The path layer of SONET is responsible for the movement of a signal _________(a) from its optical source to its optical destination(b) across a physical line(c) across a physical section(d) back to its optical sourceThis question was addressed to me in final exam.I'd like to ask this question from SONET topic in section Wireless LAN’s, Electronic Mail and File Transfer of Computer Network

The path layer of SONET is responsible for the movement of a signal __

1.	The path layer of SONET is responsible for the movement of a signal _________(a) from its optical source to its optical destination(b) across a physical line(c) across a physical section(d) back to its optical sourceThis question was addressed to me in final exam.I'd like to ask this question from SONET topic in section Wireless LAN’s, Electronic Mail and File Transfer of Computer Network
Answer» Right option is (B) across a PHYSICAL line The EXPLANATION: The path layer in SONET is responsible for finding the path of the signal across the physical line to reach the optical destination. It is IDEALLY expected to find the shortest and the most reliable path to the destination.

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