NO.226 A and C are WDM OTM sites, and B is a regeneration site. If the ODU2_LCK signal is inserted at site A, which of the following statements are correct?

• A. Site C reports a ODU2_PM_LCK minor alarm.
• B. Site A reports a ODU2_PM_BDI minor alarm.
• C. Site C reports a ODU2_PM_BDI minor alarm.
• D. Site A reports a ODU2_PM_LCK minor alarm.

NO.227 Which of the following Optical NE types are defined in U2000?

• A. WDM_OEQ
• B. WDM_OLA
• C. WDM OADM
• D. WDM_OTM

NO.228 Which of the following residual dispersion values are within the dispersion tolerance of the TN52ND2 board?

• A. 500ps/nm
• B. 900ps/nm
• C. 700ps/nm
• D. 600ps/nm

NO.229 When the grooming service level of the line board is ODUflex, which of the following protection schemes can be supported?

• A. ODUk SNCP
• B. ODUk SPRing protection
• C. SW SNCP
• D. Tributary SNCP

NO.230 In the case of the OptiX OSN equipment, when the standby board is normal, which of the following operations does not cause the active/standby switching of the cross-connect board or clock board?

• A. Open the upper and lower ejector levers of the active board at the same time.
• B. Deliver the active/standby switchover command.
• C. Perform a cold reset on the cross-connect or clock board.
• D. Delete the active cross-connect board or clock board logically.

NO.231 Which of the following methods can be used to analyze faults in the NG WDM system?

• A. Replacement
• B. Service Signal Flow Analysis
• C. Loopback
• D. RMON

NO.232 Which of the following is not a PW APS switching condition?

• A. MPLS_PW_SF
• B. A warm reset is performed on the board.
• C. A cold reset is performed on the board.
• D. The board software is faulty.

NO.233 Which of the following trails can be configured on the NMS.

• A. client
• B. OTS
• C. ODUk
• D. OCh

NO.234 The troubleshooting methods that can be used to separate external faults are:

• A. Configuration Data Analysis
• B. Loopback
• C. Replacement
• D. Meter Test

NO.235 Which of the following statements about AU pointers are correct?

• A. The value of the AU-PTR pointer is placed in the last 10 bits of the HI and H2 bytes. Therefore, the valid value of the AU-PTR pointer is 0-1023.
• B. If the receive end detects that the H1H2 bytes are "1", the local end generates the AU-AIS alarm.
• C. AU-PTR indicates the position of the JO byte.
• D. The root cause of the AU pointer justification is that the clocks of the upstream and downstream stations are not synchronized.

NO.236 ESC can also be used at OLA sites.

• A. False
• B. True

NO.237 Before querying bit errors and optical power on the U2000, you need to perform the ( ) operation. Otherwise, the corresponding data cannot be queried.

• A. Creating the logical fiber
• B. Enabling the NE Performance Monitoring Time
• C. Synchronizing NE data
• D. Configuring data

NO.238 If the LED indicator value on the SCC board of the OSN 8800 T32 board is 11, which of the following is the subrack ID?

• A. Slave subrack 1
• B. Slave subrack 17
• C. Slave subrack 11
• D. Slave subrack 2

NO.239 Which of the following statements about Flexible ROADM is incorrect?

• A. The WSMD2 board supports the Flexible ROADM configuration.
• B. Flexible ROADM is compatible with existing networks.
• C. The Flexible grid technology can flexibly set bandwidth and support flexible bandwidth allocation and scheduling.
• D. Improves spectrum utilization and meets the requirements for flexible scheduling in the 100 Gbit/s era.

NO.240 Which of the following is approximately equal to 100mw?

• A. 13dBm
• B. 15dBm
• C. 20dBm
• D. 10dBm