Foreign exchange risk and exposure refer to how changes in exchange rates can affect the value of a firm's assets, liabilities, and profits. Exposure is the sensitivity of a firm's value to exchange rate changes, while risk is the variability of a firm's value due to uncertain exchange rate changes. There are three main types of exposures - transaction, translation, and economic. Firms can use hedging strategies like forward contracts and options to manage their foreign exchange risk and exposure by locking in exchange rates for future transactions.