5. Consider a host machine running an implementation of the TCP/IP protocol stack. (i) Identify how the PDUs from each of the layers would appear (in the correct order) in an outgoing stream of bits leaving this host and entering the local network. In your answer represent the PDUs in their simplest form i.e. as a Header field and a Data field. (5 marks) (ii) If this stream of bits arrives at a router identify: which PDUs would be examined by the Router, which PDUs would pass through the Router unchanged and which PDUs would be changed. (5 marks) (iii) Upon arrival at the destination host explain what happens to the PDUs as they pass through the protocol stack