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Binary Lesson 5.5 Usable Addresses Class A, B, and C

Binary Lesson 5.5 Usable Addresses Class A, B, and C. Slash Notation. Consider a class A address of 1.2.3.4 The network portion is the first octet 1 This situation can be written 1.2.3.4/8 The number after the / is the number of bits in the network portion. Subnet Mask.

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Binary Lesson 5.5 Usable Addresses Class A, B, and C

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  1. Binary Lesson 5.5Usable Addresses Class A, B, and C

  2. Slash Notation • Consider a class A address of 1.2.3.4 • The network portion is the first octet • 1 • This situation can be written • 1.2.3.4/8 • The number after the / is the number of bits in the network portion

  3. Subnet Mask Consider a class A address of 1.2.3.4 /8 in binary The subnet mask is 255.0.0.0 The network address is 1.0.0.0 In Binary: IP: 00000001 00000010 00000011 00000100 Subnt Msk: 11111111 00000000 00000000 00000000 Net Addr: 00000001 00000000 00000000 00000000

  4. Network Address To find the network address, take a node's IP address and set all the host bits to 0 IP: 00000001 00000010 00000011 00000100 Subnt Msk: 11111111 00000000 00000000 00000000 NNNNNNNN HHHHHHHH HHHHHHHH HHHHHHHH Net Addr: 00000001 00000000 00000000 00000000 In decimal: IP: 1 2 3 0 Subnt Msk: 255 0 0 0 Net Addr: 1 0 0 0

  5. Broadcast Address To find the broadcast address, take a node's IP address and set all the host bits to 1 IP: 00000001 00000010 00000011 00000100 Subnt Msk: 11111111 00000000 00000000 00000000 NNNNNNNN HHHHHHHH HHHHHHHH HHHHHHHH Brdc Addr: 00000001 11111111 11111111 11111111 In decimal: IP: 1 2 3 0 Subnt Msk: 255 0 0 0 Brdc Addr: 1 255 255 255

  6. Usable Addresses All the other addresses are usable--starting at network address + 1 and ending at broadcast address -1 Network Addr: 1. 0. 0. 0 Subnet Mask: 255. 0. 0. 0 Broadcast Addr: 1.255.255.255 First Usable Addr: 1. 0. 0. 1 Last Usable Addr: 1.255.255.254

  7. Class B Class B address: 147.144.1.212 /16 The subnet mask is 255.255.0.0 The network address is 147.144.0.0 The broadcast address is 147.144.255.255 In Binary: IP: 10010011 10010000 00000001 11010100 Subnt Msk: 11111111 11111111 00000000 00000000 Net Addr: 10010011 10010000 00000000 00000000 Brdc Addr: 10010011 10010000 11111111 11111111

  8. Class B Usable Addresses Class B address: 147.144.1.212 /16 The subnet mask is 255.255.0.0 The network address is 147.144.0.0 The broadcast address is 147.144.255.255 First usable address: 147.144.0.1 Last usable address: 147.144.255.254

  9. Class C Class C address: 192.168.1.10 /24 The subnet mask is 255.255.255.0 The network address is 192.168.1.0 The broadcast address is 192.168.1.255 In Binary: IP: 11000000 10101000 00000001 00001010 Subnt Msk: 11111111 11111111 11111111 00000000 Net Addr: 11000000 10101000 00000001 00000000 Brdc Addr: 11000000 10101000 00000001 11111111

  10. Usable Addresses Class A, B, and C iClicker Questions

  11. What is the network address in this network?15.254.222.199 /8 15.254.222.0 15.254.222.255 15.254.222.1 15.0.0.0 15.254.0.0 1 of 9

  12. What is the broadcast address in this network?10.20.30.40 /8 10.0.0.0 10.0.0.1 10.255.255.254 10.255.255.255 Something else 2 of 9

  13. What is the first usable address for this network?111.2.1.2 /8 111.0.0.1 111.2.0.1 111.2.1.1 111.2.255.255 Something else 3 of 9

  14. What is the last usable address for this network?19.144.1.212 /8 19.255.255.254 19.144.255.255 19.144.255.254 19.144.1.254 Something else 4 of 9

  15. What is the first usable address for this network?199.144.0.0 /24 199.0.0.1 199.144.0.1 199.144.1.1 199.144.1.255 Something else 5 of 9

  16. What is the last usable address for this network?222.0.14.0 /24 222.255.255.254 222.0.255.254 222.0.14.254 222.0.14.255 Something else 6 of 9

  17. What is the last usable address for this network?129.130.131.132 /16 129.130.131.254 129.130.255.254 129.255.255.254 129.130.0.1 Something else 7 of 9

  18. What is the broadcast address for this network?132.231.123.213 /16 132.231.123.254 132.231.123.255 132.231.255.255 132.255.255.254 Something else 8 of 9

  19. What is the network address for this network?200.0.14.128 /24 200.0.14.1 200.0.14.0 200.0.14.254 200.0.14.255 Something else 9 of 9

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