200-301 Question 90
Select 3A company is deploying a new internal application that will only be used within their private network. They decide to configure the servers with private IPv4 addresses. Which of the following address ranges can they use for private IPv4 addressing?
- A
10.0.0.0/8
- B
172.16.0.0/12
- C
192.168.0.0/16
- D
8.8.8.0/24
- E
169.254.0.0/16
Show answer and explanation
Correct answers: A, B, C
Explanation
Private IPv4 address ranges are defined by RFC 1918 and include 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. These ranges are designated for use within private networks and are not routable on the public internet. Addresses like 8.8.8.0/24 are public and cannot be used for private purposes, while 169.254.0.0/16 is reserved for link-local addressing and is not part of the private address space.
- A. Correct.
10.0.0.0/8 is a valid private IPv4 address range as defined by RFC 1918.
- B. Correct.
172.16.0.0/12 is a valid private IPv4 address range as defined by RFC 1918.
- C. Correct.
192.168.0.0/16 is a valid private IPv4 address range as defined by RFC 1918.
- D. Incorrect.
8.8.8.0/24 is a public IPv4 address range used by Google's public DNS servers, so it cannot be used for private addressing.
- E. Incorrect.
169.254.0.0/16 is reserved for link-local addressing, not private addressing, and is used when no DHCP server is available.