In TCP/IP, what does IP primarily handle?

In the context of TCP/IP, the primary function of IP (Internet Protocol) is to manage the moving of packets across networks. IP is responsible for routing packets from the source to the destination address, ensuring that they traverse various interconnected networks effectively. It focuses on addressing and delivering packets without guaranteeing their order or reliability, which is handled by upper-layer protocols.

Regarding the other functions mentioned in the choices, while disassembling and reassembling of packets can occur, this process is more accurately associated with the transport layer, specifically by protocols such as TCP (Transmission Control Protocol), which handles the sequencing and error-checking of packets. Establishing an Internet connection is not a function of IP; instead, it is facilitated by protocols within the transport layer as well. Sequencing the transfer of packets is also handled by TCP, which ensures that packets reach their destination in the correct order. Thus, the correct understanding of IP is that its primary role is the movement and routing of packets over the network.