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Pass HCIP Transmission H31-341_V2.5 Exam With 122 Questions
NEW QUESTION # 32
Which of the following descriptions about the client-side 1+1 protection features is wrong?
- A. The working and protection wavelengths must be the same
- B. OTU client optical layer dual transmission and selective reception
- C. Protect the OTU single board and OCh optical fiber by occupying and protecting two wavelengths and using different routes for transmission
- D. Long application time and wide protection range
Answer: A
NEW QUESTION # 33
When VC-4 and AU-4, VC-12 and TU-12 have no frequency difference and phase difference, the value of AU-PTR is 522 and the value of TU-PTR is 70
- A. True
- B. False
Answer: A
NEW QUESTION # 34
Flex grid technology can flexibly adjust the center frequency of the liquid length by adjusting the occupied slice position.
- A. True
- B. False
Answer: A
NEW QUESTION # 35
Which of the following descriptions about PM_BIP8-related alarms is correct?
- A. The PM_BIlP8_DEG alarm indicates the signal degradation alarm of the PM section at the ODU layer.
- B. The PM_BIP8_SD alarm indicates the signal degradation alarm of the PM segment at the OTU layer.
- C. The PM_BIP8_OVER alarm indicates that the ODU layer PM bit error amount exceeds the limit alarm.
Answer: C
NEW QUESTION # 36
Regarding the reporting of the OTUk_BDI alarm, which of the following statements is wrong?
- A. The downstream station corresponding to the OTU board receives the OTUk_TIM
- B. Only the port on the WDM side will report oTUk_BDI
- C. The downstream station receives the OTUk_AIS corresponding to the OTU board
- D. The downstream station receives the OTUk_SSF corresponding to the OTU board
Answer: B
NEW QUESTION # 37
The frame structure size of the OTUk frame is variable.
- A. False
- B. True
Answer: A
NEW QUESTION # 38
The OLA device is used in an optical amplification station; it amplifies the optical signals transmitted in two directions respectively. Which boards are required for OLA sites? (Multiple choice)
- A. OAU1
- B. ST2
- C. SFIU
- D. SCC
Answer: A,B,C,D
NEW QUESTION # 39
Which of the following statements about the B1 byte is correct? (Multiple choice)
- A. Descramble the signal and then check it
- B. When the local end detects a bit error, it does not send a report back to the opposite end
- C. The B1 byte uses the BIP-8 check method
- D. Up to 8 error blocks can be verified
Answer: B,C,D
NEW QUESTION # 40
Time division multiplexing can multiplex low-order ODUk signals to high-order ODUk signals. Which of the following descriptions about the multiplexing relationship is wrong?
- A. Support multiplexing from 2×ODU0 to 1×ODU1
- B. Support multiplexing from 8×ODU0 to 1×ODU2
- C. Support multiplexing from 80×ODU0 to 1×ODU4
- D. Support multiplexing from 4×ODU2e to 1×ODU3
Answer: D
NEW QUESTION # 41
What are the functions completed by the SDH overhead bytes? (Multiple choice)
- A. Bit error detection
- B. Channel Tracking
- C. Pointer positive adjustment
- D. Frame alignment
Answer: A,B,D
NEW QUESTION # 42
NG WDM equipment uses Ethernet frames to carry MPLS packets
- A. True
- B. False
Answer: A
NEW QUESTION # 43
OTM nr.m consists of at most "n" optical multiplexing channels. Non-channel related overhead is not supported. The letter "r" indicates reduced functionality.
- A. True
- B. False
Answer: A
NEW QUESTION # 44
Which of the following descriptions about the 1+1 protection in the board are correct? (Multiple choice)
- A. Set the OTU as the detection unit, and electrical layer alarms such as OTUk_LOF and OTUK_LOM will also trigger switching
- B. In-board 1+1 protection can be applied to chain networking and ring networking
- C. For OSN 1800 equipment, the OTU with dual transmission and selective reception functions can be used to realize service protection
- D. The 1+1 protection within the board can realize the protection of the OTU single board
Answer: A,B,C
NEW QUESTION # 45
Which of the following statements about the delay test is wrong?
