[Internet-e-architetture-di-rete] esercizi VLSM IPv4

[Antonio Prado]

On 21/05/16 23:17, Umberto Biondi wrote:
> ###########################
> 1.
> Addr      0.  1.  2.  3
> Mask    255.255.0.0
> 
> 00000000.00000001.00000010.00000011
> 11111111.11111111.00000000.00000000
> 
> Net             0.1.0.0
> Broadcast       0.1.255.255
> Hosts           2^16-2=65534

ok

> ###########################
> 2.
> Addr      0.  1.  2.  3
> Mask    255.254.0.0
> 
> 00000000.00000001.00000010.00000011
> 11111111.11111110.00000000.00000000
> 
> Net             0.0.0.0
> Broadcast       0.1.255.255
> Hosts           2^17-2=131070

ok

> ###########################
> 3.
> Addr      0.  1.  2.  3
> Mask    254.0.0.0
> 
> 00000000.00000001.00000010.00000011
> 11111110.00000000.00000000.00000000
> 
> Net             0.0.0.0
> Broadcast       1.255.255.255
> Hosts           2^25-2=33554430

ok

> ###########################
> 4.
> Addr      0.  1.  2.  3
> Mask    192.0.0.0
> 
> 00000000.00000001.00000010.00000011
> 11000000.00000000.00000000.00000000
> 
> Net             0.0.0.0
> Broadcast       63.255.255.255
> Hosts           2^30-2=1073741822

ok

> ###########################
> 5.
> Addr      0.  1.  2.  3
> Mask    240.0.0.0
> 
> 00000000.00000001.00000010.00000011
> 11110000.00000000.00000000.00000000
> 
> Net             0.0.0.0
> Broadcast       15.255.255.255
> Hosts           2^28-2=268435454

ok

> ###########################
> 6.
> Addr      0.  1.  2.  3
> Mask    255.255.255.240
> 
> 00000000.00000001.00000010.00000011
> 11111111.11111111.11111111.11110000
> 
> Net             0.1.2.0
> Broadcast       0.1.2.15
> Hosts           2^4-2=14

ok

> ###########################
> 7.
> Addr      0.  1.  2.  3
> Mask    255.255.255.252
> 
> 00000000.00000001.00000010.00000011
> 11111111.11111111.11111111.11111100
> 
> Net             0.1.2.0
> Broadcast       0.1.2.3
> Hosts           2^2-2=2

ok

> ###########################
> 8.
> Addr      0.  1.  2.  3
> Mask    255.255.255.1
> 
> 00000000.00000001.00000010.00000011
> 11111111.11111111.11111111.11111110
> 
> Net             0.1.2.2
> Broadcast       0.1.2.2
> Hosts           2^1-2=0
> 
> NON VALIDO

ko, procedi bit per bit

> ###########################
> 9.
> Addr      0.  1.  2.  3
> Mask    255.255.64.0
> 00000000.00000001.00000010.00000011
> 11111111.11111111.01000000.00000000
> 
> Net             0.1.0.0
> Broadcast       0.1.0.3
> Hosts           2^0-2=-1
> 
> NON VALIDO

ko, procedi bit per bit

> ###########################
> 10.
> Addr      0.  1.  2.  3
> Mask    255.255.0.255
> 
> 00000000.00000001.00000010.00000011
> 11111111.11111111.00000000.11111111
> 
> Net             0.1.0.4
> Broadcast       0.1.0.4
> Hosts           2^8-2=254
> 
> NON VALIDO
> #################

ko, procedi bit per bit

grazie
--
antonio


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