Which of the following server roles would MOST likely be found in a PXE boot environment?

A web server might serve larger installation files but isn't strictly part of the initial PXE boot process itself, which relies on TFTP for initial files. C: A proxy server is not directly involved in the PXE boot process, which focuses on network booting and initial OS loading. D: DCCP (Datagram Congestion Control Protocol) is a transport layer protocol and not a server role found in a PXE boot environment.

While DHCP and TFTP servers are fundamental for PXE booting, a DNS server is almost always present in enterprise environments to resolve hostnames. This includes resolving the TFTP server's hostname or the hostnames of other network services (like HTTP/HTTPS for package repositories) that are often used in conjunction with PXE for complete operating system installations.