A company needs to connect two different networks. Which device should be used?

A repeater amplifies and regenerates signals to extend the range of a network but does not connect different networks. It operates solely at the physical layer and is used to strengthen the signal within a single network rather than facilitating communication between separate networks.

A hub is a basic networking device that connects multiple devices within the same network segment but does not manage traffic or connect different networks. It operates at the physical layer and simply broadcasts incoming signals to all ports, making it inefficient for routing data between distinct networks.

A switch connects devices within the same network and facilitates communication between them by directing data packets to the correct devices based on MAC addresses. However, it does not connect different networks, operating at the data link layer instead of the network layer, limiting its functionality in inter-network communication.