When you are exchanging USD to JPY, you want to know the exchange rate before you proceed with the transaction. The same pattern is expected for XRP and other cryptocurrency exchange.
Ripple refers to a payment protocol developed in 2012 by a company called Ripple labs inc. Ripple is a distributed ledger consensus system that not only facilitates the transfer of cryptocurrencies but also allows for the transfer of traditional fiat currencies as well.
The native currency on the Ripple platform is called XRP. Ripple is widely celebrated for its lightning speed pace in completing transactions. It is faster than the traditional money transfer SWIFT protocol.