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Chapter 3
Internet Protocols
7.
192.168.100.17, with 4 bits of subnetting: Subnet is 192.168.100.16,
broadcast is 192.168.100.31, and valid host range is 192.168.100.17
through 30.
256
- 240 = 16. 16 + 16 = 32. Subnet is, then, 100.16, with a broad-
cast of 100.31 because 32 is the next subnet.
8.
192.168.100.66, with 3 bits of subnetting: Subnet is 192.168.100.64,
broadcast is 192.168.100.95, and valid host range is 192.168.100.65
through 94.
256
- 224 = 32. 32 + 32 = 64, plus 32 = 96. Subnet is 100.64, and
broadcast is 100.95.
9.
192.168.100.17 255.255.255.248: Subnet is 192.168.100.16, broad-
cast is 192.168.100.23, and valid host range is 192.168.100.17
through 22.
256
- 248 = 8. 8 + 8 = 16, plus 8 = 24. Subnet is 16, and broadcast
is 23.
10.
10.10.10.5 255.255.255.252: Subnet is 10.10.10.4, broadcast is
10.10.10.7, and valid hosts are 10.10.10.5 and 6.
256
- 252 = 4. 4 + 4 = 8.
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