DSL चे विस्तारीत रूप

The correct answer is Option A (Digital Subscriber Line).

Key Points:
• DSL stands for Digital Subscriber Line.
• It is a broadband telecommunications technology used to transmit high-speed digital data over conventional local telephone lines (twisted pair copper wire).
• Because DSL transmits digital frequencies at a higher band than voice calls, it allows users to access high-speed internet and make regular voice telephone calls simultaneously over the same telephone wire.
• Common variants include ADSL (Asymmetric Digital Subscriber Line, where download speed exceeds upload speed) and SDSL (Symmetric Digital Subscriber Line).
• The official MPSC final answer key confirms Option 1 (Digital Subscriber Line).
• Key Takeaway: DSL stands for Digital Subscriber Line, providing high-speed broadband over existing telephone wires.