Except as otherwise provided in this title, a person may not provide, attempt to provide, or offer to provide real estate brokerage services unless licensed by the Commission as a real estate broker. Except as otherwise provided in this title, a person may not, on behalf of a real estate broker, provide, attempt to provide, or offer to provide real estate brokerage services unless licensed by the Commission as an associate real estate broker or a real estate salesperson to provide real estate brokerage services for that real estate broker.