Which protocol is responsible for facilitating Internet communication?

The protocol responsible for facilitating Internet communication is TCP/IP, which stands for Transmission Control Protocol/Internet Protocol. TCP/IP is a fundamental suite of communication protocols that governs how data is transmitted across the Internet. It establishes rules for data packaging, addressing, transmission, routing, and error checking, ensuring that information can travel from one device to another seamlessly.

TCP/IP consists of two main protocols: TCP, which manages how data packets are assembled and ensures reliable transmission, and IP, which handles the delivery of packets to their destination based on addressing. This combination allows for the robust and flexible communication necessary for the modern Internet environment.

While other options like FTP (File Transfer Protocol) and HTTP (Hypertext Transfer Protocol) are specific applications that run on top of the TCP/IP suite, they are not standalone protocols for Internet communication in the same way. FTP specifically deals with file transfers, and HTTP is used for transferring web pages. HTML (Hypertext Markup Language) is a markup language used for creating web content but does not perform communication itself. Thus, TCP/IP is the correct choice as it forms the backbone of Internet communication.