The internet works through fiber optic cables that span the globe, connecting data centers to users via unique IP addresses and DNS technology, enabling data transfer through light pulses and electrical signals.

The internet's data transmission is facilitated by a complex network of fiber optic cables that span the globe, connecting data centers to users through landing stations on ocean shores. This intricate system ensures efficient data transfer despite the vast distances involved.

The chapter explains how every device on the internet is identified by a unique IP address, including servers and personal devices like phones and laptops. It delves into the role of DNS in associating domain names with IP addresses, enabling easier access for users.