What is the difference between a static and a dynamic IP address?

A static IP address is a permanent address assigned to a device that does not change over time. It is fixed and typically used for servers, network equipment, or services that require a constant address for access.

A dynamic IP address is temporarily allocated to a device from the provider's or local network's address pool and can change with each connection or after a certain period. Dynamic addresses are usually used for regular users and home devices.

Main differences:

• Permanence: static does not change, dynamic can change.
• Configuration: static requires manual setup or reservation, dynamic is assigned automatically via DHCP.
• Usage: static is suitable for servers and services, dynamic for clients and devices with intermittent connections.

Example: a web server needs a static IP so clients can always reach it at the same address, while a home laptop usually receives a dynamic IP from the router.