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Overhead ratio is a factor that affects the error correction capability of FEC technology. Generally, under the same FEC encoding/decoding algorithm conditions, the higher the overhead ratio, the greater the net coding gain.
Overhead ratio is a factor that affects the error correction capability of FEC technology. Generally, under the same FEC encoding/decoding algorithm conditions, the higher the overhead ratio, the greater the net coding gain.A . TRUEB . FALSEView AnswerAnswer: A
In a wavelength division system, after a certain distance of transmission, the optical signal-to-noise ratio of the receiving end signal will be reduced to a certain extent. The main reason is ？
In a wavelength division system, after a certain distance of transmission, the optical signal-to-noise ratio of the receiving end signal will be reduced to a certain extent. The main reason is ？A . The fiber attenuation is too largeB . Use of demultiplexerC . Use of EDFAD . No new...
In the WDM network design, as long as enough EDFA cascades are used to compensate for the optical power loss in the transmission process. Then the system can transmit a long distance without restriction.
In the WDM network design, as long as enough EDFA cascades are used to compensate for the optical power loss in the transmission process. Then the system can transmit a long distance without restriction.A . TRUEB . FALSEView AnswerAnswer: B
In the same subnet, when configuring NNI port properties, the IP of the ports at both ends of different links can be repeated.
In the same subnet, when configuring NNI port properties, the IP of the ports at both ends of different links can be repeated.A . TRUEB . FALSEView AnswerAnswer: A
When configuring 1+1 optical line protection, you can select RI1/TI2/TO2 as the working channel according to the actual situation.
When configuring 1+1 optical line protection, you can select RI1/TI2/TO2 as the working channel according to the actual situation.A . TRUEB . FALSEView AnswerAnswer: B
NG WDM equipment is the same as STP equipment, you can practice network element configuration on the network management through the pre-configuration method.
NG WDM equipment is the same as STP equipment, you can practice network element configuration on the network management through the pre-configuration method.A . TRUEB . FALSEView AnswerAnswer: B
For ODUk SNCP protection, if the pass-through site is an electrical relay station, it is recommended to configure the SNCP type as SNC/I when configuring the protection.
For ODUk SNCP protection, if the pass-through site is an electrical relay station, it is recommended to configure the SNCP type as SNC/I when configuring the protection.A . TRUEB . FALSEView AnswerAnswer: A
Before the ROADM single board performs optical power commissioning, the virtual optical layer service must be configured first, otherwise the ROADM limited single board will block all wavelengths by default.
Before the ROADM single board performs optical power commissioning, the virtual optical layer service must be configured first, otherwise the ROADM limited single board will block all wavelengths by default.A . TRUEB . FALSEView AnswerAnswer: A
Which of the following subracks does not support the configuration of grouped boards?
Which of the following subracks does not support the configuration of grouped boards?A . OSN 1800IIB . OSN 9800 P18C . OSN 8800 T16D . OSN 1800VView AnswerAnswer: A
The following description of the performance parameters of line fiber quality monitoring, which is wrong?
The following description of the performance parameters of line fiber quality monitoring, which is wrong?A . Increasing the pulse width will increase the duration of laser emission, that is, increasing the injected energy, and a larger dynamic range can be obtained, but an increase in pulse width will result in...
