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CompTIA DHTI+ Practice Questions

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Which of the following is not a private IP address range?
  1. 10.0.0.0 to 10.255.255.255
  2. 12.0.0.0 to 12.255.255.255
  3. 172.16.0.0 to 172.31.255.255
  4. 192.168.0.0 to 192.162.255.255
Explanation
Answer - B - 12.0.0.0 to 12.255.255.255 is not a private IP address range.

Key Takeaway: An IP address is private if it falls within one of the IP address ranges reserved for private uses by Internet standards groups. These private IP address include: 10.0.0.0 through 10.255.255.255, 169.254.0.0 through 169.254.255.255, 172.16.0.0 through 172.31.255.255, and 192.168.0.0 through 192.168.255.255. The computers outside the local network cannot connect directly to a device with a private IP residing in the internal network.
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