Podziel sieć o adresie IP 172.20.144.0/22 na podsieci mieszczące po: 400, 10, 15, 220
hostów.

400 hostow:

402 -> 2^9 = 512
32 - 9 = 23 -> nowa maska

‭10101100‬	00010100‬	‭‭10010000	00000000
11111111	11111111	11111110	00000000
========	========	========	========
‭10101100‬	00010100‬	‭‭10010000	00000000	network: 172.20.144.0 / 23
‭10101100‬	00010100‬	‭‭10010001	11111111	broadcast: 172.20.145.255

host min = 172.20.144.1	(network + 1)
host max = 172.20.145.254 (broadcast -1)
hosty: 510

nastepny wolny adres po 172.20.145.255(broadcast) to 172.20.146.0
=============================================================================

172.20.146.0 na 220 hostow:

222 -> 2^8 = 256
32 - 8 = 24 -> nowa maska

‭10101100‬	00010100‬	‭‭10010010	00000000
11111111	11111111	11111111	00000000
========	========	========	========
‭10101100‬	00010100‬	‭‭10010010	00000000	network: 172.20.146.0 / 24
‭10101100‬	00010100‬	‭‭10010010	11111111	broadcast: 172.20.146.255

host min = 172.20.146.1
host max = 172.20.146.254
hosty: 254

nastepny wolny adres po 172.20.145.255(broadcast) to 172.20.147.0
=============================================================================

172.20.147.0 na 15 hostow:

17 -> 2^5 = 32
32 - 5 = 27

‭10101100‬	00010100‬	‭‭10010011	00000000
11111111	11111111	11111111	11100000
========	========	========	========
10101100‬	00010100‬	‭‭10010011	00000000	network: 172.20.147.0 / 27
‭10101100‬	00010100‬	‭‭10010011	00011111	broadcast: 172.20.147.31

host min: 172.20.147.1
host max: 172.20.147.30
hosty 30:

nastepny wolny adres po 172.20.147.31(broadcast) to 172.20.147.32
=============================================================================

172.20.147.32 na 10 hostow:

10 -> 2^4 = 16
32 - 4 = 28

‭10101100‬	00010100‬	‭‭10010011	00100000
11111111	11111111	11111111	11110000
========	========	========	========
10101100‬	00010100‬	‭‭10010011	00100000	network: 172.20.147.32 / 28
10101100‬	00010100‬	‭‭10010011	00101111	broadcast: 172.20.147.55

host min: 172.20.147.33
host max: 172.20.147.54
hosty: 14

wyniki:

172.20.144.0 / 23
172.20.146.0 / 24
172.20.147.0 / 27
172.20.147.32 / 28

=============================================================================
=============================================================================
Podziel sieć o adresie IP 10.10.32.0/21 na 4 maksymalnie duże, równe podsieci.
=============================================================================
=============================================================================

10.10.32.0/21

2^x = n
x -> liczba bitow
n -> liczba podsieci

dzielenie na 4

2^2 = 4
liczba bitow = 2

21 + 2 = 23 nowa maska
2^(32 - 23) - 2 =
2^ 9 - 2 = 512 - 2 = 510

10.10.32.0/23 			dzielimy na 510 hostow:

10.10.32.0 + 510 = 10.10.34.0

10.10.34.0 + 510 = 10.10.36.0

10.10.36.0 + 510 = 10.10.38.0 / 23
				   10.10.39.255 broadcast

min host: 10.10.38.1
max host: 10.10.39.254