Huawei H31-311-ENU : HCIA-Transmission(Huawei Certified ICT Associate-Transmission)

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Huawei H31-311-ENU Exam Syllabus Topics:

Huawei HCIA-Transmission(Huawei Certified ICT Associate-Transmission) Sample Questions:

1. Which of the following statements about the 1+1 protection of cross-connect boards are correct? (Multiple Choice)

A) The buses of the two cross-connect modules work independently and do not interfere with each other.
B) After service cross-connections are completed, the active and standby cross-connect boards send the data of the active cross-connect board to the sink service board.
C) The source service board sends services to the active and standby cross-connect boards.
D) The sink service board can receive only the data from the active cross-connect board.
E) Two cross-connect boards have the same configuartion. Service boards will selectively receive services from one of them based on the quality of services and status of cross-connect boards.
F) The dual-bus system structure indicates that the service board performs dual feeding of data to the cross-connect side and selective receiving of the data on the cross-connect side.

2. PDM uses the polarization beam splitter to divide the laser into two perpendicular directions: x and y.

A) FALSE
B) TRUE

3. SDH signals must be scrambled before being transmitted over optical fibers.
Which of the following bytes are not scrambled? (Multiple Choice)

A) J0
B) A2
C) A1
D) J1

4. Which of the following factors determines that the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent After signals are transmitted for a certain distance in a WDM system, the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent.
Which of the following is the main cause?

A) New types of optical fibers are not used.
B) EDFAs are used.
C) Multiplexers and demultiplexers are used.
D) Fiber attenuation is excessively high.

5. An unprotected chain consists of four NEs: NE1, NE2, NE3, and NE4. An end-to-end VC4 trail NE1-NE4 is created, and NE5 is added between NE2 and NE3 for capacity expansion. The original configuration remains unchanged, and no service is configured on NE5. In this case, the unprotected chain becomes NE1-NE2-NE5-NE3-NE4, and how many VC4 trails can be searched out?

A) 1
B) 2
C) 0
D) 3

Solutions: