1. Which of the following statements about a plain vanilla interest rate swap is most accurate?
   1. Only the net interest payments are made.
   2. The notional principal is exchanged at maturity.
   3. The notional principal is exchanged at initiation and at maturity.
   4. The fixed-rate payer typically pays a premium to enter the swap.
   5. The floating-rate payer typically pays a premium to enter the swap.