What is the main responsibility of Internet Protocol (IP)?

The primary responsibility of Internet Protocol (IP) is addressing hosts and routing datagrams. This is a fundamental aspect of how devices communicate over a network. IP is responsible for assigning unique addresses to each device on a network, which enables the identification and location of devices when data packets are transmitted between them.

Furthermore, IP facilitates the routing of these datagrams, which are packets of data that include information about their source, destination, and the data they carry. The IP protocols make decisions about the best path for data to travel, ensuring that information can be efficiently delivered to its intended recipient.

In contrast, monitoring network security is typically the role of firewalls and security protocols rather than IP itself. Managing connected devices falls under the purview of network management protocols and systems, while providing internet access involves a broader set of technologies and protocols beyond just IP. Thus, the focus of Internet Protocol is specifically on addressing and routing, making it the correct choice.