Which of the following clock working modes support the ITU-T G.781 standard? (Multiple Choice)

• A.Master/Slave
• B.Free-run
• C.Tracing
• D.Holdover

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When a fiber cut test is performed on a normal MSP ring, which of the following alarms is reported?
(Multiple Choice)

• A.R-LOS
• B.BD STATUS
• C.APSJNDI
• D.TU-AIS

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For the (local) HA solution where the active and standby servers are deployed in the same place, which of the following platforms can be deployed? (Multiple Choice)

• A.All of the above
• B.SUSE Linux
• C.Solaris
• D.Windows

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Which of the following are different types of ESCs divided by implementation principles?

• A.Inserted DCC
• B.Pilot tune DCC
• C.None of the above
• D.Fixed frame structure DCC

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Which of the following is not a non-linear effect?

• A.Dispersion
• B.Self-phase modulation (SPM)
• C.Raman scattering
• D.Four-wave mixing (FWM)

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