单项选择题
Which command is used to retrieve the serial numbers of a Juniper device?（）
A.show version B.show chassis hardware C.show hardware detail D.view hardware database
单项选择题 What is used to view status messages sent to a file named "test" as they are sent?（）
多项选择题 Which three SONET network elements are used for troubleshooting?（）
单项选择题 When troubleshooting ATM, which command would allow you to test reachability from one side of an ATM cloud to the other?（）
