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Huawei H31-311 Practice Test - Questions Answers, Page 11

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List of questions

Question 101

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Which of the following maintenance signals is transmitted from a downstream site to an upstream site in OTN?

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Question 102

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The frame period of OTN signals is fixed, which is the same as that of SDH signals.

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Question 103

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In the case of SNCP, a line board selectively receives services. Therefore, the SNCP can protect the services on the line.

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Question 104

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Which of the following is the impact of changing the NE ID of OSN 3500 on the NMS?

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Question 105

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MAC loopback and PHY loopback are used for fault locating. When the MAC loopback is set to an inloop, you can set the PHY loopback according to the actual situation.

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Question 106

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When synchronization is performed on the 1U2000, the NE data that is the same as that on the U2000 is not uploaded to the U2000, and the data that exists on the U2000 but not on the NE is deleted.

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Question 107

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In an OSN 550, the CXL slot houses a functional board that integrates the system control and communication (SCC) unit, cross-connect unit, and clock unit. The functional board is available in multiple types depending on the functions and access capabilities provided by the OSN 550.

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Question 108

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Which of the following alarms does not trigger the AU-AIS alarm?

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Question 109

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Forced switching, fiber cut switching, manual switching, and exercise switching are in the descending order of priority.

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Question 110

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Which of the following statements about clock sources is incorrect?

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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).