Which type of device typically uses dynamic IP addresses?

Dynamic IP addresses are predominantly used by client devices that connect to a network. This allows for a more efficient allocation of the finite number of IP addresses available, particularly in environments where devices frequently join and leave the network, such as laptops, smartphones, and other personal devices.

When a client device connects to a network, it requests an IP address from a DHCP (Dynamic Host Configuration Protocol) server, which dynamically assigns an available IP address for a specific lease period. The dynamic assignment process helps in managing IP addresses effectively, as clients are assigned different IPs upon reconnecting to the network or when their current leases expire.

On the other hand, servers often require static IP addresses to ensure that they can be reliably reached at the same address over time. Routers and switches, being essential networking devices, can either use static or dynamic IP addresses depending on their configuration and the network design, but they are often assigned static addresses for ease of management and configuration in a networked environment.