Which of the following is a public IP address?

The correct answer is B. 55.5.254.1. The three private (RFC 1918) IP address ranges are: 10.0.0.0–10.255.255.255, 172.16.0.0–172.31.255.255, and 192.168.0.0–192.168.255.255. Option A (10.4.160.1) falls in the Class A private range, option C (172.17.45.12) falls in the Class B private range, and option D…

Networking

Question

Options

A10.4.160.1
B55.5.254.1
C172.17.45.12
D192.168.100.100

How the community answered

(35 responses)

A
3% (1)
B
91% (32)
D
6% (2)

Explanation

The three private (RFC 1918) IP address ranges are: 10.0.0.0–10.255.255.255, 172.16.0.0–172.31.255.255, and 192.168.0.0–192.168.255.255. Option A (10.4.160.1) falls in the Class A private range, option C (172.17.45.12) falls in the Class B private range, and option D (192.168.100.100) falls in the Class C private range. Option B (55.5.254.1) does not fall within any private range and is therefore a publicly routable IP address.

Topics

#public IP#private IP ranges#IP addressing#RFC 1918

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