Subnetare:
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	Plaja IP organizationala:	209.165.0.0 / 22
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	Cerinte:
	--------
		-> LAN1: 200 H	-> 200 <= 2^x ; x = 8	; Prefix: /24
		-> LAN2: 350 H	-> 350 <= 2^x ; x = 9	; Prefix: /23
		-> LAN3:  80 H	->  80 <= 2^x ; x = 7	; Prefix: /25
		-> WAN1:   2 H	->   4 <= 2^x ; x = 2	; Prefix: /30
		-> WAN2:   2 H	->   4 <= 2^x ; x = 2	; Prefix: /30
		-> WAN3:   2 H	->   4 <= 2^x ; x = 2	; Prefix: /30

	Subnneting:
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	209.165. (COMUN)