B. EXERCISE:identify the IP address class type and underline the network portion or subnet mask.
EXAMPLES:175.138.115.99 -CLASS B
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192.128.65.85 - CLASS C
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1.) 120.10.100.20
2.) 192.168.100.10
3.) 150.200.100.105
4.) 23.150.90.77
5.) 195.168.90.25​