[Q581-Q596] Try H31-341_V2.5 Free Now! Real Exam Question Answers Updated [Oct 01, 2025]

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Try H31-341_V2.5 Free Now! Real Exam Question Answers Updated [Oct 01, 2025]

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Q581. Which of the following factors determine that the optical signal-to-noise ratio (OSNR) at the receiving end is reduced to a certain extent. After the signal is transmitted for a certain distance in the WDM system, the optical signal-to-noise ratio (OSNR) at the receiving end is reduced to a certain extent.
Which of the following is the main reason?

Using EDFA

Using multiplexers and demultiplexers

Do not use new fiber optics

Fiber attenuation is too high

Q582. ESC is mainly divided into which of the following from the principle of realization? (Multiple choice)

Insert DCC

Fixed structure DCC

Adjust the top DCC

Q583. The switching mode of the 1+1 linear multiplex section can be single-ended switching or double-ended switching.

True

False

Q584. In CV/FFD detection, the Ingress node sends a detection message at a certain period, and the Egress node uses how many times the sending cycle as the detection cycle, detect the number of received detection messages and the content of the message?

Q585. Which of the following levels does the U2000 network management belong to?

Network-level management system

Subnet level management system

Network element level management system

Management systems at the regional level

Q586. NG WDM system fault analysis methods include? (Multiple choice)

RMON performance analysis

Loopback method

Signal Flow Analysis

Substitution method

Q587. In Tunnel APS protection, which item belongs to the external switching condition? (Multiple choice)

Clear switching

SF switching

Lock protection channel

Practice switching

Q588. Which of the following descriptions about PWE3 technology is correct? (Multiple choice)

The internal data services carried by PWE3 are visible to the core network

PRE3 technology provides end-to-end virtual link emulation for ATM, Ethernet, and TDM services at the PS network boundary

PWE3 technology is a Layer 2 VLL solution

For PE3 emulation of Ethernet services, the PW control word can be manually configured on the PE

Q589. The OLT mainly plays the role of () in the combined networking mode of OLT+ONU, so the OLT equipment is required to have better performance and be able to provide sufficient bus bandwidth

Convergence

Q590. Which of the following are device-level protection schemes for SDH products? (Multiple choice)

Power protection

Cross-connect and timing board protection

System Control Board Protection

TPS protection

Q591. () means that each up-wave or down-wave port can only go up and down with a fixed wavelength.

Colored

Q592. Which of the following statements about the MPLS-TP OAM level is correct?

Section is the service layer of Tunnel, Tunnel is the service layer of PW, and PW is the service layer of Service

Section is the service layer of PW, PW is the service layer of Tunnel, and Tunnel is the service layer of Service

Service is the service layer of PW, PW is the service layer of Tunnel, and Tunnel is the service layer of Section

Tunnel is the service layer of PW, PW is the service layer of Service, and Service is the service layer of Section

Q593. For a coherent system, the reference point of the fiber-in optical power in the non-standard fiber-in scenario is the output port of the optical amplifier board at the sending end.

True

False

Q594. When configuring the dual-stage amplifier board of RAU+OAU, which position in the figure below is the best recommended position for the DCM module?

Q595. When using the path method to create a Client path, if there is an RLOS alarm on the line board, the path cannot be created.

True

False

Q596. TDH PTE3 is also called the CES service carried by PWE3, and supports unstructured emulation mode SAToP and structured emulation mode CESoPSN. Which of the following descriptions about the two emulation modes is wrong?

SAToP does not need to identify the frame structure in the service signal. It treats the TDI service as a Fengxing data stream, divides the TD stream according to the integer multiple of 1 frame length, and then encapsulates it into PWE3 packets for transmission.

The control field of the SAToP message is optional.

CES. The number of packets that can be encapsulated in the P3 quotation effect is determined by the “message loading time”. The teaching cycle of T is 125 microseconds. When the “message loading time” is 1=, it means that each P message will load 8 TD5s.

In SAToP emulation mode, the overhead and payload in the T0 signal are transparently transmitted, and alarm transparent transmission is supported.

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