[Nov 11, 2022] H12-931-ENU Exam Brain Dumps - Study Notes and Theory
Pass Huawei H12-931-ENU Test Practice Test Questions Exam Dumps
NEW QUESTION 80
An ETH_LOS or LINK_ERR alarm occurs on a single Ethernet port of a multi-interface Ethernet board, and the service is interrupted.The possible reasons are: the working mode of the Ethernet port is not matched or the interface rate is inconsistent, the optical module hardware is faulty, and the possible reasons are?
- A. SDH line VC4 channel failure
- B. MTU parameter setting is too small
- C. Ethernet port attribute setting error
- D. Optical fiber connection error
Answer: D
NEW QUESTION 81
The function of PW OAM is basically the same as that of Tunnel. The PW OAM mechanism can effectively detect, confirm and locate defects and faults originating from the PW layer network.
Which of the following functions are not available in PW OAM?
- A. BDI
- B. FDI
- C. LB
- D. Ping
Answer: D
NEW QUESTION 82
When relocating the OLA site (10G system), which of the following descriptions are wrong
- A. The relocation distance has changed and the system signal-to-noise ratio needs to be reassessed
- B. There is no need to adjust the optical power of upstream and downstream sites in the network management during the relocation process
- C. The relocation distance has changed, and the system dispersion needs to be re-evaluated
- D. The relocation distance has changed, and the optical power of the line needs to be reassessed
Answer: B
NEW QUESTION 83
In the Solaris dual-system hot backup system, using "ls -l" to query the file1 file information is "-rwxr-xr-- 2wjm newservice 321 Oct 17 09: 33 file1" The following statement is wrong ()
- A. Characters 2-4 "rwx": indicates that the file owner wjm's rights to file1 are readable, writable and executable
- B. The fifth field "321": indicates that the size of the file is 321kb
- C. Characters 5-7 "rx": indicates that the rights of all users in this user group newservice to the file file1 are: readable, not writable, executable
- D. The 8th-10th character "r--": indicates that the rights of other users to file1 are readable, not writable, and not executable"
Answer: B
NEW QUESTION 84
Hybrid MSTP devices support cross-domain clock intercommunication, and support the intercommunication of synchronous Ethernet and SDH synchronization.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 85
Is the following statement about the ISU2 board of the RTN 900 wrong?
- A. Support Native STM-1 + Ethernet mixed mode
- B. Support MPLS and PWE3
- C. Support XPIC function
- D. Support E1 priority
Answer: C
NEW QUESTION 86
In the process of U2000 network management searching for paths, the path search management module first scans the cross-connections of each network element, constructs sub-paths based on the cross-connections of adjacent network elements, and tries to merge these sub-paths.Which of the following sub-paths are legal?
- A. The sub-path forms a loop
- B. The path does not go through the fiber
- C. The source and sink are not the end point of the sub-path or the optical port out of the subnet
- D. The sub-path ends on the pre-configured network element
Answer: D
NEW QUESTION 87
The insertion loss of the 40 sub-wavelength channels of D40 is 6dB, regardless of the influence of noise, when the signal is full-wave, the IN port optical power of D40 is X dBm. If the optical power of the IN port is reduced by 1dB, The measured value is () dBm. (Assuming that the optical power of each channel is balanced, lg40=1.6)
- A. (X-23)
- B. (X-6)
- C. (X-22)
- D. (X-5)
Answer: A
NEW QUESTION 88
The upgrade from GACSA to UXCSB for OSN 3500 equipment is as follows:
1. Replace the spare cross-connect board
2. Switching between active and standby cross-connect boards
3. Replace the original main cross board
4. Data consistency check
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 89
OTN and SDH are connected, which of the following is the reason for the connection failure (multiple choice)
- A. Line failure between WDM equipment and SDH equipment
- B. WDM product docking board interface client side parameter configuration error
- C. OTN host version is too low
- D. The wave branch circuit is multi-mode, and the SDH line is single-mode
Answer: A,B,D
NEW QUESTION 90
As shown in the figure, in the business configuration of the PP ring belt chain, discrete services are generated due to incomplete or incorrect configuration. In order to solve this discrete service, the service configuration needs to be supplemented. Which of the following steps are correct? (More select)
- A. ADM3 is not configured for optional reception, configure it directly on U2000
- B. Create a one-way collusion service on U2000 for a single station of ADM2 site
- C. Create a two-way collusion service on U2000 for a single station of ADM2 site
- D. ADM3 site is not configured with optional receiving, you need to delete the working receiving and configure it again
Answer: B,D
NEW QUESTION 91
The existing network needs to be transformed into 1+1 line protection of OMS, the following description is correct (multiple choice)
- A. The configuration of the amplifier board of the main and standby channels can be different
- B. OLP single board needs to use high-power single board
- C. The distance between the main and backup channels is within 10KM
- D. The line attenuation deviation of the main and backup channels is within 3dB
- E. The dispersion compensation of the main and backup channels can be different
Answer: A,B,E
NEW QUESTION 92
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?
