4A0-205 試験問題を無料オンラインアクセス

WDM allows transmission systems to:

• A.Allocate different signals to different time slots
• B.Increase the bit rate of each client signal by spreading it over multiple wavelengths
• C.Share a single signal among multiple fibers doing load balancing, and thus increasing the reliability of the optical transmission
• D.Transport multiple signals transparently, onto several wavelengths, all together over one single fiber

Which macro steps can be executed via CPB?

• A.Systems validation, system provisioning, power adjustment
• B.Node supervision, system validation and system provision
• C.Power adjustment and generation of the system loss report
• D.Node creation, systems validation and system provisioning

Which mechanisms can be put in place to increase network survivability?

• A.Protection, where backup resources are pre-allocated and reserved; or restoration, where backup resources are allocated upon failure.
• B.Protection, where backup resources are allocated upon failure; or restoration, where each trail can be recovered thanks to a 1+1 protection mechanism
• C.Protection, where backup resources are pre-allocated and reserved; or restoration, where each trail can be recovered thanks to a 1+1 protection mechanism
• D.Protection, where backup resources are allocated upon failure; or restoration, where backup resources are pre-allocated and reserved

In which window(s) does the attenuation reach its minimum peak?

• A.First window (850 nm)
• B.Second window (1300 nm)
• C.Both first and second windows
• D.Third window (1550 nm)

How does a Raman pump work in the 1830 specific implementation?

• A.As the incoming signal power increase, the gain of the amplifier is reduced.
• B.The pump light travels in the opposite direction of the signal to be amplified, amplifying it while it arrives from the adjacent node.
• C.The amplification is done simultaneously for all channels as they enter the board.
• D.The pump light travels in the same direction of the signal, amplifying it while it flows in the fiber towards the following node.