a) Describe the simple message ordering in HTTP. 

b) In HTTP, can the server transmit if it has not received a request message from the client? 

c) Describe the three-step handshake in TCP connection openings. 

d) What kind of message does the destination host send if it does not receive a segment during a TCP connection? 

e) What kind of message does the destination host send if it receives a segment that has an error during a TCP connection? 

f) Under what conditions will a source host TCP process retransmit a segment? 

g) Describe the four-step handshake in TCP connection closes. 

h) After a side initiates the close of a connection by sending a FIN segment, will it send any more segments? Explain.