Huawei H31-311 Practice Test - Questions Answers, Page 11
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Which of the following maintenance signals is transmitted from a downstream site to an upstream site in OTN?
The frame period of OTN signals is fixed, which is the same as that of SDH signals.
In the case of SNCP, a line board selectively receives services. Therefore, the SNCP can protect the services on the line.
Which of the following is the impact of changing the NE ID of OSN 3500 on the NMS?
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.
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.
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.
Which of the following alarms does not trigger the AU-AIS alarm?
Forced switching, fiber cut switching, manual switching, and exercise switching are in the descending order of priority.
Which of the following statements about clock sources is incorrect?
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