The photonic layer of the SONET is similar to the __________ of OSI model.(a) network layer(b) data link layer(c) physical layer(d) transport layerThe question was posed to me in an interview for internship.I need to ask this question from SONET topic in division Wireless LAN’s, Electronic Mail and File Transfer of Computer Network

The photonic layer of the SONET is similar to the __________ of OSI mo

1.	The photonic layer of the SONET is similar to the __________ of OSI model.(a) network layer(b) data link layer(c) physical layer(d) transport layerThe question was posed to me in an interview for internship.I need to ask this question from SONET topic in division Wireless LAN’s, Electronic Mail and File Transfer of Computer Network
Answer» The correct ANSWER is (c) PHYSICAL layer The explanation is: The PHOTONIC layer in SONET is like the physical layer of the OSI model. It is the lowest layer AMONG the four layers of SONET namely the photonic, the section, the line, and the PATH layers.

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