[Oct-2021] H31-311-ENU Pre-Exam Practice Tests | Exam Questions and Answers for Huawei-certification Study Guide
HCIA-Transmission(Huawei Certified ICT Associate-Transmission) Certification Sample Questions
NEW QUESTION 14
For an OSN 3500, which of the following boards provides the centralized backup function for the +3.3 V power supply of each board in the subrack?
- A. AUX
- B. SCC
- C. COA
- D. PIU
Answer: A
NEW QUESTION 15
Which of the following statements about the sequence of a signal flow between the SDH interface and the cross-connect unit is correct?
- A. SPI<>MST<>RST<>MSA<>MSP<>HPT
- B. SPI<>RST<>MST<>MSP<>MSA<>HPT
- C. SPT<>MST<>MSA<>RST<>MSP<>HPT
- D. SPI<>RST<>MSA<>MSP<>MST<>HPT
Answer: B
NEW QUESTION 16
The single-fiber bidirectional WDM system uses only one optical fiber to transmit optical signals in two directions at the same time. The optical signals in the two directions should be arranged at different wavelengths.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 17
Which of the following working windows is indicated by "2" in the optical module parameter "L-64.2"?
- A. 880 nm
- B. 1310 nm
- C. 1550 nm
- D. 1510 nm
Answer: C
NEW QUESTION 18
Which of the following logical functional modules are involved in processing clock signal? (Multiple Choice)
- A. SPI
- B. SETS
- C. RST
- D. MCF
Answer: A,B
NEW QUESTION 19
Some of the SNCP protection switching conditions are default, such as AU-AIS and TU-AIS. Others conditions are optional, such as HP-TIM and HP-SLM. The optional conditions can be flexibly set based on service levels.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 20
Which of the following overheads is not an ODUk overhead?
- A. APS/PCC
- B. NJO
- C. PM
- D. TCM
Answer: B
NEW QUESTION 21
The coherent receiver technology uses the local oscillator laser that has the same frequency as the received signals to perform coherent processing and recovers the ( ) information from the received signals. (Multiple Choice)
- A. Frequency
- B. Phase
- C. Polarization state
- D. Amplitude
Answer: B,C,D
NEW QUESTION 22
When an optical fiber between node A and node B is broken, the RU on node B detects the OTS_LOS alarm and inserts the OTS_BDI alarm to node A.
The RU on node A reports the OTS_BDI alarm. The line board on the downstream C node reports the OCh_SSF alarm.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 23
In the frame structure of SDH signals, there are abundant overhead bytes used for operation, administration, and maintenance (OAM). The overhead bytes account for ( ) of all bits in the entire frame and greatly enhance the monitoring functions of the network.
- A. 1/10
- B. 1/40
- C. 1/30
- D. 1/20
Answer: D
NEW QUESTION 24
When LMSP is configured, there are two switching modes: single-ended switching and dual-ended switching. The protection protocol does not need to be enabled for single-ended switching.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 25
A PAUSE frame uses a reserved multicast address and is not forwarded by a bridge or switch. In this way, the PAUSE frame does not generate any additional information.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 26
Which of the following alarm/event dumping modes are supported by the U2000? (Multiple Choice)
- A. Automatic dumping
- B. Manual dumping
- C. Overflow dumping
- D. Periodic dumping of alarm logs
Answer: B,C,D
NEW QUESTION 27
Which of the following device domains can be managed by the U2000? (Multiple Choice)
- A. Access device
- B. Data communication device
- C. Transport device
- D. Wireless device
Answer: A,B,C,D
NEW QUESTION 28
Which of the following are the device-level protection schemes of SDH products? (Multiple Choice)
- A. Cross-connect and timing board protection
- B. Power supply protection
- C. TPS protection
- D. System control board protection
Answer: A,B,C,D
NEW QUESTION 29
The working mode of a port determines the flow control mode of the port.
When the working mode is 100 Mbit/s full duplex, which of the following flow control modes can be used?
- A. Auto-negotiation flow control mode
- B. None of the above
- C. Non-auto-negotiation flow control mode
- D. Both of the above
Answer: C
NEW QUESTION 30
Only one TCM can be used at a site.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 31
On the NMS, the NE performance monitoring time is set to ( ) minutes and ( ) hours.
- A. 30, 12
- B. 15, 12
- C. 30, 24
- D. 15, 24
Answer: D
NEW QUESTION 32
SES: There are 5% or more than 5% bit error blocks or at least one defect (OCI/AIS/LCK/IAE/LTC/TIM/PLM) within one second.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 33
For the OSN 3500, there is a slot mapping relationship between processing boards and interface boards. The processing board in slot 1 maps to the interface board in slot 19-20.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 34
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