CAR is deployed on PTN equipment. Which of the following descriptions is wrong?
Which of the following statements about multiplexed partial range error indication (MS-REI) is true
① B2 byte represents the transmission channel.
② M1 byte folder indicates the transmission channel
③ MS-REI is sent from the receiver to the source.
④ MS-REI is transmitted from source to receiver
⑤ Indicates the number of bit errors detected by the receiver after receiving the MS signal.
How many bits does the VLAN ID occupy in the Ethernet frame format marked with IEEE 802.1Q?
What are the possible reasons for the failure of route calculation by the optical layer path (OCh level)?
When the PTN equipment configures the CBS parameters of QoS, the value affects which items are described correctly
Which of the following identification fields in the data packet header of each protocol layer cannot identify the upper layer data type carried by this layer
Which of the following combinations of dynamic optical add/drop multiplexing boards does not hold?
In the PIN LTE bearer solution, if the link between the core L3 PTN node and the SGW is faulty, what are the triggering detection mechanisms and protection mechanisms?
The characteristic of the open DWDM system is that there are no special requirements for the optical interface of the multiplexing terminal, and only these interfaces are required to comply with the optical interface standard
recommended by ITU-T. The DWDM system adopts wavelength conversion technology to convert the optical signal of the multiplexed terminal into a specific wavelength, and the optical signal of different terminal equipment is converted into
different wavelengths that comply with ITU-T recommendations, and then multiplexed.
In order to determine whether the optical fiber lines and connectors on the wavelength division side are normal, which of the following loopback methods is most suitable?
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