Watchguard Network Security Practice Test

Which of these options are private IPv4 addresses you can assign to a trusted interface?

1. 192.168.50.1/24

2. 10.50.1.1/16

3. 198.51.100.1/24

4. 172.16.0.1/16

The correct answer is: 10.50.1.1/16

The private IPv4 addresses as defined by the Internet Assigned Numbers Authority (IANA) are designated ranges that do not allow direct access to the public internet and are suitable for internal use within private networks. In this specific case, the correct options for private IPv4 addresses include address ranges: - 10.0.0.0 to 10.255.255.255 (indicated by the subnet mask /8), - 172.16.0.0 to 172.31.255.255 (indicated by the subnet mask /12), - 192.168.0.0 to 192.168.255.255 (indicated by the subnet mask /16). Among the choices listed, the addresses 192.168.50.1/24 and 172.16.0.1/16 are indeed private, as they fall within the recognized private IP address ranges. However, an effective private address assignment can also depend on the context and intended network setup, such as the configured subnet mask. The address 10.50.1.1/16 is private and provides a broad range for networking in this context; however, this address is not the sole option recognized in the framework of