5. De 1.0.0.0 a 126.255.255.255 De 128.0.0.0 a 191.255.255.255 De 192.0.0.0 a 223.255.255.255
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7. Fórmula importante: nº redes ou nº hosts = 2 n – 2 n- número de bits Classes 1º Octeto decimal 1º Octeto – Bit de 1ª ordem ID da Rede/ ID do host Máscara Nº de Redes Nº de PC´s A 1 – 126 * 0 R.H.H.H 255.0.0.0 2 7 – 2 =126 2 24 – 2 =16777214 B 128 – 191 10 R.R.H.H 255. 255.0.0 2 14 – 2 =16382 2 16 – 2 =65534 C 192 – 223 110 R.R.R.H 255. 255. 255. 0 2 21 – 2 =2097150 2 8 – 2 =254 D 224 – 239 1110 E 240 – 254 11110
8. A que rede pertence o endereço 192.168.1.3? Tabela de routing E0 192.168.1.0 E1 10.0.0.0
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20. Sabemos que o broadcast é sempre 255 (11111111) 10101100 . 00010000 . 00000010 . 00010001 11111111 . 11111111 . 00000000 . 00000000 10101100 . 00010000 . 00000000 . 00000000 . 11111111 . 11111111 AND 172.16.2.17 255.255.0.0 Rede Broadcast Rede = 172.16.0.0 Broadcast = 172.16.255.255 Então quais são os endereços válidos? DE 172.16.0.1 A 172.16.255.254
21. Sabemos que o broadcast é sempre 255 (11111111) 00001010 . 00000000 . 00000000 . 00010001 11111111 . 00000000 . 00000000 . 00000000 00001010 . 00000000 . 00000000 . 00000000 . 11111111 . 11111111 . 11111111 AND 10.0.0.17 255.0.0.0 Rede Broadcast Rede = 10.0.0.0 Broadcast = 10.255.255.255 Então quais são os endereços válidos? DE 10.0.0.1 A 10.255.255.254
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Notas do Editor
An enterprise that decides to use IP addresses out of the address space defined in this document can do so without any coordination with IANA or an Internet registry. The address space can thus be used by many enterprises. Addresses within this private address space will only be unique within the enterprise, or the set of enterprises which choose to cooperate over this space so they may communicate with each other in their own private internet.