Updated Sep-2021 Test Engine to Practice Test for H31-311-ENU Exam Questions and Answers!
HCIA-Transmission(Huawei Certified ICT Associate-Transmission) Certification Sample Questions and Practice Exam
NEW QUESTION 59
In the case of SNCP, a line board selectively receives services. Therefore, the SNCP can protect the services on the line.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 60
MSP is a network-level protection scheme. The MSP does not directly protect a service, and the MSP switching and restoration are not affected even if there is no service on the MSP ring.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 61
The 1310 nm and 1550 nm transmission windows are low-loss windows. In DWDM systems, only the 1550 nm transmission window is used.
Which of the following is the major cause?
- A. The 1550 nm wavelength area is applicable to long-haul transmission.
- B. The working wavelength flatness area of the EDFA is included in this window.
- C. None of the above
- D. The non-linear effect of the 1550 nm wavelength area is small.
Answer: B
NEW QUESTION 62
Frame-Mapped GFP (GFP-F) is a processing mode oriented to data coding blocks (such as Fiber Channel and ESCON).
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 63
Which of the following effects is used by the Raman amplifier?
- A. Four-wave mixing (FWM)
- B. Dispersion
- C. Self-phase modulation (SPM)
- D. Raman scattering
Answer: D
NEW QUESTION 64
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 65
For the (local) HA solution where the active and standby servers are deployed in the same place, which of the following platforms can be deployed? (Multiple Choice)
- A. Windows
- B. Solaris
- C. SUSE Linux
- D. All of the above
Answer: B,C
NEW QUESTION 66
Which of the following is the impact of changing the NE ID of OSN 3500 on the NMS?
- A. The NE time is not synchronized.
- B. The device is restarted.
- C. NE communication is interrupted.
- D. Services are interrupted.
Answer: C
NEW QUESTION 67
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 68
The device IP addresses of the gateway NE and non-gateway NEs must be set in the same network segment.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 69
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 70
The STAT indicator of an SDH board is blinking red, on for 100 ms and off for 100 ms.
Which of the following is the meaning of the indicator status?
- A. Normal operating
- B. Hardware mismatch
- C. Hardware fault
- D. No power supply input
Answer: B
NEW QUESTION 71
Which of the following statements about an MSP ring are correct? (Multiple Choice)
- A. When creating a protection subnet, select SDH NEs only. Do not select REG or WDM NEs.
- B. "Assigned by VC4" means that different VC4s are assigned to different protection subnets to achieve MSP only in some channels.
- C. The number of nodes on an MSP ring cannot exceed 16.
- D. When multiple protection subnets occupy the same port on the same board, you must select "Resource Sharing".
Answer: A,B,C,D
NEW QUESTION 72
The interval between two adjacent pointer justification events is at least () frames.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 73
Which of the following are basic functions of the U2000? (Multiple Choice)
- A. Alarm management
- B. Security management
- C. Topology management
- D. Performance management
Answer: A,B,C,D
NEW QUESTION 74
Which of the following are communication quality alarms? (Multiple Choice)
- A. No login of an NE user
- B. Optical port loopback
- C. Loss of optical signals
- D. NE communication interruption
Answer: C,D
NEW QUESTION 75
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. When the BER is constant, the OSNR saved by the correction encoding is called encoding gain.
- C. The encoding gain of the in band FEC is larger than that of the outband FEC.
- D. The error correction capability of FEC increases with the encoding gain.
Answer: C
NEW QUESTION 76
Which of the following can be configured as the monitoring time of NE performance events?
- A. Any time
- B. Earlier than the current time
- C. Same as the current time of the NE
- D. Later than the current time
Answer: D
NEW QUESTION 77
Optical fiber loss includes the bending loss, absorption loss, and scattering loss.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 78
Configuring an EPLAN service as a ring is not recommended. If the EPLAN service is configured as a ring, the STP protocol must be enabled on the network to prevent broadcast storms.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 79
In the system control unit, which of the following databases do not lose data after a power failure? (Multiple Choice)
- A. MDB
- B. FDB1
- C. DRDB
- D. FDB0
Answer: B,D
NEW QUESTION 80
The clock unit can access an external clock source as the timing signal source of the system only through the external clock interface. In addition, it can output the processed clock and provide the clock source for other devices that require timing.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 81
Which of the following factors determines that the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent After signals are transmitted for a certain distance in a WDM system, the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent.
Which of the following is the main cause?
- A. EDFAs are used.
- B. Multiplexers and demultiplexers are used.
- C. Fiber attenuation is excessively high.
- D. New types of optical fibers are not used.
Answer: A
NEW QUESTION 82
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