Which technology will provide the correct IP address when reconfiguring a firewall?

The correct choice for providing the correct IP address when reconfiguring a firewall is DHCP (Dynamic Host Configuration Protocol). DHCP is a network management protocol used to automate the process of configuring devices on IP networks, allowing them to communicate effectively.

When a device (such as a firewall) connects to a network, it can request an IP address from a DHCP server, which then assigns an available IP address from a defined range (also known as a scope). This process not only assigns an IP address but can also provide additional configuration information such as the subnet mask, default gateway, and DNS server addresses. This capability is particularly useful when reconfiguring devices, as it ensures that they receive the correct network settings without manual intervention, thereby reducing errors and administrative overhead.

With regard to the other options, ARP (Address Resolution Protocol) does not provide IP addresses; instead, it maps IP addresses to physical MAC addresses within a local network, making it unrelated to the configuration of a firewall's IP address during reconfiguration.

DNS (Domain Name System) is responsible for translating domain names into IP addresses, but it does not assign IP addresses to devices; it merely resolves names to facilitate ease of access to internet resources.

HTTP (Hypertext Transfer Protocol