Final answer:
The address type in NAT that refers to the globally routable IPv4 address of a destination host on the Internet is the 'Outside global address'. This address allows internet hosts outside of the private network to be uniquely identified.
Step-by-step explanation:
The address type that refers to the globally routable IPv4 address of a destination host on the Internet in NAT terms is the Outside global address.An Outside global address is an IPv4 address assigned to a host on the Internet and is globally unique. This address allows the host to be reached from anywhere on the Internet.For example, if a user's computer is assigned the global IP address 203.0.113.1, and someone from a different network wants to access a server on this computer, they would use the Outside global address 203.0.113.1.In Network Address Translation (NAT) terms, the address type that refers to the globally routable IPv4 address of a destination host on the Internet is known as the Outside global address.
This address is used to identify host systems on the Internet that are outside the NAT device user's private network. In contrast:Inside local address refers to an IP address assigned to a device within the private network, not typically routable on the public Internet.Inside global address refers to a globally routable IPv4 address that represents one or more inside local addresses to the outside world.Outside local address may refer to the IP address of an outside host as seen from the inside network, but not necessarily the address used by the world at large.Therefore, the correct answer is d) Outside global address.