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單項選擇題

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

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單項選擇題

What is used to view status messages sent to a file named "test" as they are sent?（）

A.monitor start test
B.show log test
C.view log test
D.show test realtime

多項選擇題

Which three SONET network elements are used for troubleshooting?（）

A.line
B.path
C.circuit
D.section
E.segment

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