- A. The timing starts from the entry of the first bit of the data frame, and ends when the first bit of the data frame appears on the output terminal P. The time difference between the two is the delay of the bit forwarding device
- B. The delay is divided into the delay of the store-and-forward device and the delay of the bit-forward device. Huawei devices are all store-and-forward devices
- C. The timing starts from the entry of the first bit of the data frame, and ends when the first bit of the data frame appears on the output terminal P. The time difference between the two is the delay of the bit forwarding device
- D. During the delay test, the frame rate can be greater than the throughput
Answer: D
NEW QUESTION # 46
When the input optical power of the amplifier of the OAU at the receiving end is lower than the nominal optical power, which of the following operations are wrong?
- A. Set the OAU gain to make its output reach the nominal value
- B. Increase the sending optical power of the sending end
- C. When the input optical power cannot be increased by adjusting the adjustable attenuator, the adjustable attenuation at the input end of the amplifier should be suppressed
- D. Adjust the adjustable optical attenuation before the receiver amplifier to increase the input optical power of the amplifier
Answer: B
NEW QUESTION # 47
Which of the following effects was used in The Raman amplifier?
- A. Raman scattering
- B. Four Wave Mixing (FWM)
- C. Self-Phase Modulation (SPM))
- D. Disperse
Answer: A
NEW QUESTION # 48
Which of the following are the common test indicators for Ethernet services? (Multiple choice)
- A. Throughput
- B. Latency
- C. Frame loss rate
- D. back to back
Answer: A,B,C,D
NEW QUESTION # 49
The common methods for fault location of MSTP equipment can be simply summarized as which of the following?
- A. —Analysis, two board changes and three loops.
- B. One is to change the board, the other is to loop back, and the third is to analyze.
- C. First loop back, second board replacement, third analysis.
- D. First analysis, second loopback, third board replacement.
Answer: D
NEW QUESTION # 50
A VOA is configured on each wavelength path of a WSS board to adjust the____of optical signals to achieve flatness adjustment. (Enter only lowercase letters.)
Answer:
Explanation:
Power
Explanation:
A VOA (Variable Optical Attenuator) is configured on each wavelength path of a WSS (Wavelength Selective Switch) board to adjust the power of optical signals. This power adjustment is crucial to achieve flatness across channels by compensating for varying signal intensities. Without such adjustment, some wavelengths may overpower others, causing nonlinear effects and signal degradation. The VOA ensures that all wavelength channels have balanced power levels, improving signal quality and network reliability. This principle is fundamental in dense WDM networks and is emphasized in HCIP-Transmission studies focusing on optical layer signal integrity and amplification management.
NEW QUESTION # 51
NG WDM system fault analysis methods include signal flow analysis method, alarm analysis method, instrument test method, () and replacement method.
Answer:
Explanation:
Loopback method
NEW QUESTION # 52
Which of the following logical function blocks is used to generate an R-LOS alarm?
- A. MSA
- B. RST
- C. MST
- D. SPI
Answer: D
NEW QUESTION # 53
When the receivable TTI and the actual receipt TTI of the PM layer are inconsistent, which of the following statements about the reported alarm is wrong? (Multiple choice)
- A. ODUk_PM_TIM will be reported
- B. ODUk_PM_LOS will be reported
- C. ODUk_PM_LOF will be reported
- D. ODUk_PM_TTI will be reported
Answer: B,D
NEW QUESTION # 54
OTUk_DEG indicates OTUk signal degradation. Which of the following statements about the bit error detection mode are true? (Choose all that apply.)
- A. When bit errors are detected in Poisson mode, this alarm is reported after signal degradation occurs.
- B. When bit errors are detected in Poisson mode, this alarm is reported after signal degradation or bit error threshold crossing occurs.
- C. When bit errors are detected in burst mode, this alarm is reported after signal degradation or bit error threshold crossing occurs.
- D. When bit errors are detected in burst mode, this alarm is reported after signal degradation occurs.
Answer: C,D
Explanation:
In burst mode, an OTUk_DEG alarm is triggered when bit errors cause signal degradation, even if the error count threshold isn't crossed.
In burst mode, the alarm also occurs if the number of bit errors within the detection window exceeds the configured threshold.
NEW QUESTION # 55
Which of the following is not an optical layer single board in a WDM network?
- A. Optical monitoring channel board
- B. Optical add-drop multiplexing single board
- C. Spectral analysis board
- D. Business processing board
Answer: D
NEW QUESTION # 56
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