单项选择题
A. Layer 2 mode
B. Layer 3 Edge mode
C. Layer 3 Central mode
D. Layer 3 In-Band mode
多项选择题 Refer to the exhibit. Which two of these are characteristics of a firewall running in transparent mode？（）
单项选择题 Atacertaincustomer’ssite，aNASislogicallyinthetrafficpathbutnotphysicallyinthetrafficpath.TheNASidentifiesclientsbytheirIPaddresses.InwhichaccessmodehasthisNASbeenconfiguredtooperate？（）
多项选择题 Whichtwostatementsaboutzoningarecorrect？（）