When configuring the L3VPN service, which operation will cause the service configuration to fail?

• A.Create the UNI port from the base station direction as a VLAN aggregation sub-interface
• B.The IP address configured before the Layer 3 port is added to the UNI of the L3VPN
• C.The IPs of the two service access ports in the direction of the base station are the same IP
• D.Enable ARP proxy on VLAN aggregation sub-interfaces

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There are five trigger conditions for the execution of protection switching. According to the priority of the trigger conditions, they are arranged from high to low. Which of the following is correct?

• A.Clear Switching > Forced Switching > Locked Switching > Manual Switching > Automatic Switching
• B.Locked Switching>Clear Switching>Forced Switching>Automatic Switching>Manual Switching
• C.Clear Switching > Lock Switching > Forced Switching > Automatic Switching > Manual Switching
• D.Locked Switching>Forced Switching>Clear Switching>Automatic Switching>Manual Switching

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Which of the following services can be processed by MP1 processing board?

• A.CES E1
• B.Ethernet
• C.IMA E1
• D.ML-PPP

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The pump laser is the energy source of the EDFA, and its function is to provide energy for the amplification of the optical signal. Which of the following wavelengths can be used as the output wavelength of the pump source in the EDFA structure?

• A.1310nm
• B.1510nm
• C.1480nm
• D.980nm

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In which layer of overhead is the segment monitoring overhead SM located?

• A.OTUK
• B.ODUK
• C.OMS
• D.OPDK

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