What option is used to ftp files to or from the ColdFusion server?

To use FTP, you need an "FTP client". This is a piece of software that enables you to initiate a transfer. Also, the destination computer needs to have an FTP server. This is a server that has been installed on the computer which allows FTP sites to be configured. IIS includes an FTP server. Once an FTP site has been configured, users with FTP clients can connect and transfer files to and from the server.

option will be used to ftp files to or from Coldfusion server

You need a FTP server installed on the server. After that you can interact with it by using the CFFTP tag.

If you already have an FTP account with a remote host, you can use the CFFTP tag to transfer files between your computer and your host right in your ColdFusion application.

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You may use cfftp tag to access, upload and list files inside a secure ftp server.