In MSP networking, when optical fibers are connected between sites, the east optical board of a site is connected to the west optical board of the downstream site, and these sites are connected in sequence to form a ring. In this case, the direction from the east optical board of a site to the west optical board of the downstream site is the major ring direction, and the direction that the ring is formed is the service direction.
Answer(s): B
Which of the following device domains can be managed by the U2000? (Multiple Choice)
Answer(s): A,B,C,D
The value of the MFAS byte increases with the sequence number of the OTUk/ODUk base frame, and a maximum of ( ) base frames are included.
Answer(s): C
Which of the following clock working modes support the ITU-T G.781 standard? (Multiple Choice)
Answer(s): A,B,C
Which of the following operations may interrupt NE services? (Multiple Choice)
Answer(s): C,D
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