1. Media Dependent Interface
2. Media Independent Interface

My understanding is 2. is an interface between PHY chip and MAC block on the board. PHY chip can be on the board, or detachable. It is rather PHY chip independent rather than being cable independent. 1. is a Medium dependent part of PHY chip.

My questions are

A. Is Media Independent Interface cable independent?

B. Between which two things are MDI and MII interfaces?