If I choose during the install of CD: comodo secure dns only with CD
-and I have an another secure dns server-which server will used?
Who will the winner?
The another dns server settings can be found in Control Panel network connection-TCP/IP properities.
So, these are system-wide settings.
Comodo Secure DNS (For Dragon only) will override the systems default DNS settings if selected during install for Dragon only.
Note: ‘Malware domain filtering (Comodo Secure DNS)’ can be enabled/disabled (For Dragon only) after install, found under ‘Privacy’ in the advanced settings.