Posted by: Pdfprep
Post Date: December 10, 2020
Which of the following are optical-layer trails? (Multiple Choice)
A . OCh
B . OMS
C . OTS
D . OSC
Answer: ABCD
Which of the following are optical-layer trails? (Multiple Choice)
A . OCh
B . OMS
C . OTS
D . OSC
Answer: ABCD