200-301 · Question #1454
Which is a fact related to FTP?
The correct answer is A. It uses two separate connections for control and data traffic.. FTP utilizes two distinct TCP connections: one for control commands and another for the actual data transfer.
Question
Options
- AIt uses two separate connections for control and data traffic.
- BIt uses block numbers to identify and mitigate data-transfer errors.
- CIt always operates without user authentication.
- DIt relies on the well-known UDP port 69.
How the community answered
(35 responses)- A91% (32)
- C3% (1)
- D6% (2)
Why each option
FTP utilizes two distinct TCP connections: one for control commands and another for the actual data transfer.
File Transfer Protocol (FTP) establishes a control connection on port 21 for commands (e.g., login, cd, get) and a separate data connection (typically on port 20 or an ephemeral port) for transferring the files themselves.
The use of block numbers to identify and mitigate data-transfer errors is a characteristic more commonly associated with TFTP (Trivial File Transfer Protocol), not FTP.
FTP typically requires user authentication (username and password) to access files, though anonymous FTP is a specific configuration that allows access without a user account.
UDP port 69 is the well-known port for TFTP (Trivial File Transfer Protocol), not FTP; FTP uses TCP ports 21 (control) and 20 (data).
Concept tested: FTP protocol characteristics
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp/configuration/xe-16/iap-xe-16-book/iap-xe-16-ftp-client.html
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