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The most effective subnet mask for a point-to-point WAN link is 255.255.255.252 .
The most effective subnet mask for a point-to-point WAN link is 255.255.255.252 .A . True B. FalseView AnswerAnswer: A
The comb filter is an active optical device, its main function is to couple or separate odd and even waves in the same band.
The comb filter is an active optical device, its main function is to couple or separate odd and even waves in the same band.A . True B. FalseView AnswerAnswer: B
Chromatic dispersion includes material dispersion and waveguide dispersion. Generally, only material dispersion and waveguide dispersion are considered in single-mode fiber.
Chromatic dispersion includes material dispersion and waveguide dispersion. Generally, only material dispersion and waveguide dispersion are considered in single-mode fiber.A . True B. FalseView AnswerAnswer: A
Which of the following statements is incorrect.
Which of the following statements is incorrect.A . In the connection model of MPLS VPN, the network is composed of the backbone network of the operator and each site of the user. The so-called VPN is the division of a site set, and a VPN corresponds to a set composed...
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...
