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In SONET, each synchronous transfer signal STS-n is composed of __________(a) 2000 frames(b) 4000 frames(c) 8000 frames(d) 16000 framesI got this question at a job interview.Asked question is from SONET in portion Wireless LAN’s, Electronic Mail and File Transfer of Computer Network

Answer»

Correct answer is (c) 8000 frames

Easiest EXPLANATION: SONET defines the electrical SIGNAL as STS-N (Synchronous Transport Signal Level-N) and the optical signal as OC-N (Optical CARRIER Level-N). The building block of SONET is the STS-1/OC-1 signal, which is based on an 8-kHz frame RATE and operates at 51.84 Mbps.



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