Which of the following IP addresses is a private IP address?

A. 12.0.0.1
B. 168.172.19.39
C. 172.20.14.36
D. 172.33.194.30
E. 192.168.42.34


Answer: C, E


Explanation:
RFC 1918 Private Address Space:
Range of IP Addresses Class of Networks Number of Network

10.0.0.0 to
10.255.255.255.255

A 1
172.16.0.0 to
172.31.255.255

B 16
192.168.0.0 to
192.168.255.255

C 256