A user gets an IP address of 192.168.0.1 from the company network administrator. A friend of the user at a different company gets the same IP address on another PC. How can two PCs use the same IP address and still reach the Internet, send and receive email, and search the web?
ISPs use Network Address Translation to change a user IP address into an address that can be used on the Internet.
Both users must be using the same Internet Service Provider.
Both users must be on the same network.
ISPs use Domain Name Service to change a user IP address into a public IP address that can be used on the Internet.