Which of the following functions is added to EX40 compared with X40?
A. Monitors the optical power of a single channel.
B. Supports optical-layer cross-connections.
C. Fewer slots are occupied.
D. More multiplexed and demultiplexed wavelengths
Which of the following statements about the modulation technologies of the 40Gbit/s and 100Gbit/s coherent systems are correct?
A. The modulation technology used in a 100G coherent system is ePDM-QPSK.
B. The modulation technology used in a 40G coherent system is ePDM-BPSK.
C. The modulation technology used in a 40G coherent system is ePDM-QPSK.
D. The modulation technology used in a 100G coherent system is ePDM-BPSK.
When creating new NE, which of the following Configuration Mode can be selected?
A. Initialize and Manually Configure NE Data
B. Download
C. Upload
D. Copy NE Data
Before the optical power commissioning of an ROADM board, you need to configure virtual optical-layer services. Otherwise, the ROADM board blocks all wavelengths by default.
A. True
B. False
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. Delete the active cross-connect board or clock board logically.
B. Open the upper and lower ejector levers of the active board at the same time.
C. Deliver the active/standby switchover command.
D. Perform a cold reset on the cross-connect or clock board.
In the scenario where the non-convergence OTU processes OTN standard signals, both A and B are WDM sites. After receiving the OTUk_TIM alarm on the client side, the OTU board at station A sends the OTUk_BDI alarm to the upstream. When the TIM follow-up action is disabled, the alarm is no longer transmitted to the downstream. When the TIM follow-up action is enabled, an SF event is generated. The WDM side of the OTU board at station B reports the ODUk_PM_AIS alarm, and the ODUk_PM_AIS alarm is transmitted to the downstream. The client equipment reports this alarm. After the WDM side of the OTU board at station B receives the OTUk_TIM alarm and the TIM follow-up action is disabled, the alarm is no longer transmitted to the downstream. When the TIM follow-up action is enabled, an SF event is generated. After the client side of station B processes the SF event, the client equipment reports the ODUk_PM_AIS alarm.
A. True
B. False
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 A reports a ODU2_PM_LCK minor alarm.
D. Site C reports a ODU2_PM_BDI minor alarm.
The OSN 1800V supports the following packet protection features:
A. Tunnel APS
B. LAG
C. TPS
D. PW APS
Which of the following statements about AU pointers are correct?
A. The root cause of the AU pointer justification is that the clocks of the upstream and downstream stations are not synchronized.
B. AU_PTR indicates the position of the J0 byte.
C. If the receive end detects that the H1H2 bytes are "1", the local end generates the AU-AIS alarm.
D. The value of the AU-PTR pointer is placed in the last 10 bits of the H1 and H2 bytes. Therefore, the valid value of the AU-PTR pointer is 0~1023.
The causes of discrete services are as follows:
A. The cross-connection configuration on the NE is incorrect.
B. The logical fiber connection of the NE is inconsistent with the physical fiber connection.
C. The configuration data on the NE side is not uploaded to the U2000.
D. A subnet service whose source or sink port is not in the management scope of the U2000 is available.