CCNA Success: Mastering Binary Math And Subnetting by Bryant Chris

Author:Bryant, Chris [Bryant, Chris]
Language: eng
Format: epub
Publisher: The Bryant Advantage
Published: 2013-10-24T00:00:00+00:00

10.191.1.1 /10

Convert the address and add the first 10 bits to get the subnet.

10.191.1.1 = 00001010 10xxxxxx xxxxxxxx xxxxxxxx

Add the first 10 bits and you have 10.128.0.0 /10.

187.23.191.95 /27

Convert it, add the first 27 bits, you have the subnet!

187.23.191.95 = 10111011 00010111 10111111 010xxxxx

Add the first 27 bits and you have 187.23.191.64 /27 (255.255.255.224).

222.17.32.244 /28

Convert the address, add the first 28 bits, done!

222.17.32.244 = 11011110 00010001 00100000 1111xxxx

The first 28 bits add up to 222.17.32.240 /28 (255.255.255.240).

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