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Which of the following is not included in the performance evaluation of WDM network?
Which of the following is not included in the performance evaluation of WDM network?A . Single-wavelength optical power & flatnessB . OSNRC . Combined optical powerD . Monitoring signal optical powerE . Dispersion & FEC BERView AnswerAnswer: D
In a point-to-point WDM networking scenario, the signal-to-noise ratio of a single channel is low, while other channels are normal. What is the reason for this being impossible?
In a point-to-point WDM networking scenario, the signal-to-noise ratio of a single channel is low, while other channels are normal. What is the reason for this being impossible?A . The optical power of the OTU board corresponding to this wave at the transmitting end has decreasedB . The fiber pigtail...
In order to achieve the specified synchronization quality requirements, corresponding requirements must be made for the synchronous transmission network, and certain networking rules must be followed during network planning. Which of the following is wrong?
In order to achieve the specified synchronization quality requirements, corresponding requirements must be made for the synchronous transmission network, and certain networking rules must be followed during network planning. Which of the following is wrong?A . In one clock transmission direction, the number of stations between transit office clocks cannot...
1NE1 is interconnected with NE2. NE1 uses OptiX SDH equipment and uses a VC4:1:2 timeslot. If the service can be opened normally, what is the VC12 timeslot number that the other end needs to use when using equipment from other manufacturers?
1NE1 is interconnected with NE2. NE1 uses OptiX SDH equipment and uses a VC4:1:2 timeslot. If the service can be opened normally, what is the VC12 timeslot number that the other end needs to use when using equipment from other manufacturers?A . 2-1-1B . 1_2_1C . 1_1_2D . 2_2_1View AnswerAnswer:...
During the network acceptance test, it was found that OSN 3500 could work normally when connected to an external clock source, and entered the hold state when disconnected from the external clock source. However, the hold state could not last for 24 hours. Which of the following are the possible reasons?
During the network acceptance test, it was found that OSN 3500 could work normally when connected to an external clock source, and entered the hold state when disconnected from the external clock source. However, the hold state could not last for 24 hours. Which of the following are the possible...
When congestion occurs, there are many different queuing strategies. If you need to serve the first-arriving packets first, you can use the () queuing strategy; if you want to ensure that the most urgent and critical services are served first, you can use the () queuing strategy; if you need to balance the delay and delay jitter of each flow, you can use the () queuing strategy; if you want to provide dedicated bandwidth for specific services , you can use the () queuing strategy.
When congestion occurs, there are many different queuing strategies. If you need to serve the first-arriving packets first, you can use the () queuing strategy; if you want to ensure that the most urgent and critical services are served first, you can use the () queuing strategy; if you need...
If both the bidirectional OA and OSC report a loss of light alarm in a WDM network, which is the most likely cause?
If both the bidirectional OA and OSC report a loss of light alarm in a WDM network, which is the most likely cause?A . One-way interruption of line optical fiberB . The line optical fiber is interrupted in both directionsC . Unidirectional degradation of line fiberD . Bidirectional degradation of...
In the Linux system, configure an IP address 129.9.1.100 for the network card Eth0. Which of the following command is used?
In the Linux system, configure an IP address 129.9.1.100 for the network card Eth0. Which of the following command is used?A . ifconfig eth0 129.9.1.100B . ipconfig 129.9.1.100C . ipconfig eth0 129.9.1.100D . ifconfig 129.9.1.100View AnswerAnswer: A
Which of the following descriptions about branch SNCP protection is wrong?
Which of the following descriptions about branch SNCP protection is wrong?A . When configuring a branch SNCP, you need to set the SNCP subtype.B . The crossover granularity is GE or Any signalC . Trigger conditions are: board not in place, SF, SDD . Branch SNCP protection uses the dual-transmit...
When planning a 1+1 HSB, corresponding planning principles should be followed. Which of the following are not planning principles for HSB?
When planning a 1+1 HSB, corresponding planning principles should be followed. Which of the following are not planning principles for HSB?A . If the protection type is recovery, it is recommended to set the waiting recovery time to 5 to 12 minutes. The recommended setting is the default value of...
