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Huawei H31-311 Practice Test - Questions Answers, Page 19

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Question 181

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After an optical fiber is connected according to the networking diagram, if a critical alarm is reported on the optical port, the SRV indicator on the line board is red.

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Question 182

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During the service configuration between two adjacent sites (NE1 and NE2), if VC4:1 and VC12:l-3 are used on the NEl's line board connected to NE2, the same VC4 and VC12 timeslots must be used on the NE2's line board connected to NE1.

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Question 183

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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?

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Question 184

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Which of the following can be the center wavelengths of the pump sources in an EDFA? (Multiple Choice)

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Question 185

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RSOH, MSOH, HPOH, and LPOH implement monitoring functions in the descending order of monitoring scope.

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Question 186

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The single-fiber bidirectional WDM system uses only one optical fiber to transmit optical signals in two directions at the same time. The optical signals in the two directions should be arranged at different wavelengths.

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Related questions

Which of the following is the multiplexing mode of SDH?
Which of the following are the main advantages of SDH? (Multiple Choice)
The interval between two adjacent pointer justification events is at least ( ) frames.
According to ITU-T recommendations, the requirement that the MSP switching time should be within 50 ms is conditional. For example, the number of NEs on an entire ring network is less than 16.
Forced switching, fiber cut switching, manual switching, and exercise switching are in the descending order of priority.
The pointer is used for alignment and indicates the start position of VC-n in the corresponding AU or TU frame. In this way, the receive end can correctly remove the corresponding VC from the STM-N, and then split the VC and C encapsulation to separate low-rate signals, such as PDH. That is, low-rate tributary signals can be directly dropped from the STM-N signal.
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?
The last 256 columns in the OTN frame structure are FEC areas, which are used for forward error correction.
Which of the following is the frame structure of STM-16?
Frame-Mapped GFP (GFP-F) is a processing mode oriented to data coding blocks (such as Fiber Channel and ESCON).