What piece of technology facilitates the exchange of information between computers?

The Internet is the correct answer as it serves as a global network of interconnected computers that communicate with each other, facilitating the exchange of information. This vast system allows for various forms of data transfer, including emails, website access, file sharing, and more, making it essential for connectivity and information sharing on a worldwide scale.

While routers, servers, and mainframes all play important roles in networking and data handling, they are components or systems that operate within the broader context of the Internet. Routers direct data traffic between networks, servers store and serve data to clients, and mainframes are powerful computers that handle large volumes of transactions and data processing. However, none of these concepts can operate independently of the Internet or provide the extensive reach for information exchange that the Internet offers.