单项选择题
Which command do you use to navigate to [edit interfaces]?（）
A. cd interfaces B. dir edit interfaces C. edit interfaces D. interfaces
单项选择题 What is an advantage of dynamic routing?（）
单项选择题 In the MAC address 00:90:69:9F:EA:46 what represents the Organizationally Unique Identifier (OUI)?（）
单项选择题 How do oyu write the current candidate configuration to the permanent storage media?（）
