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NEW QUESTION # 56
The dispersion caused by the two orthogonal polarization states of signal light having different propagation speeds in the optical fiber is called polarization mode dispersion.
- A. True
- B. False
Answer: A
NEW QUESTION # 57
In a WDM network, if both the bidirectional OA and OSC report an optical loss alarm, which is the most likely reason?
- A. Bidirectional degradation of line fiber
- B. Line fiber bidirectional interruption
- C. Unidirectional degradation of line fiber
- D. Line fiber one-way interruption
Answer: B
NEW QUESTION # 58
OLT does not need to configure () modules only when using external optical transmission equipment.
Answer:
Explanation:
Optical transmission
NEW QUESTION # 59
The receiver of an OTU board is an avalanche photodiode (APD). Which of the following is within the input optical power range?
- A. 0dBm
- B. -30dBm
- C. -15dBm
- D. -4dBm
Answer: D
Explanation:
Avalanche photodiode (APD) receivers are commonly used on OTU boards due to their high sensitivity. The input optical power range typically lies between -4 dBm (maximum) and around -28 dBm (minimum).
Among the options, -4 dBm is within the acceptable input power range, ensuring the APD operates without saturation or damage. Optical powers too high can saturate the receiver, while too low powers cause poor signal-to-noise ratio. HCIP-Transmission specifies these ranges to ensure optimal receiver performance and avoid optical overload or underpower conditions.
NEW QUESTION # 60
The OTS path refers to the physical fiber connection between two adjacent OM/OD/OA on the main optical path.
- A. True
- B. False
Answer: B
NEW QUESTION # 61
PRBS can be used to test whether the SDH service is normal and whether the protection switching function is normal.
- A. True
- B. False
Answer: A
NEW QUESTION # 62
The minimum pipe granularity defined by the traditional OTN network is ODUO, which is 1.25G. If it is used to carry services with smaller granularity, the resource utilization rate may not be high.
- A. True
- B. False
Answer: A
NEW QUESTION # 63
Which of the following terms has the meaning that "the wavelength carrying local services can be transmitted to a specific direction"?
- A. Colorless
- B. Directionless
- C. Directioned
- D. Colored
Answer: C
Explanation:
The term "Directioned" in WDM systems means that the wavelength carrying local services can be transmitted in a specific direction. This contrasts with directionless systems, where wavelengths can propagate in either direction without restriction. Directioned capability allows more controlled and secure wavelength routing, especially in ring or mesh networks where traffic flows need clear paths. Colorless refers to wavelength independence (a device can handle any wavelength), while colored means the device or port is assigned to a fixed wavelength. Thus, directioned accurately describes the wavelength propagation direction property as per HCIP-Transmission explanations on optical network design and wavelength routing.
NEW QUESTION # 64
The number of network elements (including REG) in the two-fiber bidirectional multiplex section shared protection ring may exceed 16.
- A. True
- B. False
Answer: A
NEW QUESTION # 65
Failed to create a Client path using the path method, which of the following are the possible reasons? (Multiple choice)
- A. The channel has been used up
- B. There is no physical connection between boards
- C. The FEC modes at both ends of the transceiver do not match
- D. No complete OCh path
Answer: A,D
NEW QUESTION # 66
Which of the following unified line boards can support the crossover of VC, packet and ODUk at the same time?
- A. U210
- B. HSNS4
- C. HUNQ2
- D. UNQ2
Answer: B
NEW QUESTION # 67
In any scenario, hard reset of the main control board will cause service interruption.
- A. True
- B. False
Answer: B
NEW QUESTION # 68
40 Gbit/s non-coherent and 100 Gbit/s coherent mixed transmission WDM systems can add DCM modules according to actual conditions.
- A. True
- B. False
Answer: A
NEW QUESTION # 69
Which of the following is a functional unit. It provides the interface related to the orderwire telephone and the serial data of the system?
- A. Cross-connect unit
- B. Auxiliary units
- C. Line unit
- D. Branch unit
Answer: B
NEW QUESTION # 70
Which of the following statements about the TMB1AST2 board are true?
- A. The TM1 optical port must be connected to the TMI1 optical port.
- B. When the board is working with a DFIU03/DFIU04 board, the OSC optical port must be configured with an optical module that supports the 1511 nm wavelength.
- C. The TMB1AST2 board supports the IEEE 1588v2 clock processing and OTDR functions.
- D. When the board is working with a DSFIU01/DSFIU02 board, the TM1/RM1 optical port must be configured with an optical module that supports the 1511 nm wavelength, and the TM2/RM2 optical port must be configured with an optical module that supports the 1491 nm wavelength.
Answer: A,B,C,D
Explanation:
The TMB1AST2 board is a specialized optical module used in transmission equipment. According to HCIP- Transmission references, all the statements about this board are correct. (A) The TM1 optical port must be connected to the TMI1 optical port for proper operation. (B) It supports IEEE 1588v2 clock processing, essential for precise time synchronization, and includes OTDR (Optical Time Domain Reflectometer) functions for fiber fault detection and maintenance. (C) When working with DFIU03/DFIU04 boards, the OSC optical port requires an optical module that supports the 1511 nm wavelength to ensure wavelength compatibility. (D) Similarly, when working with DSFIU01/DSFIU02 boards, the TM1/RM1 and TM2/RM2 ports must use optical modules supporting 1511 nm and 1491 nm wavelengths respectively, ensuring correct wavelength assignment for WDM channels. This detailed configuration ensures interoperability and proper system functionality.
NEW QUESTION # 71
Which of the following descriptions about the function of the electrical layer overhead processing source are correct? (Multiple choice)
- A. ODUkT calculates BIP-8 and writes it to TCMi.
- B. ODUkP is responsible for calculating BIP-8, writing PM, GCC1/2 and other overheads.
- C. OPUk performs client signal mapping, frequency adjustment and rate adaptation in the sending direction.
- D. OTUk is responsible for calculating BIP-8 and writing into SM, GCC0, FAS, MAFS, etc.
Answer: A,B,C,D
NEW QUESTION # 72
Two sockets are called paired if the overhead bytes pass through the backplane bus between the two sockets. Paired broadcast slots realize automatic transparent transmission of overhead bytes, such as adding () and () to improve MSP switching performance even if the SCC board on the local element is offline. Protect the DCC communication with its network element. (Multiple choice)
- A. D byte
- B. B1 byte
- C. E1 byte
- D. K bytes
Answer: A,C,D
NEW QUESTION # 73
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Huawei H31-341_V2.5 (HCIP-Transmission V2.5) Certification Exam is designed for professionals who want to demonstrate their knowledge and skills in the field of transmission network planning, design, optimization, and maintenance. HCIP-Transmission V2.5 certification exam is intended for individuals who are responsible for the operation and maintenance of transmission networks in various industries, including telecommunications, broadcasting, and power utilities.
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