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: 192.168.50.1/24

The correct choice includes private IPv4 addresses defined by the Internet Engineering Task Force (IETF) in RFC 1918. There are three ranges of IP addresses specified for private use: 1. 10.0.0.0 to 10.255.255.255 2. 172.16.0.0 to 172.31.255.255 3. 192.168.0.0 to 192.168.255.255 In this question, both 192.168.50.1/24 and 10.50.1.1/16 are indeed private IPv4 addresses, as they fall within the ranges outlined above. However, 198.51.100.1/24 is part of a block reserved for documentation and examples (not for private use), which means it cannot be assigned as a private address. The range 172.16.0.1/16 also represents a valid private address, so while the answer provided states 192.168.50.1/24 as the only correct option, both this address and the one listed as 10.50.1.1/16 are private according to the standards. Thus, while choice A