单项选择题
Which version of spanning tree is recommended for the enterprise campus?（）
A.CST B.MST C.STP D.PVST+ E.RPVST+
多项选择题 Under which two circumstances should Spanning Tree Protocol be implemented?（）
单项选择题 Refer to the exhibit. Which recommended practice is applicable?（）
单项选择题 Which of these recommendations is most appropriate for the Cisco Campus Architecture?（）
