Which of the following will boot from a network-hosted ISO image at power on?

PXE (Preboot Execution Environment) is a client-server interface that enables a computer to boot directly from a network server. It typically involves a DHCP server providing network configuration and the location of a boot image, often an ISO file, which is then loaded via TFTP to initiate the operating system installation or startup.

FTP (File Transfer Protocol) is for transferring files but is not a boot protocol itself; it cannot directly initiate a network boot process.

iSCSI (Internet Small Computer System Interface) allows block-level access to storage over a network, making remote storage appear local, but it is not a protocol for initial network booting of an OS image.

NFS (Network File System) allows clients to access files over a network, but like FTP, it is not a boot protocol and cannot directly initiate booting from a network-hosted ISO image.