1. Difference between PDH and SDH 2. PDH and SDH multiplexing 3. SDH frame Structure (Higher Order Bytes - G1/C2) 4. SDH protection (SNCP, MSP, MSSP) 5. What is Ethernet over SDH (EoSDH) 6. What is VCAT/LCAS/GFP 7. What are Higher order bytes (HO-POH) bytes 8. Scenario based - If their is fiber cut between Customer equipment and network device, what are all the troubleshooting steps?

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Interview questions for Network Consultant (Transmission) covering PDH, SDH, multiplexing, frame structure, protection, troubleshooting, and more.

PDH and SDH differ in terms of bit rate, frame structure, and multiplexing techniques
PDH multiplexing is based on TDM, while SDH uses a synchronous multiplexing technique
SDH frame structure consists of higher order and lower order bytes, with G1/C2 being higher order bytes
SDH protection mechanisms include SNCP, MSP, and MSSP
Ethernet over SDH (EoSDH) is a technique for transmitting Ethernet frames over SDH networks
VCAT, LCAS, and GFP are techniques used for efficient bandwidth utilization in SDH networks
Higher order bytes (HO-POH) are used for signaling and management purposes in SDH networks
In case of a fiber cut between customer equipment and network device, troubleshooting steps include checking fiber continuity, checking power levels, and identifying the location of the cut

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