- A. ATM STM-1
- B. FE
- C. POS
- D. Ch STM-1
- E. 10GE
- F. GE
Answer: A
NEW QUESTION 93
The following description of OLP optical line protection is wrong:
- A. Protection principle: dual-transmit and selective-receive, single-ended switching, non-recovery by default;
- B. Switching conditions: MUT_LOS/POWER-DIFF-OVER;
- C. APS protocol; no need for the whole network protocol;
- D. When configuring protection, the transceiver of the first port (TO1/RI1) can be configured to work or protection;
Answer: D
NEW QUESTION 94
What's not a trivial task for ASON's business recovery is
- A. Downgrade to traditional business reconstruction and restoration
- B. Forced reactivation to restore
- C. Download network element database recovery
- D. Optimize to other path recovery
Answer: C
NEW QUESTION 95
All on-site operations can be performed according to their own experience, and there is no need to strictly follow the change operation steps
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 96
Which of the following is correct for the FEC delay relationship ()
- A. The sender increases the overhead for encoding, and the receiver performs decoding, which will bring signal delay.
- B. 100GHFEC delay>40GAFEC delay
- C. 100GSDFEC delay (20%)>100GHFEC delay (7%)
- D. Typical value of AFEC delay of 40G coherent signal> Typical value of FEC delay
Answer: A,C,D
NEW QUESTION 97
For WDM network, the following description is correct (multiple choice)
- A. For 10G and 100G mixed transmission networks, you can use the performance of 10G to analyze the dispersion compensation of the system
- B. For 10G and 100G mixed transmission networks, you can use the performance of 100G to analyze the dispersion compensation of the system
- C. For the OAU board, the type of DGI module connected on site can be roughly judged based on the difference between the output of POUT and the input of BAIN
- D. For an OAU board, you can roughly judge the type of DCM module connected to the site according to the upper threshold of nominal gain (dB) on the network management system and the upper threshold of actual gain (dB)
Answer: B,D
NEW QUESTION 98
There are two types of E1 signals: Unframed E1 and Framed E1, among which Unframed E1 refers to all time slots as a whole to transmit user data.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 99
In the actual deployment of 1588v2, you will encounter asymmetry in the length of the transceiver fiber. What are the main solutions for fiber asymmetry in the industry? (multiple choice)
- A. Single fiber bidirectional
- B. The meter measures point by point
- C. Automatic measurement of ring network
- D. Manual measurement of ring network
Answer: A,B,C
NEW QUESTION 100
Which of the following descriptions about OTN turn on the electrical layer ASON is wrong?
- A. Need to enable the OSPF protocol status of ETH1 in the OSPF protocol status in the advanced maintenance menu;
- B. The network element with N-board relay also needs to turn on intelligence, and the N-board relay mode must be the normal line mode, and back-to-back crossing is required;
- C. The generation of TE link is affected by the alarm of the N board port. If it exists in LOS or OTU_LOF or the error code is serious, the TE link cannot be generated;
- D. TE link priority: work, protection, preset work, preset protection, other rerouteable resources; other rerouteable resources may also be the work, protection, preset work, preset protection of other services Path etc.;
Answer: A
NEW QUESTION 101
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:
- A. The business configuration is wrong, or there is redundant business crossing at the business source and sink;
- B. Related circuit board failure;
- C. The PM overhead of the related circuit board is set to "LCK Insert" as enable
- D. There is a minor alarm ODU1_PM_LCK on the relevant circuit board;
Answer: A,B,C,D
NEW QUESTION 102
Which of the following are the background reasons for the introduction of coherent communication ()? (multiple choice)
- A. For incoherent signals with a 40G data rate, a TDC module needs to be added to the receiving end, which has a slow response speed and does not support 1+1 protection scenarios, etc.
- B. When the baud rate is increased to 100Gbaud/s, the spectral width of the BPSK/DPSK pattern has exceeded 50GHz, and 50GHz interval transmission cannot be achieved
- C. The conventional 40G DQPSK PMD is only 6~8ps. After the rate is upgraded to 100G, the PMD tolerance will be reduced by more than half, and it cannot support long-distance non-relay transmission.
- D. The biggest technical difficulty of coherence lies in high-performance FEC coding, and high-performance FEC coding is available in 2011
Answer: A,B,C
NEW QUESTION 103
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