What is the primary purpose of a router in a network?

The primary purpose of a router in a network is to direct data packets between different networks. Routers function as intermediaries that receive data packets from one network, determine the best path for them based on the destination, and then forward them to their target network. This capability is essential for inter-network communication, allowing devices on separate networks, such as different local area networks (LANs) or a LAN and the Internet, to communicate effectively.

Routers analyze packet information, such as IP addresses, and make decisions using routing tables and protocols, ensuring that data travels along the most efficient routes. This is critical for maintaining connectivity and performance across larger, more complex network architectures.

While routers can also contribute to improving security through features like firewalls or access control lists, their main function is rooted in routing data. The other options focus on roles that may be associated with different networking devices or functions, such as switches for connecting devices within a single network, and access points for wireless connectivity. Hence, the distinctive function of a router makes it clear that directing data packets is its primary role.