You are speaking to a group of high school students in a tec

You are speaking to a group of high school students in a technology workshop about network security. You are describing a protocol that uses public-key cryptography to authenticate between a local computer and a remote computer. Of the following, what security protocol are you describing?

A. FTP

B. HTML

C. SSH

D. TCP/IP

Solution

Answer ) A. FTP

FTP (File Transfer Protocol)

One of the earliest uses of the Internet, long before Web browsing came along, was transferring files between computers. The File Transfer Protocol (FTP) is used to connect to remote computers, list shared files, and either upload or download files between local and remote computers.

FTP runs over TCP, which provides a connection-oriented, guaranteed data-delivery service. FTP is a character-based command interface, although many FTP applications have graphical interfaces. FTP is still used for file transfer purposes, most commonly as a central FTP server with files available for download. Web browsers can make FTP requests to download programs from links selected on a Web page.