To avoid having to add a machine trust account to a PDC for each Windows client in the domain (using the useradd command), a directive can be used in the Samba configuration file. Select the option…

`name resolve order` defines the sequence in which Samba attempts to resolve NetBIOS names to IP addresses, which is unrelated to machine trust account creation.

`machine map` is not a standard Samba directive for automatically adding machine trust accounts; there is no direct equivalent or common usage for this purpose as described.

The `add machine script` parameter in `smb.conf` allows an administrator to define a script that Samba will execute when a new Windows client attempts to join the domain and register its machine account. This script typically handles the creation of the necessary trust account without requiring manual intervention for each client, streamlining domain integration.

A `logon script` is executed on the client machine upon user login and is used for client-side configuration, not server-side machine account provisioning.

`read only = no` sets a share to be writable, which has no bearing on the automatic creation of machine trust accounts for domain membership.