Final answer:
FTP and TFTP are the remote file-access protocols that do not offer encryption.
Step-by-step explanation:
The remote file-access protocols that do not offer encryption are FTP and TFTP. FTP (File Transfer Protocol) is an older protocol that does not encrypt data during transfer, making it vulnerable to interception. TFTP (Trivial File Transfer Protocol) also lacks encryption, making it less secure compared to other protocols.