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H31-311_V2.5 Huawei HCIA-Transmission V2.5 Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Huawei H31-311_V2.5 HCIA-Transmission V2.5 certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.

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Total 246 questions

Which of the following is the frame indicated by the VC-4 J1 byte by the AU pointer of the current frame?

A.

Current framework

B.

Next frame

C.

Previous frame

D.

None of the above

Which of the following statements about OTN advantages is false?

A.

Provides 2 J Gbit/s, 107 Gbit/s, 43 Gbit/s, and even 111.8 Gbit/s high-rate interfaces.

B.

Satisfies the requirement for Tbit/s bandwidth per fiber through the WDM function.

C.

Provides powerful outband PEC functions to effectively guarantee the line transmission performance.

D.

Provides a maximum of five levels of nested or overlapped TCM connection monitoring.

The OTN signal has a fixed pad period, the same frame period as the SDH signal.

A.

True

B.

False

The device IP address of the gateway element and the non-gateway element must be set in the same network segment.

A.

True

B.

False

The rate of STM-0 is 51.84 Mbtt/s.

A.

TRUE

B.

FALSE

The1310nm and 1550nm transmission windows are low loss windows. In DWDM systems, only the 1560m transfer window is used. Which of the following is the main cause?

A.

The EDFA operating wavelength flatness region is contained in this window.

B.

The nonlinear effect of the B.1550 nm-wavelength region is small.

C.

The 1550nm wavelength region is suitable for long-distance transmission.

D.

None of the above

When configuring the SXCS single board for the OSN3500, which of the following is the access package of the fully configured substand?

A.

35G

B.

58.75G

C.

80G

D.

156 to pick up the answer

When setting up LCAS mode, follow these principles:

1. If both ends of the device are Huawei devices, please set it to "Standard Mode".

2. If a Huawei device is interconnected with a third-party device, set the interconnect device to the same mode according to the mode supported by the third-party device.

A.

True, yes

B.

False

Which of the following is not a basic component of a WDM system?

A.

OMU

B.

OA

C.

OTU

D.

OSU

A standard Ethernet frame should not be shorter than 64 bytes, which is determined by the____and the collision detection used. (Enter only lowercase letters.)

When you configure services on a per-NE basis, which of the following protection scenarios does not require subnet configuration before subsequent protection operations?

A.

MSP

B.

SNCP

C.

MSP and SNCP

D.

PSMA

Which of the following statements about the MD02 board is incorrect?

A.

OTU4 or OTUC2 services can be received or transmitted on the WDM side.

B.

100GE or OTU4 services can be received on the client side.

C.

The board supports regeneration mode.

D.

The board tunes WDM-side optical signals within the range of 120 wavelengths in Super C band at a 50 GHz spacing and supports flexible grid.

Which of the following clock operating modes supports the ITU-T G.781 standard? (Multiple choice).

A.

Tracking

B.

Hold

C.

Self-curved running

D.

Master/Slave

Which of the following statements about the OTM-n .m and OTMnr .m for OTN are incorrect?

A.

n represents the number of wavelengths carried by the maximum capacity

B.

m indicates the rate. The value can be 1, 2, or 3. .

C.

r represents OTM., which does not have OSC capabilities

D.

OTM-nr .m with OSC signal is OTM-n.m.

Which of the following statements regarding the protection of the cross-connecting plate 1+1 is correct? (Multiple choice).

A.

The source business board sends services to the main and standby crossover boards. .

B.

After the service cross-connection is completed, the active and standby cross-board sends the data of the primary cross-board to the receiving service board.

C.

The receiving service board can only receive data from the active cross-link board

D.

The bus of the two cross-connected modules works independently and does not interfere with each other. .

E.

Dual bus system structure indicates that the service board performs dual data transfer to the cross-connection side and selectively receives data on the cross-connection side. .

F.

Both cross-connecting plates have the same configuration. The service board will selectively receive services from one of them based on the quality of service and the status of the cross-connecting board. .

Which of the following bytes can be used for ordenwire calls between two REG devices?

A.

E1

B.

E2

C.

E1 and E2

D.

Not above

The OTUCn signal rate does not include the FEC overhead area.

A.

TRUE

B.

FALSE

Which of the following statements about ODUk_PM_BDI is correct?

A.

ODUk PM signal degradation

B.

ODUk PM part BIP8 bit False threshold crossover

C.

O0UkpM follows the defect indication

D.

OD0kPM parallel connection indication

When the ACT indicator of the SDH board is off, it means that the board has a hardware failure and cannot be used.

A.

True

B.

False

Which of the following logic function blocks are involved in processing clock signals? (Multiple choice).

A.

SPl

B.

RST

C.

MCF

D.

SETS

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Total 246 questions
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