Q: 6
Which of the following utilizes TCP ports 20/21 and transfers data in cleartext?
Options
Discussion
C tbh. Telnet is cleartext too but only uses port 23, not 20/21, so those numbers point to FTP every time.
Probably C, FTP is the only one listed using both ports and sending cleartext. B is just port 22.
Not C, B
Yeah, that's C for FTP. Ports 20 and 21 with no encryption fits only FTP here.
Had something like this in a mock, and C, FTP, used both ports 20 and 21 with no encryption. Others (SSH, Telnet) have different port numbers. Think C is right, but open to being corrected.
The only protocol listed here that actually uses TCP ports 20 and 21 is C, FTP. SNMP is UDP based, SSH runs on port 22, and Telnet uses port 23. FTP also sends all data as cleartext by default. Pretty sure that's what they're looking for, but let me know if anyone sees it differently.
B or D. SSH and Telnet are both used for remote access, and I've seen practice exams mix them up before. Might be worth double-checking the official study guide just to be sure.
Option C
TCP ports 20 and 21 are classic FTP. Saw a similar question on a practice exam, answer was C.
Pretty sure it's C, FTP. Only one using both 20 and 21 in cleartext, right?
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