryinvestigationarestillbeingconductedin(1),butinmuchgreaterdepththanbefore.Duringthisphase,theanalystmustbecomefullyawareofthe(2)andmustdevelopenoughknowledgeaboutthe(3)andtheexistingsystemstoenableaneffectivesolutiontobeproposedandimplemented.Besidesthe(4)forprocessanddataofcurrentsystem,thedeliverablefromthisphasealsoincludesthe(5)fortheproposedsystem.空白（5）处填（）A.hardware and software specificationB.system performance specificationC.formal requirements definitionD.generalproblemstatement