There is a TCP/IP protocol that should be used only locally due to its lack of security. It can be used with thin clients booting from a network disk or as part of a preboot execution environment (PXE). It is connectionless and consumes very little memory, making it ideal for transmitting boot files or configuration data between PCs on a LAN. What kind of file transfer protocol is this?

The Trivial File Transfer Protocol (TFTP) is a connectionless protocol that is extremely simple. It has small overhead, which means it doesn't require much memory to run. This makes it ideal for remotely booting a thin client. It can be used to transfer boot files to devices that lack hard disks. Because it is insecure, it should not be used to transfer files across the Internet. The File Transfer Protocol (FTP) is more dependable than TFTP. The File Transfer Protocol Secure (FTPS) protocol is a secure variant of FTP. To send email messages, the Simple Mail Transfer Protocol (SMTP) is employed.