How many types of API functions are there in Node.js?

1.	How many types of API functions are there in Node.js?
Answer» There are two TYPES of API functions: ASYNCHRONOUS, non-blocking functions - MOSTLY I/O operations which can be fork out of the main loop. Synchronous, blocking functions - mostly operations that INFLUENCE the PROCESS running in the main loop.

Answer»

There are two TYPES of API functions:

ASYNCHRONOUS, non-blocking functions - MOSTLY I/O operations which can be fork out of the main loop.
Synchronous, blocking functions - mostly operations that INFLUENCE the PROCESS running in the main loop.

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