What is a static IP address?

A static IP address is defined as an address that is assigned once and never changed throughout its operational life. This means that the device associated with the static IP will always use the same address, allowing for reliable connections and easier management of network resources.

Static IP addresses are beneficial for a variety of reasons. For instance, they are typically used for servers or devices that need consistent accessibility over the network, such as web servers, email servers, and network devices like routers. With a static IP, these devices can be easily found by other devices on the network without the risk of the address changing, which can cause disruptions in connectivity and complicate network configurations.

In contrast, the other options describe dynamic behaviors. A changing address and temporary address indicate that the IP may be reassigned regularly, typical of a dynamic IP address which is allocated by a DHCP server. This is beneficial for devices that don't require constant connectivity but does not provide the stability that a static IP offers. Therefore, the defining characteristic of a static IP address is its permanence and reliability within a network context.