QUESTION NO: 1
Arrayed Guided Grating (AWG) multiplexer/demultiplexer has the following advantages: short wavelength spacing, large channels and flat passband. It is suitable for ultra-high-speed, large-capacity DWDM systems.
Arrayed Guided Grating (AWG) multiplexer/demultiplexer has the following advantages: short wavelength spacing, large channels and flat passband. It is suitable for ultra-high-speed, large-capacity DWDM systems.
Correct Answer: B
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QUESTION NO: 2
SDH is a complete hierarchical structure of standardized digital signals that can be used for synchronous digital transmission, multiplexing and cross-connection.
SDH is a complete hierarchical structure of standardized digital signals that can be used for synchronous digital transmission, multiplexing and cross-connection.
Correct Answer: B
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QUESTION NO: 3
The preamble of the Ethernet frame structure is 7 bytes long, and the bit pattern of each byte is
10101010.
The preamble of the Ethernet frame structure is 7 bytes long, and the bit pattern of each byte is
10101010.
Correct Answer: A
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QUESTION NO: 4
In the integrated DWDM system, the transmitting light source must strictly comply with the G.693 optical port specifications.
In the integrated DWDM system, the transmitting light source must strictly comply with the G.693 optical port specifications.
Correct Answer: A
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QUESTION NO: 5
Currently, 32-bit IP addresses are no longer sufficient, and MPLS labels are only 20 bits, so MPLS labels will not be sufficient as the network becomes larger.
Currently, 32-bit IP addresses are no longer sufficient, and MPLS labels are only 20 bits, so MPLS labels will not be sufficient as the network becomes larger.
Correct Answer: A
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QUESTION NO: 6
GFP-F is a packet data (PDU) oriented processing mode. It encapsulates the entire packet data into the GFP payload information area, does not make any changes to the encapsulated data, and decides whether to add a payload area detection domain based on needs.
GFP-F is a packet data (PDU) oriented processing mode. It encapsulates the entire packet data into the GFP payload information area, does not make any changes to the encapsulated data, and decides whether to add a payload area detection domain based on needs.
Correct Answer: A
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QUESTION NO: 7
The MAC address has 48 bits in total. The first () bits represent the device vendor code, and the last () bits are allocated by the device vendor.
The MAC address has 48 bits in total. The first () bits represent the device vendor code, and the last () bits are allocated by the device vendor.
Correct Answer: D
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QUESTION NO: 8
Nonlinear effects are closely related to optical power. To prevent nonlinear effects, the total optical power on the optical fiber should be less than 29dBm.
Nonlinear effects are closely related to optical power. To prevent nonlinear effects, the total optical power on the optical fiber should be less than 29dBm.
Correct Answer: B
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QUESTION NO: 9
A 2.2m cabinet can accommodate up to which of the following OSN 2500 sub-racks?
A 2.2m cabinet can accommodate up to which of the following OSN 2500 sub-racks?
Correct Answer: B
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QUESTION NO: 10
Adjacent cascades can be converted into virtual cascades, but virtual cascades cannot be converted into adjacent cascades.
Adjacent cascades can be converted into virtual cascades, but virtual cascades cannot be converted into adjacent cascades.
Correct Answer: A
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QUESTION NO: 11
QinQ follows the technical standard IEEE802.1ad, and its emergence is mainly to solve the shortage of IPv4 addresses.
QinQ follows the technical standard IEEE802.1ad, and its emergence is mainly to solve the shortage of IPv4 addresses.
Correct Answer: A
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