QUESTION 27
In the packet mode of Huawei Hybrid MSTP equipment, which Ethernet services are supported? (multiple choice)

QUESTION 28
What are the limiting factors of CES ACR synchronization? (multiple choice)

QUESTION 29
ODUk_PM_AIS alarm is one of the conditions for ODUK_SNCP switching

QUESTION 30
According to the requirements, before OTN 6800/8800 equipment is upgraded, it is necessary to return the network element health check file to TAC analysis

QUESTION 31
GetEventChannel belongs to which step in the working principle of CORBA?

QUESTION 32
NSF (Non-Stop Forwarding) means that when a certain type of equipment fails, data forwarding is still performed normally to protect the key business functions on the network. In the following scenarios, which NSF function cannot perform data forwarding normally?

QUESTION 33
Drift refers to the long-term phase change of the digital signal relative to the standard signal less than 10 Hz, and jitter refers to the short-term phase change of the digital signal relative to the standard signal greater than 10 Hz.

QUESTION 34
When configuring client-side 1+1 protection, if the working OTU and the protection OTU are on different network elements, the control channel board type can be OLP or SCS board

QUESTION 35
When configuring the dual-stage amplifier board of RAU+OAU, which position of the DCM module is recommended in the following figure is the best

QUESTION 36
Two SNCP rings intersect. For cross-ring services, the configuration of intersecting nodes is particularly important. In order to achieve the best protection effect, each intersecting node needs to be configured with 1 unidirectional cross-connection and 2 pairs of SNCP protection groups.

QUESTION 37
Regarding the M40 and D40 channel isolation indicators of OSN 8800/6800 devices, which of the following statements is correct? () (multiple choice)

QUESTION 38
What should be paid attention to when planning a 1588V2 network?

QUESTION 39
It is known that N*PTN sites are interconnected through WDM network. At this time, which of the following interface networking will not be used?

QUESTION 40
All on-site operations can be performed according to their own experience, and there is no need to strictly follow the change operation steps

QUESTION 41
The single-fiber bidirectional optical interface of PTN equipment distinguishes upstream and downstream service flows according to time slots.

QUESTION 42
The ring network of the OSN6800 equipment group was newly opened, and ODU1-SNCP/N protection was enabled. The engineer reported that a switch occurred one day and has not been restored, but there is no problem with the optical cable. There is an ODU_SNCP_PS alarm on the corresponding ND2 optical port. The possible reasons are:

QUESTION 43
After a maintenance person failed to start the CORBA interface, he listed several inspection steps.
1. View the log file “%IMAPROOT%/servervarlogsDevelopnbiAgent_CORBAunbi_sys_yyyyMMdd_hhmmss_*.log”;
2. Check whether the U2000 License file supports the U2000 CORBA interface function;
3. Check if the %IMAPROOT%/server/ns.ior file is deleted. Is his operation correct?

QUESTION 44
In the network management planning process, which item is not completely necessary?

QUESTION 45
What’s wrong with the description of the 1+1 protection on the client side?