Q. Which one of the following links all the ATMs in India?
Answer: National Payments Corporation of India
Notes: The correct answer is [C] National Payments Corporation of India. The National Payments Corporation of India (NPCI) is the umbrella organization for operating retail payments and settlement systems in India.

• National Financial Switch (NFS) (Statement C – Correct): The NPCI manages the National Financial Switch, which is the largest network of shared Automated Teller Machines (ATMs) in India. It was designed to interconnect the ATMs in the country and facilitate convenience banking.
• Indian Banks' Association (Statement A – Incorrect): The IBA is a representative body of management of banking in India. While it originally conceptualized the National Financial Switch in 2004, it handed over the operations to the Institute for Development and Research in Banking Technology (IDRBT), which later transferred it to the NPCI in 2009.
• National Securities Depository Limited (Statement B – Incorrect): NSDL is a central securities depository that deals with the holding of securities (like shares and bonds) in electronic form. it has no role in ATM networking.
• Reserve Bank of India (Statement D – Incorrect): The RBI is the central bank and the regulatory authority for the entire banking system. While it facilitated the creation of NPCI, it does not directly manage the day-to-day linking or operations of the ATM network.

The NPCI is a "not-for-profit" company established under the provisions of Section 25 of the Companies Act 1956 (now Section 8 of the Companies Act 2013), aimed at providing infrastructure to the entire banking system in India for physical as well as electronic payment and settlement systems.