Show the switch table AFTER the entire packet sequence is finshed.

  Computer (MAC address)  switch port #        Assume this is the
  ----------------------  -------------        switch table to begin
         P3                    A               with.  It has apparently
         P9                    D               only been brought up
         P7                    C               or reset very recently.

   p1    p3                                        p4
   |     |                                         |
   |     |         ---------------------           |
 -----------------A|                   |B------------------------p6
     |             |                   |                |
     |             |   SWITCH          |                |
     p2            |    with           |                p5
                   |    four ports     |
        p8         |    (A,B,C and D)  |        p9 
        |          |                   |        |
        |          |                   |        |
 -----------------C|                   |D--------------------
   |               ---------------------              |
   |                                                  |
   p7                                                 p10
        Here is the packet sequence.
        Assume that the packets arrived at the switch and were
        processed in the order shown, from first to last;

        Packet Packet source Packet destination
        ------ ------------- ------------------
          1         P1              P2
          2         P5              P9
          3         P4              P2
          4         P7              P8
          5         P10             P3
          6         P9              P10
          7         P10             P1

    Indicate whether each packet was filtered, flooded or forwarded
    by the switch.  Indicate whether filter, flood or forward is used.

  Computer (MAC address)  switch port #        
  ----------------------  -------------        
         P3                    A              
         P9                    D              
         P7                    C            
         P1                    A      <------ After packet #1
         P5                    B      <------ After packet #2
         P4                    B      <------ After packet #3
         P10                   D      <------ After packet #5
         
   The 4th, 6th and 7th packets cause no change to the switches
     routing table, because the source address is already in the
     table, i.e. is already known.  That device's Mac address and
     port number are already known.  They were "learned" previously
     by the switch.

        Packet Packet source Packet destination   Switch action
        ------ ------------- ------------------   -------------
          1         P1              P2            Flooding (ports B,C,D).

          2         P5              P9            Forward (out port D).
          3         P4              P2            Flood (ports A,C,D).
          4         P7              P8            Flood (ports A,B,D).
          5         P10             P3            Forward (thru port A).
          6         P9              P10           Filter (it came in port D,
                                                          and port D is 
                                                          destination port).
          7         P10             P1            Forward (thru port A).