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Regarding the TTX board, which of the following statements is correct?
Regarding the TTX board, which of the following statements is correct?A . In essence, the TTX board is not a 100G tributary board, but it requires a single-slot 100G crossover capacity B. 8800 T64/T32 universal subrack can support TTX single board C. This board belongs to the tributary board and...
In NG-SDH equipment, which of the following conditions will not cause TPS switching to occur?
In NG-SDH equipment, which of the following conditions will not cause TPS switching to occur?A . 3.3V power supply undervoltage B. Abnormal 58M crystal oscillator C. Abnormal chip (SD538, SA527, CPLD) D. Report T_LOSEX on the working branch boardView AnswerAnswer: D
In a chain network, NE1, NE2, and NE3 are all OADM sites, and NE1 is a gateway network element, and uses OSC communication. When the optical monitoring board at the intermediate site NE2 fails, which of the following phenomena will not occur?
In a chain network, NE1, NE2, and NE3 are all OADM sites, and NE1 is a gateway network element, and uses OSC communication. When the optical monitoring board at the intermediate site NE2 fails, which of the following phenomena will not occur?A . The optical monitoring signal between NE1 and...
The protection channel of the 1+1 linear multiplex section can be configured with additional services.
The protection channel of the 1+1 linear multiplex section can be configured with additional services.A . True B. FalseView AnswerAnswer: A
In coherent systems and non-standard fiber entry scenarios, the reference point of fiber entry optical power is moved from the output port of the optical amplifier board at the sending end to the output port of the FIU.
In coherent systems and non-standard fiber entry scenarios, the reference point of fiber entry optical power is moved from the output port of the optical amplifier board at the sending end to the output port of the FIU.A . True B. FalseView AnswerAnswer: A
Which of the following commissioning ranges should the optical power of each single wave before combining (that is, the input optical power of the combining board) be within?
Which of the following commissioning ranges should the optical power of each single wave before combining (that is, the input optical power of the combining board) be within?A . Average single-wave optical power- 2dB<single-wave optical power<average single-wave optical power+ 3dB B. Average single-wave optical power- 1dB<single-wave optical power<average single-wave optical...
The switching mode of the 1+1 linear multiplex section can be single-ended switching or double-ended switching.
The switching mode of the 1+1 linear multiplex section can be single-ended switching or double-ended switching.A . True B. FalseView AnswerAnswer: A
Which of the following descriptions about electrical layer scheduling is wrong?
Which of the following descriptions about electrical layer scheduling is wrong?A . Inter-board cross-connect refers to the cross-connect configured between different boards. Inter-board cross-connection dispatches ODUk services between boards in a subrack through the backplane and centralized cross-connection boards. B. Intra-board cross-connect refers to the cross-connect configured between different ports...
In the deployment or expansion scenario, alarm reversal can reverse the alarm state and reduce a large number of unnecessary alarm reports. Which of the following descriptions about alarm reversal is correct?
In the deployment or expansion scenario, alarm reversal can reverse the alarm state and reduce a large number of unnecessary alarm reports. Which of the following descriptions about alarm reversal is correct?A . The setting of alarm reversal is based on the channel B. The setting of alarm reversal is...
The technology of using local oscillator lasers of the same frequency to interfere with the received optical signal, and recovering the amplitude, phase and polarization state information from the received signal is called coherent receiving technology.
The technology of using local oscillator lasers of the same frequency to interfere with the received optical signal, and recovering the amplitude, phase and polarization state information from the received signal is called coherent receiving technology.A . True B. FalseView AnswerAnswer: A
