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The communication network can be divided into local area network and wide area network according to the geographical scope it covers, and a metropolitan area network between the local area network and the wide area network. The wide area network is characterized by low delay, high data rate and reliable transmission.
The communication network can be divided into local area network and wide area network according to the geographical scope it covers, and a metropolitan area network between the local area network and the wide area network. The wide area network is characterized by low delay, high data rate and reliable...
If a network port that supports auto-negotiation is connected to a network port that does not support auto-negotiation, half-duplex to full-duplex may occur.
If a network port that supports auto-negotiation is connected to a network port that does not support auto-negotiation, half-duplex to full-duplex may occur.A . True B. FalseView AnswerAnswer: A
The optical monitoring channel is set up for the monitoring of the WDM optical transmission system. ITU-T recommends that the wavelength of 1510nm is preferred, and the capacity is 2MHz/s .
The optical monitoring channel is set up for the monitoring of the WDM optical transmission system. ITU-T recommends that the wavelength of 1510nm is preferred, and the capacity is 2MHz/s .A . True B. FalseView AnswerAnswer: B
The OSN 7500 supports a maximum of 2M service boards. Which of the following is correct.
The OSN 7500 supports a maximum of 2M service boards. Which of the following is correct.A . 1 B.2 C.3 D.4View AnswerAnswer: D.
The levels of forced switching, fiber cut switching, manual switching, and practice switching are arranged from high to low.
The levels of forced switching, fiber cut switching, manual switching, and practice switching are arranged from high to low.A . True B. FalseView AnswerAnswer: A
What are the differences between the AU pointer and the TU pointer? (Multiple choice)
What are the differences between the AU pointer and the TU pointer? (Multiple choice)A . The scope of the instruction is different B. The number of bits occupied by the pointer value is different C. The bytes stored in the pointer value are different D. The unit of adjustment is...
Which of the following options are in the low-loss area of single-mode fiber? (Multiple choice)
Which of the following options are in the low-loss area of single-mode fiber? (Multiple choice)A . 1310nm _ B. 900nm C.1550nm D.1200nmView AnswerAnswer: AC
Which of the following elements does a data communication network have in terms of equipment? (Multiple choice)
Which of the following elements does a data communication network have in terms of equipment? (Multiple choice)A . Terminal equipment B. Transmission system C. Switching devices D. Core equipmentView AnswerAnswer: ABC
When inserting LCK to the ODUk signal at the local end, what processing will the downstream station system not perform?
When inserting LCK to the ODUk signal at the local end, what processing will the downstream station system not perform?A . Report ODUk_PM_LCK alarm B. Download ODUk_AIS information C. Return ODUk_PM_BDI D. Insert ODUk_PM_LCK alarmView AnswerAnswer: D.
The LDG supports electrical layer scheduling at the ODU1 level.
The LDG supports electrical layer scheduling at the ODU1 level.A . True B. FalseView AnswerAnswer: B
