Which of the following descriptions about the function of MPLSOAM is wrong?

• A.FDI can suppress other alarms of Egxes nodes and can indicate the fault location
• B.It can effectively detect, identify and locate the defects of PLS network
• C.The Ping function can accurately locate the faulty node
• D.CV/FFD is used to detect the connectivity of Tunnel and PW

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The gain wavelength of the fiber Raman amplifier is determined by the wavelength of the pump light. As long as the wavelength of the pump source is appropriate, the signal amplification of any wavelength can be theoretically obtained.

• A.False
• B.True

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() that is, the wavelength carrying local services can be transmitted to a fixed direction. Directionless: The wavelength carrying local services can be transmitted in any direction.

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Which of the following options are commonly used test instruments for transmission systems? (Multiple choice)

• A.Optical power meter
• B.OTDR (Optical Time Domain Reflectometer)
• C.SmartBits Tester
• D.SDH tester
• E.Spectrum Analyzer

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What are the PWRA, PWRB, and PWRC on the SSN1GSCC board corresponding to the alarm objects? Which of the following options is correct?

• A.-48V power indicator system+3.3V backup power indicator system+5.0V backup power indicator
• B.Road A-48V power indicator light B-way-48V power indicator system+5.0V backup power indicator
• C.-48V power indicator system+5.0V backup power indicator system+3.3V backup power indicator
• D.Road A-48V power indicator light B-way-48V power indicator system+3.3V backup power indicator

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