H31-331 무료 덤프문제 온라인 액세스

During the normal operation of the network, the service working channel protected by the ODUk SNCP generates the conditions for triggering the protection switching. The service is automatically switched to the protection channel. After the working channel is faulty, the service cannot be automatically restored back to the working channel.
Which of the following are the possible reasons ()? (multiple choice)

• A.When the working channel is normal, the service needs to be delayed by the "waiting for recovery time" and then switched back to the working channel by the protection channel.
• B.Artificially implemented manual switching, lock switching or forced switching commands
• C.The protection group "recovery mode" is "non-recovery"
• D.A small number of errors occur in the working channel
• E.The SNCP type is inconsistent with the business scenario requirements.

Which of the following descriptions of configuring APE functions is wrong?

• A.The APE pair consists of an adjustment site and a detection site. Create an APE pair on the sending NE.
• B.For the wavelength channel that needs to enable the APE function, make sure that the optical layer crossover corresponding to the channel is correctly established before configuring the APE.
• C.After creating an APE pair, you also need to set the wavelength monitoring parameter to set the
  "monitor flag" to "disabled" for wavelengths that do not need to be monitored.
• D.When the system is in normal operation and the adjustment of each channel reaches the equilibrium state, the user can use the current power curve as the standard curve as the standard for APE detection.

When performing fiber synchronization, the following does not mean the meaning of the fiber representation for the network element. Which one is correct?

• A.The fiber connection exists on the network management side and the network element side.
• B.Fiber connection only on the local network management side
• C.Fiber connection only on the NE side
• D.The fiber connection that does not exist on the network management side and the network element side

Which of the following statements is wrong for ROADM?

• A.The use of ROADM is a prerequisite for implementing the optical layer ASON function.
• B.ROADM can achieve flexible upper and lower wavelengths within the site
• C.The use of ROADM is a prerequisite for implementing the electrical layer ASON function.
• D.ROADM can realize automatic adjustment of optical power

What are the optical layer paths in the path hierarchy of the WDM network? (multiple choice)

• A.OTU
• B.OCh
• C.OMS
• D.OTS