What does configuring a static IP address on a device ensure?

Configuring a static IP address on a device ensures that the device's IP address does not change. A static IP address is manually assigned to a device and remains constant over time, allowing for consistent network identification and communication. This is particularly important for devices that need to be reliably accessed on a network, such as servers, printers, or networked storage devices.

With a static IP, the address associated with the device is fixed, making it easier for users and other devices on the network to locate and interact with it without the complications that may arise from dynamic IP allocation, where addresses can change. This is why a static IP is often preferred for devices that provide services or require stable connections.

In contrast, dynamic IP addresses can change each time a device connects to the network, leading to potential issues with access. The other options mentioned refer to functionalities unrelated to the fundamental characteristic of a static IP configuration. For instance, VPN connectivity and automatic address renewal involve different networking processes and protocols.