consider the communication protocol between a client and a server which satisfies only 4 types of messages can be transmitted O: open a communication channel C: close a communication channel Rt: request a message Ry: reply to a message

every communication message behins with open and ends with close

every request Rt must be followed by the reply Ry and no unsolicited reply may occur

Q1) Design DFA,A that accepts all legal sequence of message. define all element pf M- state, symbol, initial and find transition ft in the form of a transition table

Q2)represent M in a transition diagram