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CITS3002 Computer Networks - Tutorial 5

1. What are some of the motivations behind the reserved port scheme used in IPv4?

   What problems would arise if such a scheme did not exist?

   Can you suggest other mechanisms to resolve these problems (are there solutions already employed in other areas)?
   
   

2. Draw a diagram showing the packet structure of a single Ethernet packet carrying an email message using TCP/IP.

   Identify all fields providing the source/destination connectedness, employed by protocols in various layers.