For which three functions are passive module USB ports used? (Choose three.)
A. optical power monitoring
B. wavelength provisioning
C. port security
D. lamp lighting for locating
E. serial number for inventory
F. cell phone charging
Which three functions are passive module USB ports used?
They are primarily used for monitoring the optical power levels on fibers connected to the module. But they can also report the serial number of the module and light a locator lamp on the module to make them easier to find.