(a) Mention any three Service faults in the game of Volleyball. (b) During a match, a back zone…

(a) Mention any three Service faults in the game of Volleyball. (b) During a match, a back zone player crosses the attack line and smashes from the front zone. What decision will be given by the Referee? (c) What will be the decision of the Referee if a libero player substitutes himself with another player without the Referee’s approval?