Exam 200-301 topic 1 question 1278 discussion

A is correct

A. It uses two separate connections for control and data traffic.

A. It uses two separate connections for control and data traffic. Explanation: The FTP protocol typically uses two separate connections: 1. **Control Connection:** This connection is used for sending commands from the client to the server and receiving responses. It is usually established on well-known port 21. 2. **Data Connection:** This connection is used for the actual transfer of data files. Depending on the mode (active or passive) and the specific implementation, the data connection can be established on a different port. Options B, C, and D are not accurate: - B. FTP does use a simple form of error checking, but it does not use block numbers in the same way that some other protocols (e.g., TFTP) do. - C. FTP typically requires user authentication, which involves providing a username and password to access files on the server. - D. FTP traditionally uses TCP for its connections, and the well-known port for FTP control is 21, not UDP port 69. UDP port 69 is associated with TFTP (Trivial File Transfer Protocol).