H31-311 Braindumps PDF, Huawei H31-311 Exam Cram
New 2022 H31-311 Sample Questions Reliable H31-311 Test Engine
NEW QUESTION 47
When severely errored seconds (SESs) are present in the PM section at the ODUk layer, which of the following alarms is reported on the NMS?
- A. ODUk _PM _UAS
- B. ODUk_PM_SES
- C. ODUk_PM_SESR
- D. ODUk_PM_ES
Answer: B
NEW QUESTION 48
The error correction capability of FEC is measured with the encoding gain. Which of the following statements about the encoding gain is incorrect?
- A. When the BER is constant, the OSNR saved by the correction encoding is called encoding gain.
- B. The encoding gain of AFEC is larger than that of FE
- C. The error correction capability of FEC increases with the encoding gain.
- D. The encoding gain of the inband FEC is larger than that of the outband FE
Answer: D
NEW QUESTION 49
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 50
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. 1
- C. Unclear
- D. 2
Answer: B
NEW QUESTION 51
The SP3D board supports 63 El services.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 52
On the NMS, the NE performance monitoring time is set to () minutes and () hours,
- A. 15, 12
- B. 30, 12
- C. 15, 24
- D. 30, 24
Answer: C
NEW QUESTION 53
Which of the following effects is used by the Raman amplifier?
- A. Self-phase modulation (SPM)
- B. Four-wave mixing (FWM)
- C. Dispersion
- D. Raman scattering
Answer: D
NEW QUESTION 54
The EPL service exclusively uses bandwidth on the line, which is highly secure. It is applicable to the private line application of VIP customers.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 55
Only one TCM can be used at a site.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 56
Which of the following can be configured as the monitoring time of NE performance events?
- A. Same as the current time of the NE
- B. Earlier than the current time
- C. Later than the current time
- D. Any time
Answer: C
NEW QUESTION 57
Which of the following bridges is used to forward data based on the MAC address and VLAN ID carried in data?
- A. 802.11ab
- B. 802.1q
- C. 802.1a
- D. 802.1d
Answer: B
NEW QUESTION 58
Which of the following overhead bytes needs to be processed at an electrical regeneration site?
- A. All of the above
- B. TCM
- C. PM
- D. SM
Answer: A
NEW QUESTION 59
Which of the following overheads is not an ODUk overhead?
- A. APS/PCC
- B. TCM
- C. PM
- D. NJO
Answer: D
NEW QUESTION 60
When a working PQ1 board is faulty, the device performs TPS protection switching. Which of the following statements about the switching process are correct? (Multiple Choice)
- A. The D75S board responds to the switching message by transferring services to the shared protection bus and stopping sending services to the faulty PQ1 board.
- B. The protection PQ1 board receives and processes the services that are transferred from the D75S board to the protection bus to complete the protection switching.
- C. The cross-connect board detects that the PQ1 board is faulty through the board status bus.
- D. If the protection PQ1 board is normal, the cross-connect board sends a switching message to the D75S corresponding to the faulty PQ1 board through the switching control bus.
Answer: A,B,C,D
NEW QUESTION 61
Which of the following is not the northbound interface provided by the U2000?
- A. XML
- B. SNMP
- C. Qx
- D. CORBA
Answer: C
NEW QUESTION 62
Which of the following can be the center wavelengths of the pump sources in an EDFA? (Multiple Choice)
- A. 1510 nm
- B. 980 nm
- C. 1310 nm
- D. 1480 nm
Answer: B,D
NEW QUESTION 63
Which of the following is the functional unit that provides high-speed signal interfaces and processes corresponding signals?
- A. Tributary unit
- B. Auxiliary unit
- C. Cross-connect unit
- D. Line unit
Answer: D
NEW QUESTION 64
OChr means that the electrical supervisory technology is used.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 65
The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 66
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. TRUE
- B. FALSE
Answer: A
NEW QUESTION 67
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