Huawei H31-311 Practice Test - Questions Answers, Page 9
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Which of the following effects is used by the Raman amplifier?
The section overhead of STM-4 is () bytes/frame.
When the lower-order resources of a device are insufficient, which of the following measures can be taken? (Multiple Choice)
After the U2000 delivers configuration data to an NE, if the verification fails on the SCC board, the NE enters the installation state.
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.
TU-AIS is frequently encountered during network maintenance. Which of the following alarms can trigger the TU-AIS alarm? (Multiple Choice)
SES: There are 5% or more than 5% bit error blocks or at least one defect (OCI/AIS/LCKAAE/LTCA1M/PLM) within one second.
When the ACT indicator of an SDH board is off, it indicates that this board has a hardware fault and cannot be used,
In the SDH optical synchronous transmission system, which of the following bytes is used to transmit the quality and usage information of clock sources?
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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