please answer the following! will upvote once answered thank you in advance!

(1) What are the differences in counterparty default risks between forward and futures contracts? (2) Consider the forward and futures contracts on the same underlying asset and having the same maturity. Under what circumstances can forward price and futures price be different? (4) If the cost of carry is positive and there is no convenience yield, can the forward price be lower than the spot price? (5) If the spot exchange rate between US dollar and Japanese Yen is $0.010 per Yen and the three-month forward rate is $0.011 per Yen, can you tell which country has higher interest rate, U.S. or Japan