[Internet-e-architetture-di-rete] esercizi VLSM IPv4
Mauro Cecchi
mauro30061960 at gmail.com
Mon May 23 17:42:02 CEST 2016
###########################
01.
Addr 0. 1. 2. 3
Mask 255.255. 0. 0
Mask~ 0. 0.255.255
Net 0. 1. 0. 0
Bcast 0. 1.255.255
Hosts 2^16-2=65534
###########################
02.
Addr 0. 1. 2. 3
Mask 255.254. 0. 0
Mask~ 0. 1.255.255
Net 0. 0. 0. 0
Bcast 0. 1.255.255
Hosts 2^17-2=131070
###########################
03.
Addr 0. 1. 2. 3
Mask 254. 0. 0. 0
Mask~ 1.255.255.255
Net 0. 0. 0. 0
Bcast 1.255.255.255
Hosts 2^25-2=33554430
###########################
04.
Addr 0. 1. 2. 3
Mask 192. 0. 0. 0
Mask~ 63.255.255.255
Net 0. 0. 0. 0
Bcast 63.255.255.255
Hosts 2^30-2=1073741822
###########################
05.
Addr 0. 1. 2. 3
Mask 240. 0. 0. 0
Mask~ 15.255.255.255
Net 0. 0. 0. 0
Bcast 15.255.255.255
Hosts 2^28-2=268435454
###########################
06.
Addr 0. 1. 2. 3
Mask 255.255.255.240
Mask~ 0. 0. 0. 15
Net 0. 1. 2. 0
Bcast 0. 1. 2. 15
Hosts 2^4-2=14
###########################
07.
Addr 0. 1. 2. 3
Mask 255.255.255.252
Mask~ 0. 0. 0. 3
Net 0. 1. 2. 0
Bcast 0. 1. 2. 3
Hosts 2^2-2=2
###########################
08.
Addr 0. 1. 2. 3
Mask 255.255.255. 1
Mask~ 0. 0. 0.254
Net 0. 1. 2. 1
Bcast 0. 1. 2.255
Hosts 2^7-2=126
###########################
09.
Addr 0. 1. 2. 3
Mask 255.255. 64. 0
Mask~ 0. 0.191.255
Net 0. 1. 0. 0
Bcast 0. 1.191.255
Hosts 2*2^14-2=32766
###########################
10.
Addr 0. 1. 2. 3
Mask 255.255. 0.255
Mask~ 0. 0.255. 0
Net 0. 1. 0. 3
Bcast 0. 1.255. 3
Hosts 2^8-2=254
###########################
Mi sono appuntato per mia comodità la maschera di rete negata.
Grazie, ciao
-----Messaggio originale-----
From: Antonio Prado via Internet-e-architetture-di-rete
Sent: Friday, May 20, 2016 12:52 AM
To: internet-e-architetture-di-rete at list.informagiovani.comunesbt.it
Subject: [Internet-e-architetture-di-rete] esercizi VLSM IPv4
cari allievi,
stasera abbiamo conversato degli spazi di indirizzamento IPv4 e IPv6:
morfologia, notazione, subnetting.
vi propongo ora qualche esercizio che mi raccomando di iniziare sin da
subito finche' le idee sono fresche.
dunque, come preannunciato, per ciascun indirizzo dato provate a
calcolare inizio-rete, fine-rete e numero di host numerabili
(considerato che in IPv4 non sono assegnabili agli host l'indirizzo di
inizio rete e l'indirizzo di broadcast).
faccio un esempio su come formattare l'esercizio:
###########################
1.
Addr 1. 2. 3. 4
Mask 255.255.255. 0
Net 1.2.3.0
Broadcast 1.2.3.255
Hosts 2^8-2=254
###########################
ecco gli esercizi:
per i cognomi da A a L:
A-L.
Addr 0. 1. 2. 3
Mask 255.255. 0. 0
Mask 255.254. 0. 0
Mask 254. 0. 0. 0
Mask 192. 0. 0. 0
Mask 240. 0. 0. 0
Mask 255.255.255.240
Mask 255.255.255.252
Mask 255.255.255. 1
Mask 255.255. 64. 0
Mask 255.255. 0.255
per i cognomi da M a Z:
M-Z.
Addr 129.130.131.132
Mask 255.255. 0. 0
Mask 255.254. 0. 0
Mask 254. 0. 0. 0
Mask 192. 0. 0. 0
Mask 240. 0. 0. 0
Mask 255.255.255.240
Mask 255.255.255.252
Mask 255.255.255. 1
Mask 255.255. 64. 0
Mask 255.255. 0.255
ovviamente, come al solito, chiunque puo' partecipare alla
soluzione/discussione
grazie
--
antonio
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