When deploying GP ON Type C single-homing protection, which of the following description is correct?

• A.The service configuration of ONU access is the same as the configuration before protection
• B.When the olt uplink fails, protection switching can be triggered
• C.A branch fiber break occurs, and the status of the work port of the OLT becomes standby
• D.The two ports protected on the OLT side cannot send and receive data at the same time

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In the GPON network, to measure the luminous condition of the ONU, which of the following options is correct?

• A.Measure the optical power of the PON network directly into the ODN, using 1310 nm to measure
• B.Directly connect to ONU's PON port for measurement by optical power meter
• C.Optical power string through PON network to PON network, using 1490 nm to measure
• D.Turn on the ONU's long light switch by command and then use the optical power measurement

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In order to improve link reliability, the OLT device is configured as a port aggregation group through two uplink ports 0/19/0 and 0/20/0. Each member port in the aggregation group distributes packets according to the source MAC address, and the working mode is LACP aggregation, which of the following configurations is correct?

• A.Huawei (config) #link-aggregation 0/19 0 0/20 0 egress-ingress work mode lacp-static
• B.Huawei (config) #link-aggregation 0/19 0 0/20 0 egress-ingress work mode lacp
• C.Huawei (contig) #link-aggregation 0/19 0 0/20 0 egress work mode lacp-static
• D.Huawei (config) #link-aggregation 0/19 0 0/20 0 ingress work mode lacp-static

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After the DHCP simulation is started, it will automatically stop when the system default timeout period is reached, and the simulation results will be deleted at the same time.

• A.True
• B.False

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Which of the following statements about the PITP protocol is wrong?

• A.PITP protocol includes PITP Pi mode and PITP V mode
• B.In PITP VI mode, the user's physical location information will be added to the P PoE message sent by the user side to cooperate with the upper server for user authentication
• C.The purpose of OPIT feature is to provide the upper-layer authentication server with the physical location information of the access user. After the BRAS device obtains the user access location information, it can realize the binding authentication of the user account and the access location information, avoiding the user account Misappropriation and roaming
• D.PITP P mode can also be called PPOE+ mode

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