Does a bank charge for Coin Exchange?

Excuse me, I'm curious about the financial implications of cryptocurrency transactions. Specifically, I'm wondering if traditional banks charge any fees when individuals or businesses engage in coin exchange transactions? Do they levy additional costs for converting between different digital currencies or fiat currencies? It's essential for me to understand the overall cost structure associated with these transactions to make informed decisions regarding my investments. Could you elaborate on the bank's policies and practices in this regard?