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Huawei H31-311_V2.5 (HCIA-Transmission V2.5) exam is designed to test the candidate's knowledge and skills in the field of transmission networks. HCIA-Transmission V2.5 certification is of great importance to those who want to pursue a career in the telecommunications industry as it provides a comprehensive understanding of the transmission technologies and protocols used in telecommunications networks.
NEW QUESTION # 128
In the case of 1+1 linear MSP, which of the following switching modes does not require the APS protection protocol to be enabled? (Multiple choice)
- A. Dual-end reply mode
- B. Dual-ended non-reply mode
- C. Single-ended non-reply mode
- D. Single-ended reply mode
Answer: C,D
NEW QUESTION # 129
The SDH frame structure is a rectangular block frame based on which of the following options?
- A. Bit
- B. Block D frame
- C. Bytes
Answer: C
NEW QUESTION # 130
The comb filter is an active optical device whose main function is to couple or separate odd waves and even waves in the same band.
- A. True
- B. False
Answer: B
NEW QUESTION # 131
NEA and NEB are adjacent NEs. If day 3 and low-order bit errors occur in the A>day direction, and day 1082, B3 and low-order bit errors occur in the B>A direction, which of the following performance events are reported by NEA? (Multiple choice)
- A. RSBBE
- B. MSBBE
- C. RSFEBBE
- D. MSFEBBE
- E. HPBBE
- F. HPFEBBE
Answer: A,B,E,F
NEW QUESTION # 132
Which of the following statements about the frame structure of SDH signals are correct? (Multiple choice)
- A. The frame period of different levels of SDH signals is the same
- B. The information payload area only carries the information payload
- C. SDH signal is byte interleaved by column
- D. SDH signals of different rates have different frequencies.
Answer: A,B,D
NEW QUESTION # 133
PDM uses a polarization beam splitter to divide the laser into two vertical directions: x and y.
- A. Error
- B. True
Answer: B
NEW QUESTION # 134
Which of the following is not an advantage of SDH?
- A. Multiplex Line Standards
- B. Backward compatibility
- C. The overhead for OAM is relatively small
- D. Internationally unified standard interface
Answer: C
NEW QUESTION # 135
U2000 can flexibly interconnect with different third-party network administrators through the Northbound Interface (NBI) and provide physical inventory and alarm information for the upper-layer network management.
- A. Error
- B. True
Answer: B
NEW QUESTION # 136
Which of the following are device-level protection solutions for SDH products? (Multiple choice)
- A. TPS Protection
- B. Cross-connect and timing board protection
- C. System control board protection
- D. Power protection
Answer: A,B,C,D
NEW QUESTION # 137
Modulation is the process of processing the information of the signal source and adding it to the carrier to make it suitable for channel transmission. It is a technology that changes the carrier with the signal. There are two types of modulated signals, namely analog signals and digital signals. Using analog signals to control the change of carrier parameters is called analog modulation; using data signals to control the change of carrier signal parameters is called digital modulation.
- A. True
- B. False
Answer: A
NEW QUESTION # 138
Which of the following statements about the sequence of signal flow between SDH interfaces and cross-connect units are correct?
- A. SPIMSPMSA
- B. SPIRST
- C. SPICMSTRST
- D. SPTMSTMSARSTMSPHPT
Answer: A
NEW QUESTION # 139
A communication network is a system that interconnects geographically dispersed user terminal devices to achieve communication and information exchange. It is mainly composed of user equipment and transmission equipment.
- A. True
- B. False
Answer: B
NEW QUESTION # 140
Which of the following is the switching point of linear multiplex segment protection?
- A. Branch unit
- B. Cross-connect unit
- C. Main control unit
- D. Line Unit
Answer: B
NEW QUESTION # 141
Which of the following alarm/event storage modes does U2000 support? (Multiple choice).
- A. Dump the alarm log periodically
- B. Automatic pouring
- C. Manual dumping
- D. overflow does invert ()
Answer: A,C,D
NEW QUESTION # 142
TU-AIS is often encountered during network maintenance. Which of the following alerts can trigger a TU-AIS alert? (Multiple choice).
- A. HP-TIM
- B. AU-LOP
- C. R-LOS
- D. B2-EXC
Answer: A,B,C,D
NEW QUESTION # 143
Which of the following options are correct regarding 1:1 optical line protection? (Multiple choice)
- A. 1:1 optical line protection does not use the method of splitting the optical signal into two paths, but uses an auxiliary light source to emit light, so the insertion loss introduced is smaller than that of 1+1 protection.
- B. 1:1 optical line protection requires APS protocol
- C. 1:1 protection only supports dual-end switching
- D. 1:1 fiber protection can be set to single-end switching or double-end switching
Answer: A,B,C
NEW QUESTION # 144
Under which of the following scenario combinations can the rerouting and automatic wavelength change functions of the optical layer ASON network be realized?
- A. Directionless+Colored
- B. Directed+colored
- C. Directioned+Colorless
- D. Directionless+Colorless
Answer: D
NEW QUESTION # 145
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