For the OSN 3500, there is a slot mapping relationship between processing boards and interface boards. The processing board in slot 1 maps to the interface board in slot 19-20.

A. TRUE

B. FALSE

On the OSN series transport devices, Ethernet ports cannot access tagged frames and untagged frames at the same time.

A. TRUE

B. FALSE

When synchronization is performed on the 1U2000, the NE data that is the same as that on the U2000 is not uploaded to the U2000, and the data that exists on the U2000 but not on the NE is deleted.

A. TRUE

B. FALSE

Which of the following is not an EVPLAN feature?

A. Bandwidth sharing

B. Forwarding based on MAC addresses

C. Point-to-point and point-to-multipoint topologies

D. Multipoint-to-multipoint topology

Which of the following is the impact of changing the NE ID of OSN 3500 on the NMS?

A. Services are interrupted.

B. The device is restarted.

C. NE communication is interrupted.

D. The NE time is not synchronized.

Automatic laser shutdown (ALS); When no optical signal is received, the ALS function automatically shuts down the corresponding optical module. This function protects onsite maintenance personnel.

A. TRUE

B. FALSE

When severely errored seconds (SESs) are present in the PM section at the ODUk layer, which of the following alarms is reported on the NMS?

A. ODUk_PM_ES

B. ODUk_PM_SES

C. ODUk_PM_SESR

D. ODUk _PM _UAS

Which of the following statements about the multiplex section remote error indication (MS-REI) is correct?

1.

The B2 byte indicates the transmission channel.

2.

The Ml byte indicates the transmission channel.

3.

MS-REI is transmitted from the sink to the source.

4.

MS-REI is transmitted from the source to the sink.

5.

Indicates the number of detected bit errors after the sink receives the MS signals.

A. 1 , 4 , 5

B. 2 , 4 , 5

C. 1 , 3 , 5

D. 2 , 3 , 5

Which of the following statements about the sequence of a signal flow between the SDH interface and the cross-connect unit is correct?

A. SPI< >RST< >MST< >MSP< >MSA< >HFT

B. SPI< >RST< >MSA< >MSP< >MST< >HFT

C. SPI< >MST< >RST< >MSA< >MSP< >HFT

D. SPT< >MST< >MSA< >RST< >MSP< >HPT

Which of the following service levels cannot be selected during service configuration?

A. VC12

B. VC8

C. VC4

D. VC3