Posted by: Pdfprep
Post Date: November 6, 2020
In the frame structure of SDH signals, there are abundant overhead bytes used for operation, administration, and maintenance (OAM). The overhead bytes account for ( ) of all bits in the entire frame and greatly enhance the monitoring functions of the network.
A . 1/10
B . 1/20
C . 1/30
D . 1/40
Answer: B
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