Question

Identify the IP address that is the inside global IP address. (NOTE: To avoid using an organization's actual IP addresses in this question, all IP addresses are technically private IP addresses. However, assume that the network and the IP address are publicly routable.)

a) 192.168.1.1
b) 10.0.0.1
c) 172.16.1.1
d) 203.0.113.1

Answer 1

The inside global IP address from the given options is '203.0.113.1', as it is not part of the private IP address ranges and is assumed to be publicly routable in this context.

Step-by-step explanation:

The question asks to identify the inside global IP address from a list of options. In the context of network address translation (NAT), an inside global address is a publicly routable IP address that represents one or more inside local IP addresses (usually private) to the outside world. Looking at the options provided, '203.0.113.1' is the IP address that is considered to be an inside global IP address. This is because the addresses in the ranges 192.168.x.x, 10.x.x.x, and 172.16.x.x to 172.31.x.x are defined by the RFC 1918 as private IP addresses and are not publicly routable, while the address 203.0.113.1 is part of a range specifically earmarked for use in documentation and example code, which is publicly routable for the purposes of this question.