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NEW QUESTION 74
Which of the following ROADM boards have WSS optical modules?
- A. RDU9
- B. WSMD9
- C. WSM9
- D. WSD9
Answer: C
NEW QUESTION 75
The following description of the connection of the NG WDM device to the network management computer, which is wrong?
- A. If the subrack connection mode is master-slave mode, the network management computer must be connected to the main subrack.
- B. All network element IP addresses must be in the same address segment as the network management computer IP address.
- C. The connection network management computer can be connected either directly or through a local area network, as the case may be.
- D. Only the gateway network element needs to be connected to the network management computer.
Answer: B
NEW QUESTION 76
The main function of the transport layer in the Huawei ECC protocol stack is _____.
- A. Provide data communication services.
- B. Establish and maintain a MAC connection between neighboring network elements.
- C. Provide end-to-end communication services to the upper layer
- D. Establish and maintain an ECC routing table.
Answer: C
NEW QUESTION 77
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-BPSK.
- B. The modulation technology used in a 100G coherent system is ePDM-QPSK.
- C. The modulation technology used in a 40G coherent system is ePDM-BPSK.
- D. The modulation technology used in a 40G coherent system is ePDM-QPSK.
Answer: B
NEW QUESTION 78
Before creating an optical cross-connection, you need to manually configure the corresponding port of the corresponding board as a boundary port, for example, the line-side port of the FIU board between two sites.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 79
The service types supported by the PND2 board used by the OSN 8800 are: (Multiple choice)
- A. VPWS
- B. EPL
- C. VPLS
- D. EPLAN
Answer: A,C
NEW QUESTION 80
When creating an electric layer path, one RX/TX port can only establish a connection with one optical channel of the clientLP port.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 81
The basic principles of STP device fault location are? (Multiple choice)
- A. First advanced, then low level
- B. First low speed, then high speed
- C. First external, then transfer
- D. First network, then network element
Answer: A,C,D
NEW QUESTION 82
After starting the extended SSM protocol, in addition to determining the clock quality level and priority, the clock ID is also determined. After receiving the clock signal with the ID, the network element considers that the source is unavailable if it is judged to be the clock signal sent by the station. In this way, even after passing through multiple sites, the network element can still recognize the clock signal sent by itself, preventing the formation of a timing loop.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 83
Which of the following are limitations of the alarm and performance analysis methods? (Multiple Choice)
- A. In the case of complex networking, service, and fault information, many alarms and performance events may occur along with the occurrence of faults. Due to too many reports and performance events, maintenance personnel are unable to analyze.
- B. The network administrator cannot obtain the current notifications of the device, the alarm occurrence time, and the historical alarm of the device.
- C. Field maintenance personnel cannot understand the current operating condition of the equipment.
- D. When some faults occur, there may be no obvious alarms or performance events reported, and sometimes no alarms or performance events are found.
Answer: A,D
NEW QUESTION 84
On the ROADM board, you need to configure the virtual optical layer service before the optical power is commissioned. Otherwise, the ROADM limit board blocks all wavelengths by default.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 85
Which of the following alarms will trigger the optical line protection switching? (Multiple choice)
- A. R_LOS
- B. MUT_LOS
- C. POWER DIFF_OVER
- D. R_LOF
Answer: B,C
NEW QUESTION 86
ODUk SNCP protection cannot be automatically switched. The possible reasons are: (Multiple Choice)
- A. SNCP type setting error
- B. Waiting for the recovery time to be set too long
- C. Set the lock or forced switch command
- D. Electrical cross configuration error
Answer: A,B,C,D
NEW QUESTION 87
Which of the following is a part of the optical layer in the OTN frame structure? (Multiple Choice)
- A. OCh
- B. OMS
- C. OPUk
- D. ODUk
Answer: A,B
NEW QUESTION 88
Which of the following OTN trails does not need to be manually configured on an ROADM site, and can search out directly?
- A. OCh
- B. OMS
- C. OTS
- D. OSC
Answer: A
NEW QUESTION 89
The following description of the alarm, which is correct? (Multiple choice)
- A. OTUK-TIM: The OTUK trace identifier is the TTI (Trail Trace Identifier) mismatch. This alarm is generated if the trace identifiers of the peer end and the local end do not match and the TIM detection is enabled during the control process. Compare the API (Access Point Identifiers) in the input signal with the desired API.
- B. OTUk-LOM: Multi-frame alignment signal abnormal alarm, multi-frame positioning processing continues the multi-frame out-of-synchronization (o0M) state for 3ms, generating OTUelom alarm.
- C. OTUKAIS: OTUK alarm indication signal, the AIS signal is transmitted downstream, indicating that the upstream detected signal is invalid.
- D. OTUKBDI: OTUk backwards indication alarm. When the signal detected by the SM segment fails, the value of the BDI byte is 1, and the alarm is reported.
Answer: A,B,C,D
NEW QUESTION 90
Which of the following statements about AU pointers are correct?
- A. If the receive end detects that the H1H2 bytes are "1", the local end generates the AU-AIS alarm.
- B. AU-PTR indicates the position of the JO byte.
- C. The root cause of the AU pointer justification is that the clocks of the upstream and downstream stations are not synchronized.
- D. 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.
Answer: D
NEW QUESTION 91
Two PIU/APIU boards use the hot backup mode to supply power to the system on the OSN 1800 device, when a PIU/APIU board fails, the system can still work normally.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 92
The shortcomings of traditional OTDR meters in measuring optical fibers are: (Multiple choice)
- A. Manual interpretation is required, which requires high operator requirements
- B. Need inbound measurement
- C. Business will be interrupted during measurement
- D. Cannot be used for routine maintenance testing
Answer: A,B,C,D
NEW QUESTION 93
Which of the following protections need to use the APS protocol? (Multiple Choice)
- A. ODUk SNCP protection
- B. ODUk ring network protection
- C. SW SNCP protection
- D. 1:1 optical line protection
Answer: B,D
NEW QUESTION 94
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