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Huawei H31-311 Practice Test - Questions Answers, Page 9

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List of questions

Question 81

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Which of the following effects is used by the Raman amplifier?

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Question 82

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The section overhead of STM-4 is () bytes/frame.

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Question 83

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When the lower-order resources of a device are insufficient, which of the following measures can be taken? (Multiple Choice)

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Question 84

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After the U2000 delivers configuration data to an NE, if the verification fails on the SCC board, the NE enters the installation state.

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Question 85

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Some of the SNCP protection switching conditions are default, such as AU-AIS and TU-AIS. Others conditions are optional, such as HP-TIM and HP-SLM. The optional conditions can be flexibly set based on service levels.

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Question 86

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TU-AIS is frequently encountered during network maintenance. Which of the following alarms can trigger the TU-AIS alarm? (Multiple Choice)

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Question 87

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SES: There are 5% or more than 5% bit error blocks or at least one defect (OCI/AIS/LCKAAE/LTCA1M/PLM) within one second.

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Question 88

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When the ACT indicator of an SDH board is off, it indicates that this board has a hardware fault and cannot be used,

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Question 89

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In the SDH optical synchronous transmission system, which of the following bytes is used to transmit the quality and usage information of clock sources?

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Question 90

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An optical amplifier unit compensates for line loss and extends transmission distance. Connecting multiple optical amplifier units in cascading mode can infinitely extend transmission distance of a system.

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Total 186 questions
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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).