260  3     

				Router		
							,,........[	
	Bridge								Switch	
D 										11^
\ /									
	/	-									
										
				Switch				
							-j"-"-,3~^s		
					^				
			Hub					Switch^	
								!> ^		JJ.fS.-Sw~\
												
										
				/						

. 3.27.  

8.      Ethernet.

9.  ,  4     Ethernet.  
        . ,
     :

 Novell 802.2;

 Ethernet II;

 802.3/802.2

 Novell 802.3;

 Raw 802.3;

 Ethernet DIX;

 802.3/LLC;

 Ethernet SNAP.

10.     ,     Ethernet 
?

11.       Ethernet    ?

12.   MTU    ?    
 ?      ?

13.        Ethernet?

14.     Ethernet     -
 ,   (, Fast Ethernet  Ethernet),    
    ?