Which application within TCP/IP is used to send and receive files?

The chosen answer, File Transfer Protocol (FTP), is indeed the correct application for sending and receiving files within the TCP/IP suite. FTP is specifically designed for transferring files over a network and provides mechanisms for both uploading and downloading files efficiently. It operates on a client-server model and allows for various commands to manage files and perform operations like directory listing, file deletion, and renaming.

In contrast, the other options serve different purposes. The Trivial File Transfer Protocol (TFTP) is a simpler version of FTP, mainly used for transferring files without the complex features of FTP, such as authentication and directory listing capabilities. It's more suitable for situations where minimal overhead is desired, like transferring firmware or boot files.

Simple Mail Transfer Protocol (SMTP) is used for sending and routing emails, not for file transfers. While emails can include file attachments, SMTP's primary function is email transmission rather than direct file transfer.

HyperText Transfer Protocol (HTTP) is the foundation of data communication on the World Wide Web. It is mainly used for transferring web pages and associated resources, rather than for general file transfers in the way that FTP does.

Thus, FTP stands out as the robust and comprehensive solution dedicated to file transfers within the TCP/IP framework.