DuringwhichphaseofthestepstosuccessmethodologyforCiscoSMBsecuritysolutionswouldtheNetworkReadinessAssessmentbeusedtoassessthereadinessofanexistingnetworkinfrastructureanddeterminewhich，ifany，modificationshouldbemadepriortoimplementation？（）
A. Position
B. Prepare
C. Design
D. Perform
E. Plan
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InwhichtwowaysdoesanintegratedsecuritysolutionreduceTCO？（）
A. byenablingbusinessestoleverageinvestmentsinthenetwork
B. byspendinglesstimeaddressingattacks
C. byenforcingpolicycompliance
D. throughadmissioncontrol
拥塞恢复程序包括（)
A. 选择性信元废弃
B. UPC参数动态设置
C. 严重丢失驱动的反馈
D. 断开连接
以下网络中可以用于承载帧中继业务的是（)
A. LAN
B. X.25
C. DDN
D. ATM
Metro1000设备除去SCB槽位外还有几个槽位：（)
A.1
B.2
C.3
D.4
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