TOS

1. Short for Terms Of Service, TOS is a contract and/or agreement made between a company and the end-user using the product. If the user voids the agreement the user may be inflicted with penalties. For example, a user disobeying a TOS may be banned from the service. Like many companies Computer Hope's TOS is found through our legal section.
2. Short for Type Of Service, TOS is defined in RFC 1349, 2474, and 3168 and is a field found in IPv4 packets.
3. Short for Tape Operating System, TOS is a type of operating system that was developed by IBM and ran from a tape drive in early computers in the 1960's. With the many limitations of tape drives TOS was quickly replaced with the Disk Operating Systems still in use today.
4. Short for Teacher Over Shoulder, see our TOS definition for additional information.

Also see: DOS, Network definitions, Operating system definitions, POS, QoS