Huawei
H31-341_V2.5 · Question #489
Loopback is a common operation for routine maintenance and troubleshooting. Which of the following statements about loopback operations are wrong? (Multiple choice)
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Question
Loopback is a common operation for routine maintenance and troubleshooting. Which of the following statements about loopback operations are wrong? (Multiple choice)
Options
- AIt is necessary to consider increasing the optical attenuation when performing hardware loopback
- BAfter performing the outer loopback, the signal flows to the inside of the WDM network element
- CHardware loopback is the loopback of the optical port and the electrical port with a pigtail and a self- loop
- DAfter the inner loopback is executed, the signal flows to the outside of the WDM network element
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