Download the Latest H31-311 Dumps - 2021 H31-311 Exam Questions
Latest Huawei H31-311 Certification Practice Test Questions
Huawei H31-311 Exam Syllabus Topics:
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NEW QUESTION 31
Optical fiber loss includes the bending loss, absorption loss, and scattering loss.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 32
Which of the following statements about the 1+1 protection of cross-connect boards are correct? (Multiple Choice)
- A. After service cross-connections are completed, the active and standby cross-connect boards send the data of the active cross-connect board to the sink service board.
- B. The dual-bus system structure indicates that the service board performs dual feeding of data to the cross-connect side and selective receiving of the data on the cross-connect side.
- C. The source service board sends services to the active and standby cross-connect boards.
- D. Two cross-connect boards have the same configuartion. Service boards will selectively receive services from one of them based on the quality of services and status of cross-connect boards.
- E. The sink service board can receive only the data from the active cross-connect board.
- F. The buses of the two cross-connect modules work independently and do not interfere with each other.
Answer: B,C,D,F
NEW QUESTION 33
On the NMS, the NE performance monitoring time is set to () minutes and () hours,
- A. 30, 12
- B. 15, 24
- C. 15, 12
- D. 30, 24
Answer: B
NEW QUESTION 34
The receive end performs BIP-8 check for the unscrambled STM-16 frame. If the BIP-8 check result XOR the value of the B1 byte contained in the following STM-16 frame is 10001100, it indicates that () bit error blocks exist in the STM-16 frame.
- A. 0
- B. Unclear
- C. 1
- D. 2
Answer: D
NEW QUESTION 35
The interval between two adjacent pointer justification events is at least ( ) frames.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION 36
The value of the MFAS byte increases with the sequence number of the OTUk/ODUk base frame, and a maximum of ( ) base frames are included.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 37
The error correction capability of FEC is measured with the encoding gain. Which of the following statements about the encoding gain is incorrect?
- A. The encoding gain of AFEC is larger than that of FEC.
- B. The encoding gain of the inband FEC is larger than that of the outband FEC.
- C. The error correction capability of FEC increases with the encoding gain.
- D. When the BER is constant, the OSNR saved by the correction encoding is called encoding gain.
Answer: B
NEW QUESTION 38
In the case of SNCP, a line board selectively receives services. Therefore, the SNCP can protect the services on the line.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 39
In ITU-T G.692 recommendations, the allowed channel frequency is based on the reference frequency ( ) and the channel spacing can be 100 GHz, 50 GHz, or 25 GHz.
- A. 194.1 THz
- B. 192.1 THz
- C. 196.1 THz
- D. 193.1 THz
Answer: D
NEW QUESTION 40
An arrayed waveguide grating (AWG) multiplexer/demultiplexer has the following advantages: short wavelength spacing, large number of channels, and flat passband. It suits DWDM systems with ultra-high speed and large capacity.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 41
Which of the following ITU-T recommendations defines the OTN frame structure?
- A. G.652
- B. G.694
- C. G.709
- D. G.975
Answer: C
NEW QUESTION 42
Forced switching, fiber cut switching, manual switching, and exercise switching are in the descending order of priority.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 43
MAC loopback and PHY loopback are used for fault locating. When the MAC loopback is set to an inloop, you can set the PHY loopback according to the actual situation.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 44
The U2000 can be flexibly interconnected with different third-party NMSs through northbound interfaces (NBIs), and provides information about physical inventory and alarms to the upper-layer NMSs.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 45
TU-AIS is frequently encountered during network maintenance. Which of the following alarms can trigger the TU-AIS alarm? (Multiple Choice)
- A. AU-LOP
- B. R-LOS
- C. B2-EXC
- D. HP-TIM
Answer: A,B,C,D
NEW QUESTION 46
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. FALSE
- B. TRUE
Answer: B
NEW QUESTION 47
Which of the following statements about an MSP ring are correct? (Multiple Choice)
- A. The number of nodes on an MSP ring cannot exceed 16.
- B. When multiple protection subnets occupy the same port on the same board, you must select "Resource Sharing".
- C. When creating a protection subnet, select SDH NEs only. Do not select REG or WDM NEs.
- D. "Assigned by VC4" means that different VC4s are assigned to different protection subnets to achieve MSP only in some channels.
Answer: A,B,C,D
NEW QUESTION 48
Which of the following can be the center wavelengths of the pump sources in an EDFA? (Multiple Choice)
- A. 1510 nm
- B. 1480 nm
- C. 1310 nm
- D. 980 nm
Answer: B,D
NEW QUESTION 49
An unprotected chain consists of four NEs: NE1, NE2, NE3, and NE4. An end-to-end VC4 trail NE1-NE4 is created, and NE5 is added between NE2 and NE3 for capacity expansion. The original configuration remains unchanged, and no service is configured on NE5. In this case, the unprotected chain becomes NE1-NE2-NE5-NE3-NE4, and how many VC4 trails can be searched out?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION 50
When the transmit end detects that the b6-b8 of the K2 byte is 110, it indicates that the () alarm is reported at the transmit end.
- A. R-LOS
- B. MS-RDI
- C. R-LOF
- D. MS-AIS
Answer: A,C,D
NEW QUESTION 51
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