Which of the following commands would you run to add your machine to an NT4 domain?

The `net rpc join` command is specifically designed for joining a Samba server to an NT4-style domain. The `-S` flag correctly specifies the name of the Primary Domain Controller (PDC), and `-U` is used to provide the username and password for authentication during the join process.

`net ads join` is for Active Directory domains, not NT4 domains, and `-s` is not the correct flag for the PDC name.

While `net rpc join` is correct, the `-s` flag is not the standard flag for specifying the PDC; `-S` (uppercase) is used instead.

`net ads join` is for Active Directory, not NT4, and the flags `-W` and `-n` are not correct for specifying the PDC and credentials in this manner.